News

At the 2024 Hong Kong Smart Lighting Exhibition, held from April 6th to 9th, KSPOWER, made its first launch DALI dimming and 5 IN 1 + CCT dimmable driver, showcasing its complete dimming functions and the latest LED drivers. KSPOWER demonstrated a comprehensive 5 IN 1 multiple output + CCT Dimming line, with the MC series and MP series emerging as standout favorites. These series stand out by multiple channel with junction box and Class 2 Class P, output wattage can up to 384W, eliminating the need for larger volume. The MC series is an AC/DC constant voltage mode mulitple channel + CCT dimmable LED driver, while the MP series serves as a constant voltage 5 IN 1 dimmable led driver. Notably, MC with one dip knob from 0-9 represents the functions  selectability from single dimming and three-wire 2700K-6500K led. With computer programmable secure technology, the product offers protections against attacks on building lighting infrastructure, ensuring the highest level of security. Furthermore, MP series underwent improvements for volume and stability since 2023, and transitioning from plastic labelling to automatic laser engraving. The highlight of the DALI dimmable driver was KSPOWER's newest LED drivers: the MD series. The led driver offer the flexibility to select between constant voltage DALI + CCT dimming, ensuring stable performance and efficiency. Additionally, the MD series are encapsulated with a plastic housing certificated with IP67, ensuring durability and reliability even in challenging environments. On the other side, the MD series provides the option of DT6 and DT8 dimming color and temperature, simplifying the cable attachment and removal process while protecting the cable and the end piece. The exhibition proved to be a success for KSPOWER, providing a platform to engage with partners and users alike. As Smart Lighting Fair 2024 Spring close, KSPOWER remain committed to driving innovation in the lighting and building industry, poised to deliver reliable solutions that meet the evolving needs of customers worldwide.

Hong Kong International Lighting Fair (SpringEdition）    From April 6 to 9, at booth 3E-B02/04. KPOWER will participate in the 2024 Hong Kong International Lighting Fair as a smart lighting service provider. KSPOWER is constantly committed to technological innovation, only to create the highest quality dimmable power supply, LED Driver and high quality AC DC Class 2 power supplies. At this fair, KSPOWER will exhibit a variety of innovative and intelligent new products. KSPOWER's professional service team will meet you at booth 3E-B02/04 and will introduce KSPOWER intelligence to customers with professional technical knowledge and the greatest enthusiasm, and highlights of dimmable power supplies in terms of performance and technology. In-depth understanding of customer needs, designing the most suitable lighting solutions and providing high-quality KSPOWER dimming products for customers.2024香港国际春季灯饰展4月6-9日，展位3E-B02/04，KPOWER将作为智能照明服务商参加2024香港国际春季灯饰展，KSPOWER不断致力于技术创新，只为创造最优质的调光电源产品。此次春季灯饰展，KSPOWER将展出多款创新、智能的新产品，KSPOWER专业的服务团队与您相约展位3E-B02/04，将以专业的技术知识，以最大的热情为客户介绍KSPOWER智能调光电源在性能和技术方面的亮点。深入了解客户需求，为客户设计最合适的照明方案和提供优质的KSPOWER调光产品。

Triac dimming This method was developed in the 1970s and has been the most commonly used dimming technique for decades. It does this by changing the waveform turns on, thereby changing the amount of current or power flowing to the light. This common dimming method uses thyristor components to control the brightness of the light, and adjusts the light by controlling the on and off of the current. When the thyristor device is forward biased, current can pass through and the brightness of the light increases. When the thyristor device is reverse biased, the current cannot pass through and the brightness of the light decreases. The advantages of Triac dimming are large dimming range, good dimming effect, and high dimming stability. However, the disadvantages are also obvious. The thyristor destroys the waveform of the sine wave, thereby reducing the power factor and the conduction angle. The smaller the value, the worse the power factor. Non-sinusoidal waveforms increase the harmonic coefficient, which easily produces serious interference signals in the circuit. Phase dimming is prone to instability at low loads. For this reason, a bleeder resistor must be added, and the bleeder resistor must consume at least 1-2W power. In addition, when the ordinary thyristor dimming circuit is output to the LED driver power supply, the LC filter at the input end will cause the thyristor to oscillate, which will produce audio noise and flicker at the LED power supply end. 0-10V dimming 0-10V dimming technology is an analog signal dimming technology that changes the output current of the power supply by changing the voltage of 0-10V, thereby adjusting the brightness of the light. This technology has a wide range of applications, including home lighting, stage lighting and commercial lighting, as it allows for easy and precise control of lighting and infinitely adjustable loads. Its application is mainly aimed at the control of a single loop, and cannot independently control a certain light in the loop. The advantages of this technology are simple dimming application, high precision, good compatibility, and high cost performance. The disadvantage is that it is necessary to add signal lines. If the signal lines are too long, there will be a voltage drop, and it cannot be addressed in the dimming system. Convenient for centralized management. There are two standards for 0/1-10V dimming, which are incompatible with each other. The difference is the control voltage: generating or carrying the control voltage. In other words, the 0-10V control type is a "current sink" or "current source". These standards are: (1) IES Standard 60929 Appendix E The standard uses "current sinks", originally used for dimmable fluorescent tubes, but more recently for LED transformers. "Current sinking" is when the controlled device supplies voltage to the controller, but the controller reduces the voltage back to the fixture. In this standard, light reaches a maximum value at 10 V and a minimum value if the recovery voltage is below 1 V. (2) Standard ESTA E1.3 This standard is used to dim theater lighting. The controller supplies low voltage to the controlled device in "current source" control. The controlled device adjusts the lighting intensity according to the voltage, adjusting to maximum intensity at 10 V and to minimum intensity at 0 V. So there will be compatibility issues. If the dimmer sends a 5V signal, the result may not be 50% of the original luminous intensity, but 30% or even 80%. 0-10V vs 1-10V The 0-10V dimmer has a built-in on/off switch, but the 1-10V does not, so the light cannot be turned off completely. Connecting a 0-10V dimmer to a 1-10V transformer will cause problems such as light flickering, and the LED light will not turn off completely until the power is disconnected. Triac dimming vs 0/1-10V LED dimming Triac dimming and 0/1-10V dimming are two different technologies used to adjust LED brightness. They are often compared because both use low voltages to drive LEDs. The working principle of thyristor dimming is to quickly turn the power on and off, while the working principle of 0-10V dimming is to control the voltage of the LED, so thyristor dimming is more energy-saving than 0-10V dimming. This is because the thyristor does not stay on when dimmed, so it consumes less energy, while the 0/1-10V dimmer uses a resistor to adjust the current of the LED, so part of the current is lost to heat. If you are intersted in any phase / 0-10V dimmable driver, ac dc adapter or other led driver power supply item, welcome to visit our website or contact us by email <power07@szzhpower.com>.

DALI (Digital Addressable Lighting Interface) is a protocol for digital lighting control that allows reliable, scalable and flexible lighting networks to be connected and configured. DALI is currently the most widely used digital protocol. When talking about DALI control, in addition to DALI-2, DALI DT6 and DALI DT8 are often mentioned. But what do these definitions mean? What are their differences? DALI Device Type The DALI protocol is supported and promoted by the DALI Alliance (DiiA), a group of global lighting companies established to develop the market for DALI-based control solutions. The protocol was originally developed to allow digital control, configuration and interrogation of fluorescent lamp ballasts to replace simple one-way, broadcast-like 0/1-10V dimming applications. In the DALI protocol, basic broadcast options are available, and through simple configuration, each DALI device can be assigned an individual address, allowing digital control of individual devices. DALI is a two-way communication protocol. The DALI protocol has been expanded many times since its inception and now makes it possible to determine whether a light fixture is working properly and its luminous intensity level, with each new device being assigned a new unique number. The device type (DT) number is derived from the IEC 62386 standard. They are only used with control gear-specific requirements (Part 2xx). Note that input devices and application controllers do not have DT numbers. The following figure is the components of IEC 62386: When you need to distinguish the different commands required for different types of equipment, you need to add the DT number. The DT number is related to the IEC 62386 Part number as follows: [DT number]=[Part number]- 201 The most commonly used DT numbers are as follows: DT6 and DT8 are just abbreviations DT6 is the abbreviation of Device Type 6. DT6 refers to LED driving power supply. It is a DALI dimming LED driving power supply. It is mainly used in outdoor and indoor lighting control systems. The product forms include constant current and constant voltage LED driving power supply. Similarly, DT8 is the abbreviation of Device Type 8 (color control device), which refers to an LED driving power supply with dual outputs supporting adjustable color temperature lamps or an LED driving power supply with more outputs supporting RGB color-adjusting lamps. It only needs one DALI address to enable a multi-output power supply to achieve color temperature or color control. Sometimes DT8 is also incorrectly described as "DALI-8", but DALI-8 does not exist. DALI-2 is the only example of using DALI with digital extensions. What is the difference between DALI DT6 and DALI DT8? Each Device Type has a specific set of capabilities that do not overlap or conflict with each other. DT6 has a set of functions available for all LED drivers, while DT8 commands and functions only deal with color control. They have obvious differences in application scenarios, control methods and supported protocols: Application scenario: DALI DT6 is mainly used for single-channel dimming of ordinary LED lamps, while DALI DT8 is mainly used to support RGB color adjustment. Control method: DALI DT6 uses one address to adjust the brightness and color temperature of the light. If you want to adjust the color temperature, you need to use two addresses. Relatively speaking, DALI DT8 only needs one address to achieve adjustable color temperature and brightness adjustment, saving addresses and wiring. Supported protocols: DALI DT6 supports IEC62386-102 and IEC62386-207 protocols, while DALI DT8 supports IEC62386-102 and IEC62386-209 protocols. In addition, DALI DT8 is compatible with DALI DT6, and both types of lamps can be mounted on the same DALI bus at the same time. Overall, DALI DT6 and DT8 are important equipment types in the DALI lighting control system. DALI DT6 is suitable for single-channel dimming or dual-channel color temperature adjustment of ordinary LED lamps, while DALI DT8 is more suitable for LED lamps that support RGB color adjustment and white light adjustment. Both have their own characteristics, and the appropriate equipment type needs to be selected based on actual needs. KSPOWER is one professional power supply and led driver manufacturer, if you are also interested in Dali control dimming power supply, welcome let me know.

The 18650 battery cell stands out among many battery cell types with its precise standard size of 18650 mm and classic cylindrical appearance. This kind of battery core has been widely used in various electronic equipment due to its mature production technology and reliable performance. As a key component of new energy technology, 18650 batteries not only improve the overall efficiency of energy storage systems, but also promote the innovative development of industries such as portable electronic products and electric vehicles. Next, let us explore the characteristics of the 18650 battery cell and its application prospects in the ever-changing energy world. The 18650 cell is a widely used rechargeable cylindrical lithium-ion battery. The battery is named for its size characteristics, which are approximately 18 mm in diameter and 65 mm in length, with the "0" at the end indicating that it is cylindrical. 18650 battery cells are favored in many fields because of their high energy density, long life and stable discharge characteristics. Development History 1991: Sony commercializes the first lithium-ion battery, marking the beginning of the modern rechargeable battery era. 1996: Panasonic launched the first 18650 battery cell, which later became the mainstream of the lithium-ion battery market. 2006: Tesla Motors released its first electric car, the Roadster, which used a large-capacity battery pack composed of thousands of 18650 cells. 2010: Tesla launched the Model S, which used a battery pack composed of larger capacity 18650 cells to achieve a longer cruising range. 2013: It was announced that Panasonic and Tesla would cooperate to establish the Gigafactory, specializing in the production of 18650 battery cells to meet the needs of Tesla electric vehicles. 2015: Manufacturers such as LG Chem and Samsung SDI began to launch higher-capacity 18650 batteries, providing longer cruising range and higher energy density. 2017: It was announced that Tesla would cooperate with Panasonic to develop a larger capacity 21700 battery cell and use it for the first time in Model 3. 2018: Tesla announced that it would build its own Gigafactory in Shanghai, China, to produce 18650 battery cells and 21700 battery cells to meet market demand. 2020: With the rapid growth of the electric vehicle market and the popularity of renewable energy, 18650 cells continue to be widely used in electric vehicles, energy storage systems and portable electronic devices. 2021: Some battery manufacturers begin to launch 18650 batteries with higher capacity and higher energy density to meet growing demand and improve battery performance. Material system As the mainstream form of cylindrical lithium-ion batteries, 18650 batteries have a rich material system. The material system of lithium batteries mainly involves positive electrode materials, negative electrode materials, electrolytes and separators. The following are the material systems used in these major parts: Cathode material Lithium cobalt oxide (LiCoO2): A widely used material in early lithium-ion batteries, providing higher energy density, but higher cost and poor thermal stability. Lithium nickel manganese cobalt oxide (LiNiMnCoO2, referred to as NMC): balances energy density, cost and safety, and is widely used in electric vehicles and portable electronic devices. Lithium Nickel Cobalt Aluminum Oxide (LiNiCoAlO2, NCA for short): Provides high energy density and is often used in applications requiring high performance, such as certain models of electric vehicles. Lithium iron phosphorus (LiFePO4, referred to as LFP): It has good thermal stability and long life, but has relatively low energy density and is suitable for applications with high safety requirements. Lithium manganese oxide (LiMn2O4, referred to as LMO): has better power characteristics and thermal stability, but shorter cycle life. negative electrode material Graphite: The most commonly used negative electrode material, it is widely used because of its good stability and low cost. Hard Carbon: Has higher first-pass efficiency and better power characteristics than graphite and is often used in special applications. Lithium titanium oxide (Li4Ti5O12, referred to as LTO): Provides excellent cycle stability and safety, but has low energy density. Electrolyte It is composed of lithium salt (such as lithium hexafluorophosphate LiPF6) dissolved in one or more organic solvents (such as EC: ethyl carbonate, DEC: diethyl carbonate, DMC: dimethyl carbonate, etc.). diaphragm Mainly made of polyolefin materials, such as polypropylene (PP) and polyethylene (PE), they exist in multi-layer or single-layer forms to isolate the positive and negative electrodes while allowing lithium ions to pass through. These different material systems affect the performance of 18650 cells, including energy density, power density, cycle life, safety and cost. Different applications have different requirements for these parameters, so various factors need to be weighed when designing cells to meet specific needs. As technology develops, new materials and compounds are being researched to further improve the performance and safety of battery cells. Application areas electrical tools 18650 batteries are widely used in power tools, such as electric drills, electric screwdrivers, electric saws, etc. Its high energy density and high discharge power enable power tools to provide long-lasting use time and efficient working performance. portable electronic devices 18650 battery cells are widely used in portable electronic devices, such as laptops, tablets, mobile phone power banks, etc. Their relatively large capacity and rechargeable nature allow these devices to provide long-lasting use and can be recharged for use again. energy storage system With the rapid development of renewable energy, energy storage systems have become a key component. 18650 battery cells are widely used in energy storage systems to store electrical energy from renewable energy sources such as solar and wind energy for use during the day or during non-window periods. Consumer Electronics 18650 battery cells are also used in other consumer electronics products, such as handheld game consoles, electronic cigarettes, drones, etc. Their high energy density and rechargeable nature allow these products to provide long-lasting use and stable performance. Summarize: 18650 battery cells are still a type with a very high share in the lithium battery market, playing an important role in new energy vehicles and other emerging fields such as energy storage. As technology advances, it is foreseeable that 18650 battery cells will be further optimized and innovated in the future. As a typical classic cylindrical battery, it will not be eliminated by the market in a short time. However, higher energy density and longer cycle life are its main development directions. This will bring more durable power supply to areas such as portable electronic devices, power tools and electric vehicles, and promote the development of new energy fields. Zhenhuan electric mainly produce ac dc adapter, switching power supply, 18650 li-ion charger and battery charger for these consumer applications. If you are interested in any item, welcome to contact me at email <power15@szzhpower.com>.

KSPOWER smart dimming power supply is suitable of an intelligent lighting system that can control the brightness and color of lights through a smartphone or remote control. It uses advanced LED dimming technology to achieve precise brightness adjustment and color temperature adjustment to meet lighting needs in different scenarios and needs. The system can also be integrated with other smart home devices to achieve a more intelligent home control experience. 1. What is LED intelligent dimming system? LED intelligent dimming system is a lighting system that uses intelligent technology to control the brightness of LED lights. As an emerging technology in the lighting industry, LED lamps have the advantages of high efficiency, energy saving, environmental protection and long life. The LED intelligent dimming system combines intelligent control equipment and software to enable users to adjust light brightness and color temperature as needed to meet the lighting needs of different scenes and personal preferences. 2. Advantages and disadvantages of LED intelligent dimming system 2.1 Advantages 2.1.1 Energy saving and environmental protection: LED lamps themselves have the characteristics of high efficiency and energy saving, and the LED intelligent dimming system can further reduce energy consumption. By adjusting the brightness of LED lights, energy consumption can be flexibly controlled according to actual needs to achieve a more energy-saving and environmentally friendly lighting effect. 2.1.2 Comfort and personalization: The LED intelligent dimming system allows users to freely adjust the light brightness and color temperature according to different scenarios and needs. This allows users to create comfortable lighting environments suitable for different activities or situations and meet personalized needs. 2.1.3 Long life: LED lamps have a long service life, and the application of dimming function can further extend their life. Reducing the brightness of LED lights through dimming control can reduce the power consumption of the lamp, thereby extending its service life. 2.2 Disadvantages 2.2.1 Higher cost: Compared with traditional lighting systems, the equipment and controllers of LED intelligent dimming systems are more expensive. This is mainly due to the application of intelligent control technology and the high-performance characteristics of LED lamps themselves. 2.2.2 Dependence on external devices: LED intelligent dimming systems usually rely on smart devices, wireless networks or specialized controllers to adjust light brightness. This may increase the complexity of installation and maintenance, and impose certain requirements on the stability and reliability of the system. 3. LED intelligent dimming system method 3.1 Manual dimming: The LED intelligent dimming system can adjust the brightness through manual controllers, switches or touch screens and other devices. Users can manually adjust the light brightness as needed to adapt to different lighting needs. 3.2 Automatic dimming: The LED intelligent dimming system also supports automatic dimming function. It senses the light intensity and activity of the surrounding environment through sensors and automatically adjusts the brightness of the light. For example, during the day or in an environment with sufficient light, the system can automatically reduce the light brightness to save energy. 3.3 Intelligent dimming: The LED intelligent dimming system can also control the light brightness in an intelligent way. With the help of technologies such as smart devices, mobile applications or voice control, users can remotely control and manage the brightness of LED lights to achieve personalized and convenient lighting control. KSPOWER Smart Dimmable LED Driver can accept 5 IN 1 Dimming, 4 IN 1 Dimming(0/1-10V), Triac/Phase Dimming and Bluetooth control mirror heating functions for choose. And The features compact ultra-thin size, slim led power supplies with detachable junction box for different lighting scenarios.

Dear Our Valued Customers and Partners, We would like to take this opportunity to extend our warmest greetings and best wishes for the upcoming New Year. We sincerely appreciate your continued support and patronage. We are happy to inform you that Shenzhenshi Zhenhuan Electronic Co., Ltd will be observing Chinese New Year holiday periods as follows: [Chinese New Year Holiday Period] From February 2nd, 2024 (Friday) to February 18th, 2024 (Sunday) We will resume regular business productions from February 19th, 2024 (Monday). During Chinese New Year holiday periods, any inquiries received will be responded on time; order shipment will be starting from February 19th, 2024 (Monday). We will continue our efforts to develop and provide led driver, battery charger, ac dc adapter, power supplies and services that meet your expectations. All of our employees are dedicated to this goal, and we look forward to receive closer relationships and stronger success together in 2024. Thank you once again, and we wish you all a joyful holiday season and a prosperous New Year.

Basics of Power Factor and Efficiency Engineers working with external power supplies (EPS) are no stranger to efficiency measurements. However, since their applications typically operate on DC power supplies, common mistakes can be made when measuring power on the AC side of the power supply. These common pitfalls include incorrectly measuring or completely ignoring power factor when calculating power input power, resulting in incorrect efficiency measurements. Let's review the basics of power factor and efficiency and then provide guidance on how to include power factor when measuring AC. DC power efficiency. Power Factor and Efficiency, a Review Efficiency (η) is the ratio of output power to input power: Equation 1: Efficiency In the context of an External Power Supply (EPS) dealing with direct current, the output power is calculated by simply multiplying the output voltage by the output current by quickly providing the numerator to equation. Calculating Output Power Calculating the output power of an EPS, which is dc, is simply the output voltage multiplied by the output current: Equation 2: Output Power Equation 2 calculates the direct current (dc) output power (P_dc) of an Electric Power Supply (EPS) by multiplying the output voltage (V_dc) by the output current (I_dc), resulting in the power measured in watts (W). Understanding Power Factor A common mistake is to apply this same calculation to obtain the input power. This presents a problem because the volt-ampere product in ac circuits does not always equal the real power, and in fact, in the case of external adapters, the volt-ampere product will never equal the real power. In ac circuits, the volt-ampere product is equal to the apparent power (S), which is related to the real pow-er through a term called Power Factor (PF): Equation 3: Apparent Power Equation 3 computes the apparent power (S) in volt-amperes (VA) by multiplying the root mean square (rms) voltage (Vrms) with the rms current (Irms). Defining Power Factor By definition, power factor is the ratio of real power to apparent power, where apparent power is the product of the rms voltage and rms current. Only when the power factor equals 1 does the volt-ampere product equal the real power: Equation 4: Power Factor Measuring Power Factor The best way to measure power factor is to use a power meter like the one shown in Figure 1 below. These devices will output the real power directly, so power factor does not need to be considered when calculating efficiency. In addition to the real power, these meters can measure power factor, THD, the current for each harmonic, and more. While low power external adapters do not have de-fined power factor or harmonic limits, higher power supplies do have specific regulatory limits on the harmonic content and power factor. Standards, such as EN 61000-3-2 specify limits on harmonic current up to and including the 39th harmonic, for certain power levels. When measuring the harmonic current of a power supply, a power meter is essential. Figure 1: WT210 Power Meter showing measurements corresponding to waveforms Power Factor in Power Supplies You may think that the impact of omitting the power factor will result in only a slight error and/or that the power factor of an external adapter cannot be that bad. In fact, without power factor correction, the power factor of an external adapter could easily be as low as 0.5 at a rated load. An adapter with a power factor of 0.5 will have an apparent power twice that of the real power, thus leading to incorrect results. Even if the power supply had a real efficiency of 100%, this measurement would only show 50%. In addition to the general inclusion of power factor in efficiency calculations, it is important to note that the power factor is line and load dependent. Efficiency requirements, such as DoE Level VI, require the efficiency to be measured at several points (25%, 50%, 75%, and 100% load) at both high and low line voltages. If power factor is used in the calculation of real power, then it must be re-measured for each of these conditions. Power Meters for Accurate Efficiency Testing Decades of increasing regulation have made efficiency testing one of the most important factors in selecting and qualifying power supplies. Lack of experience in dealing with ac circuits can lead test engineers to omit or to incorrectly calculate the power factor, resulting in incorrect efficiency numbers. When testing external adapters, or any ac-dc power supply, the best method for calculating the real power input is through the use of a power meter. These devices not only measure real power directly but can measure the current associated with the individual harmonics and provide a complete picture of the power supply input. Power factor is on the list of concerns for designers of virtually every device that draws significant power from a mains socket, as well as for engineers in heavy-electrical sectors. The power factor target, based on legislation, plus efficiency, component cost, and volume/board space need to be considered. KSPOWER has designed active power factor correction into the vast majority of its ac-dc power supplies rated at 105 W and above to help ease implementation and ensure compliance for OEMs.

H Series Dimmable and Non Dimmable LED Driver is a [go-to" LED driver for contractors and integrators for a lot of good reasons. This Class 2 rated single-channel driver ranges from 40 watts to 320 watts and has a universal input voltage range from 120VAC to 277VAC, eliminating the need to stock both 120VAC and 277VAC drivers. Another contractor-favorite feature is the series works with 12, 24, 36 or 48VDC so it accommodates a wide variety of fixtures such as tape lighting, linear lights, floodlights and spotlights. Rusty specs in HP series exclusively on certain projects because of its versatility, reliability and unbeatable dimming. The dimming to be extremely predictable, smooth and stable at all output levels. Many customers use it as the preferred driver for all tape lighting applications. The HP / HO / HT power supplies is a dimmable LED driver down to 1% with 0-10V MLV and ELV Dimming. It`s also a great feature that the driver works with forward and reverse phase fixtures. This five-in-one driver is able to work in forward phase in MLV dimmers and reverse-phase in ELV dimmers. The power supply allows for well-regulated, ultra-clean output voltage that is flicker-free and provides constant lumen quality lighting output.

. Classification of LED driver power supply 1. According to the driving mode, it is divided into constant current type and constant voltage led driver 1) Constant current type: The characteristic of the constant current type circuit is that the output current is constant, and the output voltage changes with the change of the load resistance. The constant current type power supply to drive the LED is an ideal solution and is not afraid of the load short circuit, and the LED brightness is consistent. Disadvantages: The cost is expensive, the load is completely open-circuited, and the number of LEDs should not be too many, because the power supply has a maximum withstand current and voltage. 2) Constant voltage type: The characteristic of constant voltage driving circuit is that the output voltage is constant, the output current changes with the change of the load resistance, and the voltage will not be very high. Disadvantages: It is forbidden to completely short-circuit the load, and voltage fluctuations will affect the brightness of the LED. 2. According to the circuit structure, it is divided into capacitor step-down, transformer step-down, resistor step-down, RCC step-down, PWM control type 1) Capacitive step-down: The LED power supply adopting the capacitive step-down method is easily affected by the fluctuation of the grid voltage, the impact current is too large, and the power supply efficiency is low, but the structure is simple 2) Transformer step-down: This method has low conversion efficiency, low reliability, and heavy transformer 3) Resistive step-down: This method is similar to the capacitive step-down method, except that the resistor needs to consume more power, so the power supply efficiency is relatively low; 4) RCC step-down type: This method is more widely used, not only because of its wide voltage regulation range, but also its power utilization efficiency can reach more than 70%, but its load voltage ripple is relatively large; 5) PWM control type: I have to mention the use of PWM, because for now, the LED power supply designed by PWM control method is ideal. The output voltage or current of this LED driving power supply is very stable, and the power conversion The efficiency can also reach 80%, or even more than 90%. It is worth noting that this power supply can also be equipped with multiple protection circuits. 3. According to whether the input and output are isolated, it can be divided into isolated and non-isolated 1) Isolation type: Isolation is to isolate the input and output through the transformer for safety. Common topologies include forward, flyback, half-bridge, full-bridge, and push-pull. Forward and flyback topologies are mostly used in low-power applications, with few devices and simple operation. Among them, the flyback has a wide input voltage range and is often combined with PFC. Its more widely used is the flyback isolation drive. 2) Non-isolated: Isolated drivers are generally powered by batteries, storage batteries, and regulated power supplies, and are mainly used for portable electronic products, miner's lamps, automobiles, and other electrical equipment . The importance of LED driver Itt is difficult to supply LEDs with normal power due to the steep forward volt-ampere characteristics of LEDs. so It cannot be directly powered by a voltage source like an ordinary incandescent lamp, otherwise the voltage fluctuation will increase slightly, and the current will increase to the extent that the LED will be burned. In order to stabilize the working current of the LED and ensure the normal and reliable operation of the LED, various LED drive circuits with "ballast function" have emerged as the times require. The simplest is to connect a ballast resistor in series, while the more complicated one is a "constant current driver" composed of many electronic components. ZHENHUAN is one constant voltage power supply manufacturer, if you are interested in any item, welcome to contact me at Email < power07@szzhpower.com> and Wechat <18948752180>.

ZHENHUAN is pleased to announce the launch of its latest dimmable LED drivers HMP/HMO/HMT – with their multi-channel and compatibility, these series of LED drivers offer revolutionary solutions for creative lighting applications. HMP is a 5-in-1 dimming LED driver compatible with Triac/0-10V/1-10V/10V PWM/potentiometer; HMO is a 4-in-1 dimming LED driver compatible with 0-10V/1-10V/10V PWM/potentiometer Dimmable LED driver; HMT is a compatible triac/phase, MLV, ELV dimming LED driver. HMP/HMO/HMT is the most advanced 12V/24V/36V/48V output constant voltage LED driver with power range from 180W to 384W, supports 2/3/4/5 channels, and is compatible with a variety of standard brand dimmer switches. These features offer designers, architects and lighting professionals endless possibilities for creating captivating lighting installations. HMP/HMT/HMO series adopt constant power design, which is convenient for customers to use under different output currents. To prevent defect issues caused by abnormal temperatures, KSPOWER complies with UL cUL Class 2 Class P TYPE HL SELV listed indoor and outdoor LED strips, linear, recessed lights, high density and COB for safe environmental protection. Additionally, these series feature a low-profile metallic aluminum housing, the compact size allows for a variety of mounting options, and come with a 5/7 year warranty. The newly added power supplies that comply with Triac/0-10V/1-10V PWM dimming standards include the full series of 180/192/288/300/384W; providing wide universal AC input 100-277V 50/60Hz. Additionally, the outdoor IP65/IP67/NEMA 3R rating comes with corrosion-resistant stainless steel screws. Main features Widely compatible with various LED light strips ensuring maximum flexibility in lighting design. 5-way smooth dimming performance enables seamless control, allowing users to easily achieve their desired ambience. Overload protection ≤120% hiccup mode enhances durability and reliability, making it a suitable choice for both small and large projects. Low operating temperature P-class LED driver, up to 90° C. Large junction box with pre-installed connectors for easy, safe installation. Outdoor-rated enclosure for dry, wet, and humid environments, meets UL Class 2 Class P standards and complies with FCC standards.

At this Hong Kong Lighting Fair, KSPOWER will exhibit a series of highly competitive smart dimming products, allowing customers to debug the products at close range and experience the application effects. It also supports smart lighting linkage in home spaces, giving you a real experience. The charm of KSPOWER intelligent dimmable led drivers! On the 2023 Hong Kong Spring lighting exhibition, we proudly launched PUT and PUN ultra slim phase dimmable and non-dimmable led driver and our brand "KSPOWER" has also begun known to LED lighting manufacturers, wholesalers, retailers and outdoor equipment customers. At this Hong Kong Autumn Lighting Exhibition, KSPOWER will be launched our latest Smart Dimmable Power Supply by bluetooth + touch + remote control LED solutions, and 2/3/4 Channel.Multiple Output Cabinet Light Led Driver, welcome to visit and experience!. Our brand KSPOWER concept is always concentrate on doing one thing well and strives to provide customers with a competitive and reliable power supplies. Date: October 27-30, 2023 Booth: 3E-D19 (Hong Kong Convention And Exhibition Centre) KSPOWER invites you to meet at the Hong Kong Convention and Exhibition Center, see you there!

Dear all customers and friends: The Mid-Autumn Festival and National Day Holiday in 2023 are coming soon. Based on the actual production situation and order demand, KSPOWER' holiday time as follows: All employees will have a five-day holiday from September 29, 2023 (Mid-Autumn Festival) to October 3, 2023, and will start working on October 4, 2023 (Wednesday). During the holidays, the KSPOWER's business representatives keep their mobile phones/emails < power15@szzhpower.com > open 24 hours. If you have any needs for KSPOWER® power supplies, please feel free to contact us at any time. KSPOWER wish all customers and friends enjoy a happy Mid-Autumn Festival and National Day! Zhenhuan is one high quality led driver, power supply and battery charger manufacturer, our products of power range from output 4.2W to 384W (output voltage 4.2V to 48V, output current 0.2A to 20A) a total of 1000 kinds of models and come with safety regulation standards: IEC/EN 62368, IEC/EN 61558, IEC/EN 61347, UL/cUL 62368, UL/cUL 8750, UL/cUL1310 CLASS 2 and in full compliance with UL/cUL ETL/cETL RU/cRU CE ROHS SAA C-TICK KC KCC GS TUV FCC CB NOM CCC PSE CB certifications for global markets.

In order to enrich the cultural life of employees, further enhance the team spirit, improve the cohesion and centripetal force of "KSPOWER", and face life and work with a fuller spirit and a more positive attitude. On August 26-27, 2023, Zhenhuan organized a 2-day, 1-night Yangjiang Hailing Island-themed team building and expansion activity of "working together to create success together". Pick up the luggage, get on the bus, and the journey of the friends begins! The drive of about 4 hours is long, but on the road with a happy mood, talking and laughing with colleagues, the destination is not far away. As one high quality power supplies manufacturer, Zhenhuan always insist on one principle is "concentrate on doing one thing well and provides customers with a competitive and reliable AC DC Adapter and LED Driver". Don't hit the ground, Never give up! After a simple warm-up exercise, under the leadership of the coach, we learned the skills of receiving and passing the Frisbee, the key points of offense and defense, the rules of the game, etc., and practiced and competed in groups. After the frisbee competition officially started, the atmosphere on the scene quickly heated up. Following the coach's order, the two teams quickly plunged into the fierce competition. We enhanced understanding, established tacit understanding, and released pressure through running and communicating again and again. Although the sun is warm, it can't stop us from having fun. Keep the disc on the ground, never give up, the ultimate meaning of the Frisbee spirit: extraordinary sports, extraordinary experience. Having fun is more competitive, and valuing the team is more frisbee spirit. Record happy moments~

More than a hundred years ago, Edison invented the electric light, which brightened the human world. But with the continuous progress and development of lighting equipment, pure light can no longer meet people's needs, especially in hotel engineering lighting, smart home lighting, commercial lighting, outdoor lighting and so on. Different lighting environments can create different atmospheres and achieve energy saving and environmental protection effects. Therefore, the dimming power supply has brought great benefits to people's life. 1. Dimming the power switch is a gradual process of light change Usually, in areas without a dimming system, when the lights are turned on, they suddenly become fully bright; when they are turned off, they suddenly become completely dark, and the overall lighting effect is very hard; while in areas equipped with dimming systems, when the lights are turned on, the lights gradually turn from dark to bright ; When the light is turned off, the light will gradually dim from bright to avoid sudden changes in light brightness from irritating the eyes, which can not only protect the eyes, but also bring us a comfortable visual experience. 2. Dimming to achieve energy saving Lights are artificial lighting that provide enough light at night or in situations where natural light is insufficient. But lights consume electricity, and turning off lights when not needed saves energy. And in some periods of time to supplement the lack of natural light, adjust the light to a certain brightness, such as adjusting the light brightness to 20%~50%, can also greatly reduce power consumption by 50%~75%. In many public places or buildings, such as airports, parking lots, streets, schools, shopping malls, etc., it is not advisable to turn off all the lights at night, but proper lighting can be maintained, which not only facilitates the convenience and safety of people working or traveling at night, but also can Maximum energy saving. 3. Good light environment Some high-end places or specific places have high requirements for lighting. Taking hotel lighting as an example, it is not only necessary to reflect the high-end taste of the hotel, but also to strengthen its own image. Through dimming control, adjust light and shade, color temperature, color, etc. to form different lighting scenes and construct different atmospheres to meet various needs of customers for reading, meeting, sleeping, waking up at night, etc., and bring comfortable visual experience and satisfaction to customers stay experience. 4. Light pollution The light pollution caused by some excessively strong or flickering lighting is actually very harmful to the human eye, causing the pupils to constrict, which can easily cause a series of negative effects such as eye fatigue, vision loss, and headaches. The light of the dimming power supply is gradually changing, slowly lighting up, slowly dimming, and the light is soft, making people more comfortable for the eyes. KSPOWER is one high quality external power supply manufacturer, and our products of power range from output 4.2W to 384W (output voltage 4.2V to 48V, output current 0.2A to 20A) a total of 1000 kinds of models power adaptor and led transformer. And mostly of ac dc adapters is come with safety regulation standards: IEC/EN 62368, IEC/EN 61558, IEC/EN 61347, UL/cUL 62368, UL/cUL 8750, UL/cUL1310 CLASS 2 and in full compliance with UL/cUL ETL/cETL RU/cRU CE ROHS SAA C-TICK KC KCC GS TUV FCC CB NOM CCC PSE CB certifications for global markets.

KSPOWER's KS72DU-xxxyyyy series (output wattage range from 66W to 75W) desktop power supply won its reputation until today, such as the most popular of models: 12 volt dc power supply 6a (12V6A), 24v ac dc adapter 3a (24V3A), 15v charger adaptor 5a (15V5A), 36v led driver power supply (36V2A) and 18v power internet adapter (18V4A) etc. To provide customer with high quality and competitive indoor power supplies, this series external power adapter changed to the latest compact size and fully enclosed PC plastic casing, safe to use, high temperature resistant, fire retardant material, more environment-protection, lowering the lead time and cost for end ITE, Audio/Video, LED and home applications. The ac dc adapter features universal AC input 100-240V 50/60Hz and output voltage range from 4.2V to 48V DC; constant voltage plastic case solution; meets level VI energy efficiency and 3 years warranty. The cost for new version case will be absorb by power supply manufacturer - KSPOWER, price remains same. There will be a transaction period between old and new version. If need the latest version dimension drawing or other information, please contact KSPOWER sales representative for further details.

Dear valued customers, colleagues and friends: On the occasion of the May 1st Labor Day, according to the regulations of the national statutory holidays and combined with the actual production situation of ZHENHUAN, the May 1st Labor Day holiday time of ZHENHUAN is hereby notified as follows: Holiday time: April 29 (Saturday) - May 3 (Wednesday) The person in charge of each department is requested to do a good job in the pre-holiday work arrangement and inspection work of the department, tidy up the 7S in the office and workshop site, close the switch (power supply of instruments and equipment), lock the doors and windows, do a good job in fire prevention and anti-theft work, and ensure the office space safe and orderly. During the holidays, please colleagues go out to play and pay attention to personal and property safety, and have a safe, happy and meaningful holiday! During the holiday, all business representatives of KSPOWER® keep their mobile phones open 24 hours a day. If you have any questions or needs for ac dc adapter power supplies, you can contact us at any time. All the staff of ZHENHUAN wish all new & old customers and friends a happy holiday!

KSPOWER, the standard power supplies manufacturer, based on reasonable cost and high efficiency, has designed and launched its new generation of ultra-slim power supplies, the PUT and PUN series. These series provides 4 output voltage models, including low-voltage SELV-compliant 24Volt/ 12Volt and 36Volt/ 48Volt, and make the output wattage from 20W-60W, which can be used in a wide variety of for Kitchen Cabinet,Counter,Shelf,TV Back,Showcase 2700K Warm White,Bright 1500lm, LED lighting and energy systems' equipment. KSPOWER's new series LED drivers follows the ultra-slim and high PFC design, and increases the PUT(Triac/phase-cut dimmable) or PUN(Non-dimmable) series for choose.These series features class II/2 (plastic housing) and insulated design, with SELV and isolated circuit design, the two series can be a safer indoor LED driver. The wider adjustable input range and constant power design can reduce the number of output models (SKU) and matching design problems, improving the efficiency of stocking units. In addition to the before mentioned features and applications, KEYSUN TECH has also applied for UL8750 and EN61347 certification for the full SLD-50/80/150 series, providing customers with lighting solutions for LED appliances, accelerating product certification and mass production.

A UL listed adapter is an AC adaptor that meets the safety standards outlined by the Underwriters Laboratories (UL). This is an organization that provides safety power supply certification for a wide variety of products include electrical devices, electronic equipment, building products, medical equipment, processed foods, water heaters and fire protection products. These universal ac to dc adapter are subjected to stringent testing and evaluation to ensure they meet UL`s criteria for performance and safety. With a UL/cUL listed adapter, you can be sure that the universal plug in class 2 transformer has been thoroughly evaluated and meets industry standards for electrical safety. These class 2 power transformer provide an extra layer of safety for customers who rely on electrical products for their everyday needs. When class 2 power supply adapter is UL/cUL Listed, that means that the UL has tested the device, and it meets their requirements for safety (fire or shock hazard). Because of this it is highly recommended that all of your electrical products carry the UL seal so that you can ensure the customers safety and satisfaction with your class 2 power supply 120vac 60hz. When your power adapter is UL Listed, it means it meets the standards for safety required. KEYSUN`s all indoor power adapter charger and outdoor power supplies is UL cUL ETL cETL RU cRU FCC certified to provides customers with this advantage to save large amounts of money on certification charge and reduce the complicated certificate programs for the end applications. There are different safety standards for different power supply and the applications: UL/cUL 62368-1 (60950 + 60065) listed for use in I.T.E and Video/Audio equipment; UL/cUL 1310 listed for use in Class 2 power units; UL / cUL 8750 listed and recognized for use in safety light emitting diode equipment and class 2 power supply for led lighting. KSPOWER® mainly produce UL listed AC-DC Power supplies, battery charger, class 2 power unit for led lights, metal box led driver and dimmable led driver in Shenzhen. If you are interested in any UL listed power supplies, welcome to contact us by email <power15@szzhpower.com>.

The Hong Kong international Lighting Fair 2023(Spring Edition), which has been suspended for 3 years and returned to the exhibition, will be grandly opened at Convention And Exhibition Centre in Hong Kong, China. After 3 years of re-appearance in HongKong, Zhenhuan's booth is located in Hall 1, Booth No. C35, this exhibition, Zhenhuan for international audiences to bring a number of previously released new products and hot products, including H series, L series, N Sreies, E Series, 5 in 1 dimmable led driver, Triac, PWM, 0/1-10V dimming and Class 2 power supply series. The intelligent dimmable LED driver exhibited in this exhibition is characterized by flicker-free, high power factor and high efficiency,which supports multiple dimming methods, compatible with almost all brands of dimmers on the market, and can realize the free adjustment of light and dark. In order to let the audience more intuitively experience the smooth dimming advantages of KSPOWER® dimmable LED driver, a product demonstration area will be set up on the spot for the audience can feel the eminent product innovation ability and professional business team style of Zhenhuan at zero distance. As the exhibition period approaches, Zhenhuan power supply sincerely invites you to visit the booth site to learn about more products and professional solutions, and is very much looking forward to witnessing more surprises with you!