What types of LED dimming power are there? With the development of the power industry, the use of LED lights is becoming more and more common. Many people now choose to use LED lights to illuminate, because the benefits of LED lights are really too much. For example, LED lights are more environmentally friendly and safe, with low thermal energy and high brightness, and long life and low power consumption. However, many people may not be clear about the LED dimming power supply. Today, Zhongfu will introduce the types of LED dimming power supplies for everyone.

    What types of LED dimming power supplies are there?

    1. LED pulse width dimming

    The secondary side uses PWM to control the effective value of the output current. The control mode is generally based on the DC constant voltage power supply plus a first-stage DC/DC converter capable of realizing fast current control, or the output of the constant current power supply. Add a first-stage PWM chopper switch to control the constant-current DC/DC converter or PWM chopper switch with a chopping frequency of several hundred Hz to 1 kHz, and the working time in a unit period, thereby obtaining different duty ratios. Wave output current.

    2. LED thyristor dimming power supply

    The thyristor dimming power supply is further divided into a constant voltage dimming mode and a constant current dimming mode. With active PFC calibration, EMC standard design, dimming linear smooth, no flash screen! Supports front phase dimming and post-phase dimming; compatible with powerful performance! The two-way thyristor standard matches the mainstream dimmers and lighting control systems at home and abroad!

    3.0/1-10V LED dimming power

    The 0/1-10V LED dimming power supply is also divided into two modes: constant voltage dimming mode and constant current dimming mode. Dimming range 0-100%; with active PFC correction, EMC standard design, dimming stepless jump, smooth light and dark effect! Seamless gap compatible with all 0-10V, 1-10V, 10VPWM dimmers and lighting control systems in the world.

    4. Simulated linear dimming

    The analog signal is used to control the output DC current of the power module. Generally, the reference current signal is used to change the reference of the LED driver steady current control loop to control the output DC current, thereby effectively controlling the brightness of the LED lamp.

    The control of the dimming mode is simple, and the main circuit structure of the original constant current driver does not need to be changed. The cost of the driver is low and the efficiency is high. When the LED is driven by the constant current source, the current decreases, and the LED conduction voltage is also reduced. High, but this dimming method requires an additional analog control signal source to provide dimming control. At the same time, since the current sensing threshold is generally set lower, its anti-interference ability is poor, and flickering occurs during dimming. .

    LED dimming power supply mainly has these four types, now everyone knows What types of LED dimming power supply! If there is related demand for LED waterproof power supply, please contact us.