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Nowadays, the LED dimming power supply on the market has a thyristor dimming power supply and a 0-10V dimming power supply, and the main LED dimming method is mainly used for these two types. The following is a common introduction of LEDs. Light way.

1, thyristor dimming power supply

The thyristor dimming has been applied to the dimming mode of incandescent lamps and energy-saving lamps earlier, and is also the most widely used dimming method for LED dimming.

It works by cutting the waveform of the input voltage through the conduction angle to produce a tangential output voltage waveform. Applying the principle of tangential direction, the effective value of the output voltage can be reduced to reduce the power of the normal load (resistive load). The advantages of thyristor dimming are high work efficiency and stable performance.

2, 0-10V dimming power supply

The power supply design has a control chip. When the 0-10V dimmer is connected, the 0-10V voltage change is used to change the power supply output current and reduce the light. For example, when the 0-10V dimmer is modulated to 0V, the current drops to 0. The brightness of the light is also off (there is a switch function). When the 0-10V dimmer is turned up to 10V, the output current will also reach 100% of the power output, and the brightness will be 100%. (The output voltage is unchanged. of).

0-10V dimming principle: As explained above, only the dimmer is 1-10V: when the resistance dimmer is adjusted to 1V, the output current is also 10%, such as to 10V (adjust to large), the output current It will also reach 100% of the power output, and the brightness will also be 100%. (The output voltage is constant.) Remarks: 1-10V has no switching function, and the lamp cannot be turned off!