What is the principle of led light, and what kind of modulation is commonly used?
Pulse Width Modulation (PWM) : digitizing the power source and controlling the air ratio of the square wave to achieve the goal of controlling the current. Constant current power control: using analog linear technology can easily adjust the size of the current. Group control: group an LED group with a simple packet control. Leds are used to control the constant current power supply.
Look from the figure, this was the thyristor adjustable light, but do not know why took a Power Supply, the normal LED SCR adjustable light no longer want this, whether can provide Powe Supply parameters. As for the silicon controlled dimmer principle, is to change the input energy (220 v sine wave cut off some), concrete can be baidu search data again, note that the driver is not compatible with all SCR silicon controlled rectifier dimmers, incompatible often at some point or a certain range can cause flash lamp
In this case, the DIM105 is just a silicon-controlled tuner, not a switch source; Power Supply, which does not have the ability to control silicon, only provides Power, and DIM105 USES DIM105. Most of the thyristor is integrated in Power Supply with DIM105
