Correct type dimmer for led lights full#

If the AC current of the load lags behind the AC voltage, the load is an inductive load, also known as a lagging load, which also means that when the voltage is 0, the current is still not 0.

The leading edge phase control works well on incandescent lamps and high-voltage halogen lamps, but it is not suitable for low-voltage halogen lamps, fluorescent lamps and LED lamps, and may even cause damage.ДЄpplied to the leading edge phase control of inductive loadsД«ecause the transformer of the low-voltage halogen lamp itself is an inductive load. The characteristic of the thyristor is that when the voltage sine wave passes through the 0V voltage level, it cuts off the current, and must be reactivated in each sine wave cycle before the voltage can restore the sine wave form. The wavy line supplies voltage to the lamp. After the set time, the thyristor is activated and the voltage returns to the correct sine wave. Under the action of the leading edge phase control, the voltage sine wave will maintain the voltage at 0V after passing the 0V voltage level. A device called Triac is used to provide this function.

Correct type dimmer for led lights full#

The sine wave is at 100% full load, and The 50% load when Yu Zhengxuanbo is cut halfway, the comparison between the two can be easily measured with a multimeter. The dimming of traditional lamps uses leading edge phase control technology, which technically means that a segment of the sine wave of the voltage supply is cut off, resulting in a decrease in the energy supply and the brightness of the lamp. Shortcomings of PWM dimming and solutions.

Advantages of Pulse Width Modulation Dimming (PWM).