Patent ID: 9591710
Date: 2017-03-07
CPC Classifications: H05B

Claim:
1. A kind of LED phase cut dimming power supply, comprises a AC power supply, a phase cut dimmer, a LED phase cut dimming power supply and, a LED lamp or a LED luminaire, wherein the AC power supply connects to the input terminal of the phase cut dimmer; the output terminal of the phase cut dimmer connects to the input terminal of the LED phase cut dimming power supply; the output terminal of the LED phase cut dimming power supply connects to LED lamp or LED luminaire; the LED phase cut dimming power supply is composed of an anti-interference circuit, a rectifier circuit I, a switching power circuit, a rectifier circuit II, a dimmer holding current circuit, a decompression filter circuit, a DC signal amplification circuit, a signal conversion circuit, a photoelectric coupler, a pulse signal amplification circuit, a MOS tube, a power supply circuit VCC and a power supply circuit VDD, which correspond to each and connect with each other adaptively; the input terminal of the anti-interference circuit connects to the output terminal of the phase cut dimmer, and the MOS tube connects to the LED lamp or the LED luminaire.