Patent ID: 8786215
Filing Date: 2014-07-22
Classification: H02M,H05B,Y02B

Abstract:
1. A double-output high-efficiency LED light-modulating circuit, comprising: a single-stage flyback power factor corrector, being coupled to an AC input voltage signal and capable of outputting a first LED voltage and a second LED voltage, so as to complete a twin-bus output; wherein the first LED voltage is slightly larger than the second LED voltage; a DC/DC convertor, being coupled to the single-stage flyback power factor corrector for receiving the first LED voltage and the second LED voltage; an LED module, being coupled to the DC/DC convertor and the single-stage flyback power factor corrector; and a light-modulating switch, being coupled to the LED module and the single-stage flyback power factor corrector, so as to receive the first LED voltage and process a high-frequency light modulation and a low-frequency light modulation to the LED module.