US Patent No. 10,172,205

DIMMING MODULE, DIMMING METHOD AND LIGHTING DEVICE


Patent No. 10,172,205
Issue Date January 01, 2019
Title Dimming Module, Dimming Method And Lighting Device
Inventorship Jhao-Cyuan Huang, New Taipei (TW)
Chien-Nan Yeh, Kaohsiung (TW)
Chun-Jong Chang, Hsinchu County (TW)
Ching-Piao Chen, Hsinchu County (TW)
Po-Shen Chen, Hsinchu (TW)
Assignee LEXTAR ELECTRONICS CORPORATION, Hsinchu (TW)

Claim of US Patent No. 10,172,205

1. A dimming module, comprising:a triggering circuit configured to control a trigger delay angle of an ac input voltage according to a dimming command, so as to output a first voltage signal correspondingly;
a control signal generating circuit configured to output a control voltage according to the first voltage signal;
a voltage converting circuit configured to output a dc operating voltage having an operating level according to the first voltage signal, and output the dc operating voltage to a lighting module, wherein the lighting module comprises a light-emitting diode;
a linear driving circuit, configured to drive the lighting module according to the control voltage; and
a rectifying circuit configured to rectify the first voltage signal, so as to output a second voltage signal;
wherein the control signal generating circuit is configured to receive the second voltage signal and output the control voltage according to the second voltage signal, and the control signal generating circuit comprises:
a first resistor, wherein a first terminal of the first resistor is configured to receive the second voltage signal;
a second resistor, wherein a first terminal of the second resistor is electrically coupled to a second terminal of the first resistor and a second terminal of the second resistor is electrically coupled to a around terminal; and
a first capacitor, wherein a first terminal of the first capacitor is electrically coupled to the first terminal of the second resistor, and a second terminal of the first capacitor is electrically coupled to the second terminal of the second resistor.