Self-excited TRIAC dimming circuit
View Patent ↗A self-excited TRIAC dimming circuit applied in a panel light includes a dimming module and at least one conversion module, and a power factor controller (PFC) is installed in the dimming module, and the conversion module is a self-excited electronic isolation transformer, and the TRIAC PFC is integrated with the circuit structure of a self-excited electronic transformer to improve the overall circuit stability, so that the panel light complies with a high safety standard to enhance product applicability and competitiveness.
1. A self-excited TRIAC dimming circuit, consisting of a dimming module and at least one conversion module electrically coupled to the dimming module for receiving an input voltage, converting the input voltage into a driving voltage, and supplying the driving voltage to at least one LED to drive the LED to emit light, characterized in that the dimming module includes a power factor controller installed therein, and the conversion module is a self-excited electronic isolation transformer and has at least one output controller, and the conversion module is electrically coupled to the LED through the output controller, and the output controller is provided for modulating the driving voltage to stabilize the overall circuit output power,
wherein the output controller is a current limiting resistor for receiving the driving voltage to stabilize the current flowing into the LED,
wherein the dimming module and each of the at least one conversion module is connected via only one terminal respectively, the conversion module includes a plurality of self-excited electronic isolation transformers electrically coupled to the LED respectively through the current limiting resistor.