Patent ID: 8120267

Claim:
A light emitting diode (LED) driving circuit, for receiving external AC power from an AC power source, converting the external AC power, and outputting a driving AC power to at least one LED, the LED driving circuit comprising: a bridge rectifier, for receiving said external AC power and outputting said driving AC power, and the bridge rectifier comprising: two rectifying input terminals, electrically coupled to the AC power source; a rectifying output terminal, for outputting the driving AC power, and one terminal of the LED being electrically coupled to the rectifying output terminal; and a rectifying ground terminal, for being electrically grounded; a high-bias-voltage diode, having one terminal electrically coupled to a balancing node and another terminal electrically coupled to the rectifying output terminal, and a forward bias direction of the high-bias-voltage diode being directed from the rectifying output terminal towards the balancing node; a balancing capacitor, having one terminal electrically coupled to the balancing node and another terminal being grounded; a driving chip, receiving operating power from the balancing node and outputting a driving signal; and a switch, having a first terminal point being electrically grounded and a second terminal point, receiving the driving signal to be set to on or set to off, and the other terminal of the LED being electrically coupled to the second terminal point.