LED light source driving power supply

The utility model discloses a light emitting diode (LED) light source driving power supply. The power supply comprises an anti-surge protective circuit, an electromagnetic compatibility (EMC) filter circuit, a full-bridge rectifier circuit, a passive power factor correction circuit, a voltage reduci...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YUAN DONGPEI, QIN JINTING, XU JIANFENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION
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Beschreibung
Zusammenfassung:	The utility model discloses a light emitting diode (LED) light source driving power supply. The power supply comprises an anti-surge protective circuit, an electromagnetic compatibility (EMC) filter circuit, a full-bridge rectifier circuit, a passive power factor correction circuit, a voltage reducing and stabilizing circuit, a current acquisition circuit, a pulse width modulation (PWM) control circuit and a source drive circuit, wherein the anti-surge protective circuit, the EMC filter circuit, the full-bridge rectifier circuit and the passive power factor correction circuit are connected sequentially; the anti-surge protective circuit is connected with an AC220V power supply; one end of the voltage reducing and stabilizing circuit is connected with the passive power factor correction circuit, and the other end of the voltage reducing and stabilizing circuit is connected with the PWM control circuit; one end of the current acquisition circuit is connected with the passive power factor correction circuit, and