LED driving circuit and lamp

The utility model is applicable to the electronic field and provides an LED driving circuit which comprises a DC power supply, a control driving unit and an LED lamp string. A first input end of the control driving unit is connected with the DC power supply, and an output end of the control driving...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	WEI QIULAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	The utility model is applicable to the electronic field and provides an LED driving circuit which comprises a DC power supply, a control driving unit and an LED lamp string. A first input end of the control driving unit is connected with the DC power supply, and an output end of the control driving unit is connected with an input end of the LED lamp string. The LED driving circuit also comprises a short-circuit protection circuit, an input end of the short-circuit protection circuit is connected with an output end of the LED lamp string, and an output end of the short-circuit protection circuit is connected with a control end of the control driving unit. The LED driving circuit is employed in the utility model, through the employment of the short-circuit protection circuit, when an output load is in short circuit, the control end voltage of a first switch element is raised instantly, the first switch element is conducted, a second switch element is stopped, the control end of the control driving unit is groun