Lamp and driving power supply and control circuit thereof

The utility model discloses a lamp and a driving power supply and a control circuit thereof, the control circuit is used for controlling an LED light source, and the control circuit comprises a dimming module used for generating a dimming control signal according to an external input signal; the vol...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DAI PING, YOON KYONG-SU, WANG ZONGYOU
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 STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a lamp and a driving power supply and a control circuit thereof, the control circuit is used for controlling an LED light source, and the control circuit comprises a dimming module used for generating a dimming control signal according to an external input signal; the voltage sampling module is used for sampling the output voltage to generate a voltage sampling signal; the compensation module is used for generating a compensation signal according to the voltage sampling signal when the dimming control signal is determined to be in a dimming turn-on state, and setting the compensation signal as an invalid signal when the dimming control signal is determined to be in a dimming turn-off state; and the driving module is used for controlling the output current according to the voltage sampling signal, the compensation signal and the dimming control signal. According to the technical scheme of the utility model, when dimming is started, even if the load change range is large, a good load