LED DRIVING CIRCUIT

An LED driver circuit is provided to control the driving voltage according to the temperature by controlling the voltage and current according to the LED property. An AD/DC converting circuit(100) converts the AC power to the DC power. The first switching device(Q1) is used in order to operate the A...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHEON, WOO YOUNG, KIM, JIN HONG, YOM, HONG SEO, YU, YOUNG MOON, SONG, SANG BIN, KIM, GI HOON, PARK, TAE JOON
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY
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Beschreibung
Zusammenfassung:	An LED driver circuit is provided to control the driving voltage according to the temperature by controlling the voltage and current according to the LED property. An AD/DC converting circuit(100) converts the AC power to the DC power. The first switching device(Q1) is used in order to operate the AD/DC converting circuit. The first switching device is formed with the field effect transistor etc. The second switching element(Q2) determines the operation of the AD/DC converting circuit. A temperature compensation circuit(200) comprises the resistance(R2, R7) and the thermistor(RT1). A current control circuit(300) appropriately controls the amount of the necessary current for operating the LED module. The resistance(R8) changes the current flowing in the circuit to the voltage.