Lamp driving circuit with overvoltage protection
The utility model discloses a lamp driving circuit with overvoltage protection, which comprises a power supply input end, a rectification filter circuit connected with the power supply input end, a driving control circuit connected with the rectification filter circuit, an output terminal connected...
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| Hauptverfasser: | , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a lamp driving circuit with overvoltage protection, which comprises a power supply input end, a rectification filter circuit connected with the power supply input end, a driving control circuit connected with the rectification filter circuit, an output terminal connected with the driving control circuit, and an overvoltage protection circuit, the overvoltage protection circuit comprises a voltage stabilizing diode, a unilateral diode and a second capacitor, the voltage stabilizing diode and the second capacitor are connected in series and then connected to the driving control circuit, the positive electrode of the unilateral diode is connected to the connecting point of the voltage stabilizing diode and the second capacitor, and the negative electrode of the unilateral diode is connected with the driving control circuit. According to the utility model, the structure arrangement is reasonable, the driving can be effectively realized, the application of an integrated chip is reduced, |
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