Protective circuit
The utility model provides a protective circuit, is including input power (1), energy -storage capacitor (C), power supply output circuit (2), power -down detection circuit (3) and treater (4), the input power and energy -storage capacitor link to each other, and energy -storage capacitor connects p...
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| Hauptverfasser: | , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model provides a protective circuit, is including input power (1), energy -storage capacitor (C), power supply output circuit (2), power -down detection circuit (3) and treater (4), the input power and energy -storage capacitor link to each other, and energy -storage capacitor connects power supply output circuit, and the input power is used for charging and to the power supply of power supply output circuit to energy -storage capacitor, and energy -storage capacitor is used for behind input power supply lost the power supply of power supply output circuit, and the voltage of powersupply output circuit output is inputed respectively to power amplifier's (100) base and drain electrode, power -down detection circuit connects the input power to behind the power supply lost, willfall electric message routing to treater detecting the input, by the base input voltage of treater output control power amplifier be lighter than or the signal that equals zero to the output circuit that supplies power after, |
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