Power supply voltage protection circuit
The utility model belongs to the field of power supply voltage, and discloses a power supply voltage protection circuit. The circuit comprises an overvoltage/undervoltage detection circuit and a voltage stabilization output circuit, and the overvoltage/undervoltage detection circuit is connected wit...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model belongs to the field of power supply voltage, and discloses a power supply voltage protection circuit. The circuit comprises an overvoltage/undervoltage detection circuit and a voltage stabilization output circuit, and the overvoltage/undervoltage detection circuit is connected with an input power supply and the voltage stabilization output circuit. The overvoltage/undervoltage detection circuit is used for outputting a high level to the voltage stabilization output circuit when the input power supply voltage of the input power supply is within a preset threshold voltage range, and outputting a low level to the voltage stabilization output circuit when the input power supply voltage exceeds the preset threshold voltage range; and the voltage stabilization output circuit is used for outputting a stable voltage within a preset threshold voltage range after receiving the high level output by the overvoltage/undervoltage detection circuit. By adopting the power supply voltage protection circuit, |
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