12V power supply protection circuit for switching system
The utility model discloses a 12V power supply protection circuit for a switching system, and belongs to the technical field of power supply protection. The circuit comprises a U39 chip, an anti-surge protection circuit, an external microcontroller circuit, an over-current protection circuit and an...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a 12V power supply protection circuit for a switching system, and belongs to the technical field of power supply protection. The circuit comprises a U39 chip, an anti-surge protection circuit, an external microcontroller circuit, an over-current protection circuit and an over-current fault time declaring circuit, and the anti-surge protection circuit, the external microcontroller circuit, the over-current protection circuit and the over-current fault time declaring circuit are all electrically connected with the U39 chip. The 12V power supply protection circuit for the switching system takes a U39 chip as a core and is electrically connected with an anti-surge protection circuit, an external microcontroller circuit, an over-current protection circuit and an over-current fault time declaring circuit, so that the power supply protection circuit for the switching system is realized. The circuit is scientific, reasonable, practical, safe, convenient, simple in circuit structure, low in |
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