Residual current sensor detection circuit
The utility model relates to a sensor technology field provides a residual current sensor detection circuit, including residual current sensor, singlechip, failure alarm circuit, reference voltage circuit, signal amplifier, voltage follower, direct current and alternating current signal filter circu...
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| Hauptverfasser: | , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | The utility model relates to a sensor technology field provides a residual current sensor detection circuit, including residual current sensor, singlechip, failure alarm circuit, reference voltage circuit, signal amplifier, voltage follower, direct current and alternating current signal filter circuit and comparator, residual current sensor output and singlechip pulse signal output all are connected with the signal amplifier input, the signal amplifier output is connected with the voltage follower input, voltage follower output voltage is connected with the positive input terminal and the singlechip of comparator respectively through direct current and alternating current signal filter circuit post -filter, reference voltage circuit is connected with the negative pole input of comparator,comparator output is connected with the microcontroller type end, the singlechip output is connected with the failure alarm circuit input. The utility model provides a current residual current sensorshort circuit or can't in |
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