Circuit with timing function and leakage protection plug
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United States of America Patent
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Feb 21, 2023
Grant Date -
Jul 21, 2022
app pub date -
Apr 6, 2021
filing date -
Jan 20, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed are a circuit with a timing function and a leakage protection plug. An output terminal of a timing chip U2 is connected to an isolating switch U3; the isolating switch U3 is connected to a rectifier module D3; the rectifier module D3 is connected to a circuit breaker X1; a switch tube Q4 and the switch tube Q3 are connected to a resistor R21, and a second switch terminal of the switch tube Q4 is grounded; an output terminal of a zero sequence current transformer is connected to a first input terminal of a microprocessor U1; and an output terminal of the microprocessor U1 is connected to a control terminal of the switch tube Q4. The leakage protection plug of this disclosure has both leakage protection and timing functions.
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