Protection against AC voltage conditions
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United States of America Patent
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May 14, 2024
Grant Date -
Sep 16, 2021
app pub date -
Jun 1, 2021
filing date -
Dec 19, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A protective circuit can include an AC line configured to provide power from an AC source, and a first protection circuit coupled to the AC line and implemented to be electrically parallel with a load circuit. The first protection circuit can be configured to be in an inactive state to be substantially non-conducting when a voltage across the load circuit is in a normal range or an active state to be substantially conducting when the voltage across the load circuit has an overvoltage value greater than the normal range to shunt power away from the load circuit. The protective circuit can further include a second protection circuit implemented to be electrically between the AC source and the load circuit. The second protection circuit can be configured to block power from the AC source in response to a condition resulting from the first protection circuit being in the active state.
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