| 摘要 |
Circuitry, systems and methods that address the need to coordinate relay switching with another event, such as a zero crossing of an alternating current (AC) voltage waveform are described. In some embodiments, the systems and methods continuously or periodically calibrate the timing of control signals to a relay, such that the switching of the relay in response to some (e.g., second or subsequent) control signals occurs closer in time to a zero crossing of an AC line voltage than the switching of the relay in response to other (e.g., initial or first) control signals.
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