Patent ID: 9224561
Filing Date: 2015-12-29
Classification: H01H

Abstract:
1. A system comprising: a relay having an actuation coil, the relay coupled to a source of an input voltage or current waveform; an actuation circuit configured to detect a peak or valley of a rectified voltage ripple waveform generated from the input voltage or current waveform and to cause an actuation voltage to be provided to the actuation coil, the actuation circuit comprising: an actuation delay circuit configured to delay the actuation circuit from providing the actuation voltage, wherein an actuation delay generated by the actuation delay circuit is adapted to cause the relay to begin allowing current to flow to a load device at a time coincident with a zero-crossing time value of the input voltage or current waveform, wherein the actuation delay circuit is configured based on the peak or valley of the rectified voltage ripple waveform.