onsemi UAA2016DG Power Switch IC 8-Pin, SOIC

Zero-voltage switching Triac trigger/driver ciruits which facilitate RFI-free power regulation of resistive loads.

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The number of complete mains cycles during fixed repeating periods (typically 1 to 10 seconds) is varied, thus altering the duty cycle or on-/off-time ratio. Trigger pulses coincide with the zero-crossing times of the mains supply thus ensuring no RFI is produced when using resistive loads.