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A742 ZERO-CROSSING AC TRIGGER-TRIGAC FAIRCHILD LINEAR INTEGRATED CIRCUITS GENERAL DESCRIPTION - The p.
A742 is a monolithic Zero-Crossing AC Trigger (TRIGAC) utilizing the Fairchild Planar* Epitaxial Process.
It is intended for use in ae power control circuits for operation directly off the ac line or with a separate ac or de power supply.
The TRIGAC functions as a threshold detector and a driver for triacs and SCA's.
As a threshold detector, it senses level changes at the inputs and as a driver it supplies high energy pulses for thyristor triggering.
The trigger pulses occur at the zero crossing of the load current and therefore minimize RFI generation for either resistive or inductive lo...

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