OPTOISOLATOR_DRIVE

Published:2009/7/13 22:35:00 Author:May | From:SeekIC

TL440 zero-crossover switch uses pulsed gate drive. Switch supplies phase-locked driving pulses during zero-voltage crossover period, to minimize electromagnetic interference generated during turn-on of triac. Works well with resistive loads, but inductive loads can create phase shift that affects firing time of triac．－ Thyristor Gating for μP Applications, Texas Instruments, Dallas, TX，1977,CA-191,p 6.



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