PHASE_CONTROLLED_DIMMER

Published:2009/7/13 4:39:00 Author:May | From:SeekIC

Mullard TCA280A trigger modulels connected to comρare amplitude of ramp waveform with controllable DC voltage in difference amplifier,At point of coincidence, trigger pulse is produced in output amplifier for triggering triac that controls lamp load. Choice of triac depends on load.Values shown for C4 and R9 give 100-μs pulse—''TCA280A Tigger IC for Thyristors and Triacs, ''Mullard, London, 1975,Technical Note19,TP 1490,p 12.



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