Full_wave_variable_AC_control_for_motors_and_lamps_using_a_triac_and_triac

Published:2009/7/21 7:52:00 Author:Jessie | From:SeekIC

Full-wave variable AC control for motors and lamps using a triac and triac. This circuit gives full symmetrical control from 0 to 100% over the AC load. For fan or blower operation it may be desirable to place a 100-ohm 1 -watt resistor in series with a 0.1μF capacitor directly across the triac to improve performance. Best operation is achieved when the circuit is adjusted during the brightest part of the day. R4 is adjusted so that the lamp plugged into the outlet is lust off. In this manner as it gets darker the light will come on (courtesy General Electric Company).



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