AC_DC_CONTROL_WITH_SCR

Published:2009/7/6 21:38:00 Author:May | From:SeekIC

Decoder output of microprocessor feeds 555 timer driving LED that is mounted in light shield with cadmium sulfide photocell. Combination serves as optocoupler for triggering gate of SCR to energize load for short time interval determined by value of resistor and capacitor used. Serves to control small DC motor such as is used to raise or lower transmitter power in small increments.-R. Wright, Utilize ASCII Control Codes!, Kilobaud, Oct. 1977, p 80-83.



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