INEXPENSIVE_RADIO_CONTROL_USES_ONLY_ONE_SCR

Published:2009/7/1 21:08:00 Author:May | From:SeekIC

A simple and effective receiver for actuating garage doors, alarms, warning systems, etc.The SCR, which has a very low trigger current 30μA is typical-it requires an input power of only 30μW to activate the relay. A high Q tuned antenna circuit assures rejection of spurious signals. A whip or wire antenna is adequate up to 100 feet from a low power transistor transmitter. A momentary-off switch resets the circuit.



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