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This circuit is from a 1967 RCA SCR manual. The circuit uses components from the era that can be replaced by modern equivalents. The transformer is 12 V x 1.2 A.
We found this circuit in the April 1975 Radio Electronics magazine. The circuit has a latch and...
We found this sophisticated home alarm in a 1994 documentation. The circuit supports sensors of...
This circuit was found in the 1991 Electronics Experimenter's Handbook. It activates a relay when...