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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.
This circuit was found in 80's Popular Electronics. The components used are common and the number of...
This voltage regulator circuit has a traditional configuration with two transistors, and can be...
Found in RCA documentation two years 70, this circuit triggers an incandescent lamp at dusk. The...