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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 transistorized shift register was found in a 1970s RCA documentation. The used transistors can...
The integrated circuit used in this charger is not very common today. The circuit is from...
This zener test circuit was found in an English publication from 1989. The circuit tests zener up to...