Found in a 90s Popular Electronics, this circuit can power a miniature railroad with voltages of 15 V and currents up to 1 A. The circuit has soft start effects.
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...