Found in a 1967 RCA documentation, this AC power grid contactor can be fitted with modern equivalent components. The SCR and the diodes must be according to the load current.
This circuit was found in an American documentation from the 90's. The circuit is intended for...
This circuit can reduce the voltage of a source by providing regulated adjustable output. The...
Found in a 90s Popular Electronics, it serves both TTL and CMOS logic. The injector can provide 10...