This circuit was found in a 1967 US documentation. It shows how to build a gain control by digital signals. The circuit can be used as a shield. FET can be a modern equivalent.
This immobilizer circuit for vehicles was found in a 80’s Hands On Electronics. The circuit...
This circuit was found in a 1968 General Electric manual. The circuit is for 3 A motors but can be...
We found this circuit in an American documentation from the 90s. The circuit applies to vehicles...