This circuit was found in General Electric documentation from 1965. The transistors are from that time. The diodes consist of a component that contained them.
This fast converter using operational was found in a 70s American documentation. The circuit can be...
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...
This RF wattmeter was found in an American 1980s documentation. The components are common and the...