This circuit for analog TV was found in an American documentation from the 90s. The circuit uses an unusual power transistor today.
This circuit from a March 1971 Radio Electronics uses a transistor to stabilize the bias current of...
This circuit with two transistors was found in Radio Electronics magazine from March 1963. The V2...
This dimmer for high-powered incandescent lamps was found in a 1967 General Electric manual. The...