This circuit was found in an article in Radio Electronics magazine. The issue is from July 1992 and the circuit uses components that are common today.
June 2017 - New high power TVS for high-power retention applications with bi-directional features...
Found in 90s Radio Electronics, this circuit is intended for amplifying analog video signals....
This circuit is from a 1966 American documentation. The circuit uses a photo-FET, an unusual...