This circuit was found in the May 1984 issue of Radio Electronics magazine. It analyzes the exhaust gases emitted by a car. The circuit uses a special gas sensor from that time.
This circuit was found in old documentation and can be implemented with other operational...
This circuit is from Motorola's Linear Interface ICs from 1993. The circuit uses a booster...
Found in a 1970s American publication, this circuit is intended for color TV video signals. The main...