Found in a 1965’s Electronic Design, this circuit operates with a voltage of 1.5 V. The relay can be of a reed relay or other type.
This antenna or booster amplifier operates with signals from the midband (MW) range up to the VHF...
This circuit was found in an American 1980s documentation. The transistorized step is the...
This National Semiconductor circuit uses integrated circuits that are uncommon today. The circuit...