This circuit was found in a 1965 General Electric documentation. It is intended for reception of the aviation strip, but inside an aircraft or nearby (which is now prohibited).
This circuit is a kind of Hertz Loop that can be used to check the operation of transmitters and...
Suggested by Motorola documentation from the 1980s, this circuit uses power transistors from the...
This circuit is from Popular Electronics from the 90's. The circuit discharges the battery with a...