This high voltage amplifier is based on Elantec components based on high voltage feedback. The supply voltage range is 50 to 230V symmetrical and the quiescent current is 56 mA.
This low power circuit for the FM band was found in a spy book from the 90s. The tunnel diode is...
This circuit was found in an old Motorola documentation from the 70s, as it uses one of its...
Suggested by General Electric in a 1970 documentation, this circuit makes use of some components of...