This circuit is from a 1968 Electronic Design. The characteristics of the output transformer are not given and the transistors are of the time. The circuit provides a power of a few watts.
Found in documentation from the 90s, this circuit is based on operational amplifiers of the time....
This circuit was found in a 90s Popular Electronics. The circuit indicates if a transmitter is working,...
Found in a 90s Popular Electronics, this circuit generates high voltage for radiation detecting...