This old configuration of an audio amplifier has a push-pull two-transistor output stage. Output power is low and the critical components are the transformers. The circuit was found in an 1958’s publication.
This sophisticated power supply from the 80s uses components from the period, which makes it...
We found this small shortwave transmitter circuit in a 1994 documentation. The frequency of the...
This circuit generates a signal up to a few megahertz depending only on the LC resonant circuit...