This is one of the channels of an amplifier suggested by Westinghouse in 1970s documentation. The circuit uses components from the era and no information about the transformer is given.
This automotive circuit was found in the September 1992 issue of Radio Electronics magazine. The...
This low frequency astable multivibrator use two probes in the simulation. The probes ar found in...
This circuit with zener diodes was found in documentation from the 90s. The zener diodes determine the...