Simple 1-tube receiver (T960E)

This 1V heater tube circuit was found on a Radio Craft from 1945. The circuit is for medium wave and can be used as a tuner.

Capacitive Code Switch (CB10446E)
This circuit was obtained from a Radio & Electronics Constructor from March 1976. The magazine no...
Precision Full Wave Rectifier LM741 (CB25220E)
This buffered version of the previous circuit appeared in an article in the September 1989 Radio...
Darlington Stage with Feedback (CB975E)
This circuit was found in a 1968’s publication and uses germanium transistors. Equivalents can be...