Magic eye test (T424E)

This circuit tests the 6AF6 magic eye indicator tubes. The circuit is from modern documentation that suggests tube circuits for modern experiments.

Speed control for car or model railroad (CB5417E)
This circuit for modeling was found in a 1980s documentation. The SCR can be the TIC106 and the...
Remote control feceiver (CB20573E)
This super regenerative detector circuit was found in an English documentation from 1963. The coil...
Three Transistor Directed Coupled Stage (CB976E)
This circuit was found in a 1968’s publication and uses germanium transistors. The characteristic...