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.

Nuclear Particle Detector (CB5927E)
The sensor of this circuit is a large surface diode. We believe that a small solar cell can also...
Thermometer Using a Diode (CB382E)
The sensor in this circuit is a BA315 diode. Other diodes can be experimented, but this is one...
Active Filter (CB5109E)
This active crossover filter was obtained from the component manual used. Below is the performance...