60's crystal radio (CB22171E)

Found in an English publication from the 1960s, this circuit uses period components, including the commercial grade coil.

TV Transmitter (CB18042E)
This transmitter outputs signals to the analog TV range operating with composite video signals for analog...
3 and 6 V Stabilized Solar Power Supply (CB18661E)
This circuit, with output currents up to 500 mA, can stabilize or regulate the output voltage of a...
Infrared Remote Sound (CB17640E)
The critical point in this project is the adjustment of the optical system, mainly to avoid...