Mini Organ (CB21653E)

This toy organ was found in Popular Electronics from January 1967. It can be constructed from modern equivalent transistors.

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...