Short Wave Converter (T987E)

The conversion range of this circuit depends on the coil. The circuit uses two tubes, and the power supply is not provided.

Test Circuit for CMRR (CB19725E)
With this circuit, from an old operational datasheet, it is possible to measure the CMRR,...
Motorcycle direction indicator (CB8957E)
Found in a Popular Electronics from the 90s, this circuit can be adapted to use LEDs. The power...
Infrared Video Link (CB14678E)
The circuits shown in the figure, that of an infrared video signal transmitter and receiver, were...