30W Amplifier (T1544E)

This hi-fi amplifier is from a 1975 RCA tube manual. The critical components are the transformers. Power supply is included.

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...