Multi Tube Amplifier (T446E)

Obtained in MIT documentation this circuit uses several tubes to obtain a large gain in the amplification of small signals.

Negative Voltage Converter (CB5107E)
This self-oscillating voltage conversion circuit was found in an American 1980s documentation. The MOSFET...
Car Radio Switched Regulator (CB15133E)
This high-performance circuit was found in the 1982 SGS Linear Integrated Circuits Manual. The...
Light Speed Control (CB16480E)
This is a very simple configuration with a power transistor to control a DC motor from 3 to 12 V...