Current Booster (CB9004E)

Using components from the 70s, this circuit can be implemented with modern equivalent components. The power supply must be symmetrical.

Milliammeter Scale Expander (CB4773E)
This circuit was found in a Popular Electronics of the 1990s. Its purpose is to expand the scale of...
Transistor Amplifier - TIP31 / 32 (CB1004E)
This circuit consists of a traditional version amplifier with complementary output transistors...
Analog to digital converter (CB20540E)
Indicated for applications with a PC, this circuit was obtained in an English publication in 1992....