Fast voltage follower (CB9003E)

Found in a 70s documentation, this amplifier employs an uncommon operating system today. The power supply must be symmetrical.

Thermocouple Amplifier (CB390E)
This old circuit uses na operational amplifier not easy to find in these days. But the circuit can be...
XTAL Oscillator (CB407)
Frequencies up to 50 MHz can be produced by this circuit, depending only on the used XTAL. L and...
Three-input majority gate (CB7248E)
This interesting logic circuit was found in a manual of neon lamp applications. | Clique na imagem...