Colpitts Oscillator with MOSFET (CB8141E)

Found in an American documentation from 1969, this circuit operates at a frequency determined by the resonant circuit.

| Clique na imagem para ampliar |

12 W Amplifier (CB13679E)
The integrated circuit of this amplifier is not very common today. The output transistors can be...
Water Level Alarm (CB5313E)
This circuit produces a loud sound in the speaker when water level reaches the sensor. The power...
Video cable equalizer (CB21319E)
This circuit was found in a Linear Technology documentation from the 90's. The integrated circuits are...