100 MHz harmonic oscillator (CB9659E)

This Pierce oscillator was found in American documentation from the 1980s. Transistors support modern equivalents.

| Clique na imagem para ampliar |

Infrared Receiver (CB14790E)
This receiver uses old transistors that are equivalent to BC548 and BC558. The photo diode is of...
Crystal oscillator (CB24563E)
This circuit, which can function as a small transmitter, was found in the July 1978 issue of Radio...
Car Alarm (CB8925E)
This circuit was found in a 80’s Popular Electronics. The components are common and the 8-ohm...