2-JFETs Oscillator (CB22396E)

This LC oscillator was found in English documentation from the 1990s. JFETs may be general-purpose equivalents.

Tuned audio oscillator (CB22254E)
This circuit is from a publication from the 50's. Inductive components are critical, and...
Stereo Pre Amplifier (CB18559E)
This simple two-transistor circuit used transistors from the 60s, having been found in a...
Capacítancemeter (CB3878E)
This circuit uses an oscillator that generates a signal of approximately 1450 kHz to test...