Amplifier Stage (CB25056E)

This capacitive-coupled stage can be implemented with any general-purpose transistor. The circuit can be used with 6 to 12 V supplies.

Modulated Light Detector (CB24488E)
A way to avoid the influence of ambient light, or even the action of external light sources on the...
50 kHz to 1000 kHz oscillator (CB13866E)
We found this simple oscillator in a publication for radio amateurs in 1974. The transistor can be...
kHz Crystal Oscillator (100)
This circuit was found in the Radio Electronics magazine in an article about emitter-coupled...