Series Crystal Butler Oscillator (CB25557E)

This circuit was described in an article in the February 1993 Radio Electronics magazine. The frequency depends on the crystal and L1 is optional.

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Temperature to frequency converter (CB7325E)
This circuit was obtained in a Radio Electronics of the 90s. The circuit uses an integrated circuit...
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This is the traditional configuration of na Astable Multivibrator using two NPN ttransistor....
Current Bias JFET (CB26248E)
Found in the 1995 Encyclopedia of Electronic Circuits volume 5, this circuit has a constant...