This is a classic FM amplifier IF amplification stage configuration. The circuit is from a 1980s documentation. CN is the neutralizing capacitor.
This oscillator produces a rectangular signal in the range of 100 Hz to 1k Hz but with the change of...
This circuit was obtained in a 1999 English magazine. We can easily assemble it with a BD136 or...
I found this simple circuit from an English magazine from 1984. The circuit can be easily...