This is the typical circuit of a local oscillator for a superheterodyne FM receiver. The circuit was found in a 1980s documentation and is typical of early and early receivers.
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...