The integrated circuits used in this oscillator are not very common today, as we obtained it in documentation from the 1980s. The circuit must be powered by a symmetrical source.
This circuit was found in Radio Electronics from the 90s. It converts capacitance into frequency...
I found this little signaling transmitter in old American documentation. The circuit has a good...
This is the traditional version of a neon flasher, found in a 2004 documentation. The capacitor...