This simple neon lamp oscillator produces a 140 Hz, 40 V peak-to-peak signal. The frequency is given by the capacitor that can have its value changed. Note the high supply voltage.
This TTL circuit was found in a 1978 technical documentation. The power must be supplied with 5 V....
This circuit, suitable for tube equipment, was found in an old documentation. It uses a high...
The BA1404 integrated circuit (not very easy to obtain) consists of a complete stereo FM...