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 simple charger was found in a 1980s documentation. The transistor may be the TIP42 with a...
The power source shown for powering for small TTL circuits was found on a Radio Electronics...
This stage for JFETs was found in a 1965 US publication, but is valid for modern components. |...