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 code practice oscillator was found in an English publication from the 80's. The circuit can...
This circuit that also has a Power On reset was obtained from a 2005 Linear Technology manual. The...
This circuit is based entirely on TTL gates. The circuit must be powered by a voltage of 5...