Found in a 90s Linear Technology documentation, this circuit is intended for powering cold cathode fluorescent lamps. The circuit has an input voltage from 4.5 to 20 V.
This simple electroscope with bipolar transistors is not the most sensitive, but can detect static...
This oscillator for various frequencies was obtained from a 1980s telecom documentation. The...
This circuit is from a July 1970 Radio Electronics magazine. The sensors are metal probes. The 18 V...