This high-sensitivity circuit was found in a 1980s documentation. The source can be a 9 V battery with a splitter to make it symmetrical. The shock can be 200 uH or more.
This power supply provides a12 V stabilized output. The transistor must be provided with a good...
Found in a 1967 Electronics World, this circuit can use any modern equivalent FET. Observe the...
XTAL from 4 to 20 MHz can be used in this oscillator. The XRF choke can range from 10 to 100 µH...