This simple unijunction and bipolar generator appeared in Radio Electronics magazine in September 1865. It generates signals from 100 kHz to 60 MHz and is powered by two 9 V batteries.
This beat frequency oscillator or BFO was found in an American 1980s documentation. The circuit is...
Currents of a few milliamps are enough to drive loads up to 500 mA with this circuit. The...
This circuit was obtained in the 1994 National Linear Application Handbook. The circuit admits other...