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.
In the figure the well-known basic configuration of relaxation oscillator with unijunction...
June 2017 - New high power TVS for high-power retention applications with bi-directional features...
This oscillator takes advantage of the 2000 ohms headphone inductance as the oscillator circuit coil....