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.
We have other similar setups on this site. This one is from September 1976 Radio Electronics. The...
This low voltage AC control uses a triac. Any TIC series triac can be used and this device must be...
Using germanium transistors, this amplifier provides a 540mW output power when powered by 9V. We...