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 is a commercial radio circuit for 1967 AM. It was found in Japanese documentation. The...
Using a dual 555 CMOS this very useful circuit on the bench was found in the July 1998 Electronics Now...
We found this circuit in a 70's factory documentation. The circuit formed L1 / L2 and C1 must be...