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 sensitive microammeter was found in documentation from the 1980s. The accuracy of the circuit...
This circuit produces modulated tones in a loudspeaker. The effects can be adjusted by the...
We found this circuit in an old documentation from the 70s. The circuit can use any varicap and...