This circuit is from a 1968 documentation using one of the first integrated circuits available at the time, the TAA370. The circuit is powered by 1.3 V using a 200 ohm handset.
Suggested by the National Semiconductor in 1980s documentation, this circuit uses components from the...
With a strong positive feedback (via a 10 M resistor) we can get the trigger setting for the...
This high voltage regulator uses only two passive components. The output is 100 V, but replacing...