This circuit was found in the July 1982 issue of Radio Electronics magazine. The integrated circuit is of a newly released type at the time.
This circuit is a from publication 1980, but still can be mounted with BC548 transistors for Q1...
The inverter shown in the figure can generate voltages in the range of 80 to 600 volts depending on the...
The transistor of this circuit can be the BC558. The circuit is from an old documentation...