Of course, the current is extremely small, but a voltage of 300 V can be obtained from 9 V of a battery. The circuit is from an Electronics Now of May 1994. C1 adjusts the operating point.
This mechanical option touch switch was found in an old English documentation. Transistors may be...
The HV2405E integrated circuit is not very common these days. This circuit was found in the August...
This circuit is from an American documentation from 1954 and is indicated for use in toys with a...