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 circuit is from a 1991 PE Hobbyst Handbook. The circuit uses two trigger transformers for a xenon...
A JFET is used in this circuit to maintain constant gain. The circuit is from an Electronics Now...
Found in a Popular Electronics from the 90s, this circuit uses a double 555 to emit beeps when the...