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 allows the use of an electret microphone with a 1.5 V source. We found it in the...
This sophisticated pulse generator was found in a Radio Electronics magazine from November 1985. It...
This amplifier was obtained in an Electronics Now based on the LM1875. The circuit must be powered...