This circuit was found in an American publication from 1968. The transistors are from the time, but it can be made from modern transistors.
This multi-purpose power supply provides voltages of +15, -15, 300 and 1 000 V and is very useful on...
The two damped oscillators shown can be adjusted to generate the drum sound when we touch the...
This circuit was found in a Popular Electronics from the 80's. The circuit can be applied to any...