With this circuit it is possible to obtain a voltage of -5 V from a 5 V source. The circuit is from Radio Electronics from May 1982. The maximum current is around 80 mA.
This circuit was found in a Radio Electronics from October 1952. The circuit equalizes the sounds...
This low frequency square wave oscillator using the 741 Operational Amplifier produces sound when...
We found this circuit in an old documentation. The instrument can be an ordinary multimeter in the...