This circuit was found in the December 1992 issue of Radio Electronics magazine. The current is a few mA and the maximum input voltage is around 12 V.
This common power source has only as a differential the selection of the voltage ranges by the...
This circuit is from a Radio Electronics from February 1965. The transistor is general-purpose germanium at...
The presented project is simple, but efficient in medium distance irrigation. In this circuit, the time...