This circuit was obtained from the March 1994 Electronics Now magazine. The circuit uses a common transistor which can be a low noise type such as the BC549.
Currents up to 1.5 A can be regulated with this circuit. The resistor R that determines the...
We found this precise crystal oscillator for the 144 MHz band, depending on the crystal used. The...
This circuit was found in an English publication from 1967. The circuit is for listening on a...