We found this circuit in documentation from the 90s. Instead of a voltmeter, you can use the voltage scale of a multimeter. The circuit tests batteries under load.
This power supply was found in a 2000 documentation. It can supply currents from 2 A to 15 V and 1...
We found this circuit in a Radio & Electronics Constructor of November 1975. The magazine no...
This circuit is designed to modulate small AM transmitters with the same power order. The circuit is...