With this circuit from Popular Electronics it is possible to determine the characteristics of a microammeter or common milliammeter using a multimeter.
This power supply can sources currents up to 22 A to a load. Voltage is 12 V and the transistor...
We found this project in a 2002 documentation. The transistor amplifier has a power of a few watts...
This simple circuit must be powered by a voltage of 5 V. The integrated circuit is the 7400, but...