This circuit uses a common multimeter on the voltage scale. The calibration of the scale should be done based on transistors with known gains.
I found this circuit in an article in a 2003 publication. The circuit is an example of how to...
This power supply is not protected from shorts in the output. Output voltage is given by the...
This circuit was obtained from HAM Radio magazine in an 80's issue. The FETs are types of the time...