This transistor tester with different gain ranges was found in documentation from the 1980s. The circuit can still be implemented with more modern components and used with general purpose transistors.
We found this circuit in a 1977 Radio Shack manual. The light bands are given by the operating gain...
The circuit in the figure is a current regulator with adjustment in the range of 0 to 3 amps. The...
This stage for JFETs was found in a 1965 US publication, but is valid for modern components. |...