With this circuit it is possible to add a conductance scale to a common multimeter. The circuit was found in the magazine Electronics Now of February 1997.
In the figure we have a bistable multivibrator using an operational one. The circuit is from old...
This is another of the Star Trek red alert circuit that you can find on this site. We took this...
This circuit for testing zener diodes by lifting their curve on an oscilloscope was presented in...