This simple circuit is intended to test the zener test. RV1 can be calibrated in terms of voltage. The maximum voltage of the tested zener is that used in the circuit supply.
This bargraph VU meter with the LM3914 has an additional feature which is the peak indicator. In...
This circuit is from the SGS manual of linear integrated circuits of 1982. The L78xx is equivalent to...
This circuit was found in a 1968 documentation. It makes use of both NO and NC reed-switches and small...