This circuit was found in a 90’s Electronic Engineering. The integrated circuits are of the time and the diodes are of general use. The generated signal is sinusoidal.
This dual-LED circuit indicates three signal levels. It was found in the January 1996 issue of...
With this circuit of a Popular Electronics from the 90's it is possible to test a diode with the...
Found in an Electronics World of 1966, this circuit makes use of FETs of the time. Modern...