This circuit was found in the January 1996 issue of Electronics Now magazine. The circuit is powered by voltages from 10 to 24 V and has a control for the intensity of the output signal.
This circuit for cars with mechanical ignition systems was found in the Electronics Experimenter handbook...
This code practice circuit was found in a 1990s issue of Radio Amaterur Today magazine. It...
The circuit presented was found in the Linear Applications Handbook of the National Semiconductoir of 1994....