We found this circuit in the 1992 special edition of the Electronics Experimenter Handbook. The components used are still current, many admitting equivalents.
This circuit was found in a 1970's Radio Electronics. The pulse transformer has a 1: 1 turn ratio....
This 3-digit digital gauge was found in the July 1900 issue of Radio Electronics magazine. The...
This circuit makes use of a commercial type current transformer. The circuit is from a 2005 Linear...