With a mains-rated transformer and 1:1 winding this benchtop circuit was found in the January 1995 issue of Electronics Now magazine.
The SN72741 integrated circuit is nothing more than the version of Texas Instruments of the known...
This circuit came out in a 1978 American publication, but can be assembled with transistors BC547 or...
Found in documentation for radio amateurs of the 70's, this circuit generates signals from 18 to 24...