We found this circuit that converts a direct voltage into a proportional frequency signal. The circuit is from an Electronics Now from April 1993. The JFET can be of any type.
This very simple circuit must use coal microphones of the type found in very old equipment. The...
We found this circuit in the November 1974 issue of Radio Electronics magazine. The circuit has a...
July 21, 2015 - Mouser Electronics, Inc. is now shipping the Curiosity Development Board from ...