This circuit was found in the March 1995 issue of Electronics Now magazine. The circuit requires a symmetrical power supply, and the FET is a common general-purpose type.
This circuit was found in an Electronics World of 1968, making use of components of the time, not...
This 80's General Electric circuit is guarded by the noise-guard for operating current. The...
The circuit shown in the figure below is from the 1993 Linear Technology Applications. The...