This circuit was suggested by General Electric / RCA in a 1980s documentation. The components are of the time and the circuit must be powered by symmetrical source.
The operational amplifier used in this configuration is of an uncommon type today. The circuit can be...
November 2016 - The new self-adhesive surface temperature sensors of the Amphenol JS series can...
This circuit was found in an old American magazine for radio amateurs. The circuit is based on a...