This signal conditioner humidity sensor was found in a 1980s Linear Technology documentation. The circuit uses components from the era that can be designed with modern equivalents.
September 2017 - Intersil's ISL850x Synchronized Buck Regulators can be ordered from Mouser...
This circuit makes the RIAA equalization for signals obtained from a turntable for signal recovery in other...
The configuration shown was found in an old American manual. The circuit can be made with modern...