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.
This is the basic operational amplifier configuration for gain 10. R2 can be changed to other...
This circuit was obtained in a 1988 publication, but it can be assembled very easily today, as all...
This circuit was found in a 1966 EEE. Transistors support modern equivalents and the waveforms are...