This circuit, which controls both the temperature and the level of a liquid in a reservoir, was found in an Electronic Design from the 90s. The circuit is based on a double 555.
This circuit uses a common diode as sensor. The output goes from 0 to 10 V with the temperature change in...
The circuit presented was suggested by the National Semiconductor's Linear Applications Handbook of...
This circuit was found in a 1966’s NASA documentation. The circuit shows how to use thermistors...