This circuit with germanium transistors is from 1960 and was found in Mullard's transistor application manual from 1960. The circuit can be adapted to use more modern transistors.
This circuit was found in a 2006 publication. It uses discrete components and CMOS that are still...
The sensor of this circuit is a common diode, and the measured range is from -10 to + 40º C. The...
The circuit presented was found in the Linear Applications Handbook of the National Semiconductor of 1994....