The circuit shown uses an operational amplifier that is uncommon nowadays. The circuit was obtained in a 1994 Linear Applications Handbook by National Semiconductor.
This thermometer, which uses common diodes as sensors, was found in a 1975 magazine -...
The time constant of this circuit is 100 x R1 x C1, which leads to the possibility of obtaining times...
This circuit was found in the February 1999 issue of Electronics Now magazine. The circuit...