This circuit was found in a 90's EDN. It can be implemented with either TTL or CMOS logic and used as a shield.
This circuit is from a PopularElectronics of June 1992. The magazine no longer exists, but the...
The sensor of this circuit is a common diode, and the measured range is from -10 to + 40º C. The...
The author has many books he had written in Eglish (See the Biography) published by famous...