This circuit, calibrated to the degree Celsius scale, was found in a National Semiconductor documentation from the 1980s. The circuit makes use of components of the time uncommon today.
This configuration has already been given in several articles and circuits on this website and...
This circuit is from a Harris Semiconductor datasheet from the 80s. However the circuit can be...
We found this logic level tester in a 1976 documentation. The circuit is powered by the voltage of the...