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.
November 2016 - Texas Instruments' new TLV8802 nano-power operational amplifiers for wireless...
This is a single transistor stage for a phototransistor. The circuit is suggested by Texas...
This circuit using current components was found in an old documentation. It is a sequential circuit...