The integrated circuits used in this thermometer are not very common today. The indicator is a microammeter for a scale from 0 to 100o C. The supply must be made with a voltage of 1 to 12 V.
Found in documentation from the 1980s, this circuit can be used with other operational ones. The...
This circuit was published in the December 1987 Radio Electronics magazine. It uses two 555s to...
This circuit identifies the polarity of DC signals and if the signal is AC. The circuit is from...