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.
By connecting several photocells in series, we can directly activate a sensitive relay, as shown in...
The purpose of this circuit is to provide a constant current to an experimental electromagnet. The...
Found in Linear Technology documentation from the 90s, this circuit uses components from that...