The sensors in this circuit that triggers when the temperature goes out of a certain range are common diodes. The circuit is from the 1991 Reista Electronics Experimenter's Handbook.
This simple circuit serves to demonstrate the working principle of a Set-Reset flip-flop (S-R or...
This circuit interrupts the power supply when grounding is missing. The circuit is from an old...
This circuit originally came out in a Budget Electronics from 1981. The American magazine no...