The circuit diagram is as follows: 
This circuit is used to indicate two different water temperature trigger points. When the temperature reaches the set value, the LED emits light. The circuit revolves around the LM2904 dual op amp, powered from a 12V automotive system. The Thermistor is connected in series with a 10kΩ resistor and is connected to the positive pole of the 9.1V power supply and grounded.
Aluminum Electrolytic Capacitors
Aluminum Electrolytic Capacitors
Large Electrolytic Capacitor,HV Electrolytic Capacitors,Aluminum Electrolytic Capacitors
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