N° of component 

Thermometer Using a Diode (CB382E)

The sensor in this circuit is a BA315 diode. Other diodes can be experimented, but this is one with best results in terms of sensivity. This circuit consists in a bridge and a analog indicator. Power supply can range from 12 to 15 V and current drain is very low. Adjustments are made by the trimpot.





Circuit Bench