The sensor in this simple circuit is a NTC (Negative Temperature Coefficient) resistor. NTCs with resistances between 10k and 100k at 20 oC can be used. The meter is a common 0-200 µA or 0-1 mA amperimeter. The circuit can be powered from cells or power supply. A multimeter can replace the meter.

 


 

 

 

Datasheets


N° of component