Thermistor basic application circuit b

  
As shown for the basic application circuit thermistor. Figure (a) of the basic temperature measurement circuit. The circuit temperature measurement accuracy is not high, can on
Thermistor basic application circuit b - schematic

ly be used for less demanding precision applications. RT is a positive temperature coefficient thermistor, the temperature rises, the output voltage vo is increased, decreased and vice versa; RT negative temperature coefficient thermistor, the temperature rises, the output voltage vo is lowered, increased and vice versa. Figure (b) is measured using a thermistor temperature differential operational amplifier circuit, temperature measurement accuracy improved. This circuit can detect a temperature difference between two points, which when RTi RT2 at a temperature lower than that RTi, operational amplifier (a) end potential is higher than (+) side potential, the output low; similarly, month in which temperature l rt2 when at high. fig il (c) use of an and logarithmic diode measurement circuit, thermistor linear compensate, rp adjustable gain amplifier, thereby further improving characteristics.




Leave Comment

characters left:

New Circuits

.