Thermistor circuit basic application


Posted on Nov 10, 2015

As shown for the basic application circuit thermistor. Figure (a) of the basic temperature measurement circuit. The circuit temperature measurement accuracy


Thermistor circuit basic application
Click here to download the full size of the above Circuit.

is not high, can only 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 <RT2, operational amplifier (a) end potential is higher than (+) side potential, the output is low; Similarly, the month in which the temperature is higher than L RT2 when the temperature at the output is high. FIG Il (c) is the use of an operational amplifier and logarithmic diode temperature measurement circuit, logarithmic diode thermistor linear compensate, RP adjustable gain of the amplifier, thereby further improving the output characteristics.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Water Activated Alarm
LC meter 16x1 LCD Display
Expandable Graphic Equaliser circuit
Dynamic Audio Mixer
siren alarm circuit diagram usng lm358
Solar-Powered High Efficiency Battery Charger
Passive tone control circuit
LF353 JFET-INPUTDUAL OPERATIONAL AMPLIFIER
Negative Voltage Hot Swap Controllers in SOT-23
Metal detector circuit diagram 2
A Light Operated Repeating Timer Circuit



Top