Over-Temperature Switch


Posted on Jul 4, 2012

The output goes high when a preset temperature is exceeded. A fixed half-supply reference voltage feeds a reference


Over-Temperature Switch
Click here to download the full size of the above Circuit.

current to the inverting input, and a variable current is fed to the noninverting input. Resistor R6 is a negative-temperature-coefficient (NTC) thermistor, so the potential at the junction of R5 and R6 rises with temperature. The op amp will switch high when that voltage exceeds the half-supply value. The trip temperature can be preset via R5.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

AudioWave 2.0
Over-under-voltage-monitor
Ladder Tutorial
CF8865 module using dedicated switching power supply circuit diagram



Top