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Simplified bridge type thermosensitive temperature measureme

2016-05-15 08:59  
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Simplified bridge type thermosensitive temperature measurement circuit
Simplified bridge type thermosensitive temperature measurement circuit
Circuit Work Four-leg resistors are equal, this is the most common method that the bridge circuit selects parameters,each leg of the circuit resistance takes 10K. VR1 is a variable resistor, and itsfunction is to make the output voltagebe 0 at the required temperature, when the thermistor resistance and the arm resistance are equal, adjust VR1 so that the bridge is balance. Thermistor resistance falls due to temperature rises, the differential amplifier output will rise, the output voltage depends on the thermistor constant B or increasing the voltage at the bridge.