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Electronics Question, please help

  • 20-01-2002 9:24pm
    #1
    phobos
    Closed Accounts Posts: 1,322 ✭✭✭


    A mate of mine is currently working on his final year project in Electronic Eng. He wants to know how to create a simple temperature reading circuit (it's part of a larger system). This will of course comprise of a thermistor, and a ADC (Analog to Digital Converter), and some sort of display. Reading from the thermistor will be from a microcontroller (8051) and programmed in assembly.

    So my question is based solely on how to build a temperature reading circuit.

    cheers

    ;-phobos-)


Comments

  • #2
    BioHazRd
    Registered Users, Registered Users 2 Posts: 2,088 ✭✭✭BioHazRd


    I reckon the best way to do this is have the thermistor connected to the input of a wheatstone bridge and the output amplified and then passed to the adc. This would give a good degree of accuracy and would also allow for some degree of calibration.

    It should be fairly easy to get relevant diagrams / schematics for this type of circuit. If memory serves me right, Electric Circuits Fundamentals by Floyd may have something you could use.


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