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LM334 based tempreature gain circuit

Discussion in 'Electronic Basics' started by james, Apr 15, 2004.

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  1. james

    james Guest


    Thanks for the schematic for a circuit to do the job, certainly a lot
    simplier than the multiple opamp and thermistor version.

    I have decided to base the circuit on this design, but I have a couple of

    The schematic specifies LM334 as the temp sensor, however upon looking at
    the datasheet these sensors only have a operating range of 0deg to +70deg c.
    required circuit operated beyond these ranges!

    Does the LM334 not require an adjustment input, the sensor is a three wire
    unit - or is two wire input ok?

  2. Fred Bloggs

    Fred Bloggs Guest

    How many times are you going to post this? I answered under your
    "Control of heater circuit part2" thread.
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