piclist 2000\05\22\172444a >
Thread: Converting A/D into Temperature
face BY : mikespamBeGone@whitewing.co.uk

On Mon, 22 May 2000 13:46:59 -0400, you wrote:

{Quote hidden}

Use a lookup table - you can compensate for the thermistor
nonlinearity, and the nonlinearity of using a simple resistive divider
in one go. You can generate the table using the equation from the
thermistor databook data with a simple Basic/[insert your favorite
language] program, or probably Excel.

If you need a wide temperature range, use 2 switchable pullups to
improve linearity at the hot end, otherwise select the pullup/pulldown
to get a reasonable voltage swing over the range you're interested in.


In reply to: <27F5AF5F2C1BD2119F860008C7F4730A0113EA47@co-srv-06.ridgid.com>
See also: www.piclist.com/techref/microchip/ios.htm?key=temperature
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Subject (change) Converting A/D into Temperature

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