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Tnx SayZer ...
no need for opamp for the adc
have tryed this :
(+)
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10K
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+------[47K]---+--> AD
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PT1000 100n
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(GND) (GND)
and this to :
(GND)-- 100nF -- PT1000 -- > AD
this workes fair but not stabil (RC)
is ther a better way to do this ?
/kim
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For ADC input, no need for capacitor. RC or POT commands are painful to work with PT series.
Attached schematic is what I do to read PT3000.
For PT1000, 5K6 to Vdd needs to be determined experimentally.
Currently with this schematic, reading PT3000 is quite satisfactory.
'Added the schematic.
Last edited by sayzer; - 18th April 2006 at 11:39.
"If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte
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Well I am new in this forum but can´t finde the Attached schematic do you use another forum for Attached files ?
/Kim
Last edited by kimmi; - 18th April 2006 at 08:44.
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tnx ...
now I can see it
will try it tonight after work ..
Kim
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test
Hi SayZer ..
Have tested it
but do we need to limit the current to 5 Volt 1 mA
/kim
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