Board thermistor on KT7A Raid

[SickBoy]

A question....

Could I clip the old board temp thermistor on my KT7A-Raid off (located between the southbridge chip and the HPT370 chip) and solder the leads from a new thermistor on, possibly on longer leads so I can place that sensor where I want it (such as on the side of the CPU die)? What value thermistor would I need?

SB

[SteenkyBastage]

from what i understand, the temps you get from those probes are from a calculation of the actual temps the probe is getting. so if you put one touching the side of the core it would still be subjected to that mathmatical calculation and give you an incorrect temp.

as far as whether that's possible to do or not, i'm not positive.

[Yoric]

Isn't a thermistor just a resistor that changes its resistance based on the temperature?
I think that as long as you got the exact same range of resistance thermistor you could do that

anyone know for sure?

[WyrmMaster]

More than likly its a 10k thermistor, that seems to be the most common.

What i would do though is just clip it off, sodder on your wires, and then sodder it on to the wires, then you wont have to worry about getting the right thermistor.

And yes, Yoric, your right, it just measures the resistance, which changes with tempeture. A 10k thermistor has 10,000 olms resistance at 25c (i think thats the temp), and it varies from there.

[donny_paycheck]

100% correct....10kohms at 25C...hotter it is the less it resists

[Shep]

The KT7A uses a 30K ohm thermistor avaliable at radio shack. You could move the thermistor without any problems as long as the connection is good and doesn't give any more resistance. However the thermistor is too big to fit between the cpu and heatsink, it will raise the heatsink off the core.

[donny_paycheck]

I stand corrected....do you know if the KG7 family uses the same value by any chance?

[SickBoy]

Originally posted by Shep
The KT7A uses a 30K ohm thermistor avaliable at radio shack. You could move the thermistor without any problems as long as the connection is good and doesn't give any more resistance. However the thermistor is too big to fit between the cpu and heatsink, it will raise the heatsink off the core.

If I did this I'd stick the thermistor directly on the side of the core.. touching it if possible. I know that you can't stick anything between the core and the heatsink.

SB