Now I always get this around the wrong way, so please research my advice!!
This component is an NTC type similar to Mouser 785-143-102LAG-RC1 and not a
PTC. This type you¹d find, say, in an old TV set¹s CRT degaussing system
which goes very high resistance when it heats up! TV sets is where I started
so I should remember, but that was a very long time ago! During the R n¹ D
phase of building the board we used the TH1 from an old board and the MG
circuit remained pretty stable during testing.
Cheers,
Andy
On 24/02/2010 17:17, "ML" <f115@rocketmail.com> wrote:
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> Hi again ~
>
> I've been checking out the BOM and had some more questions. I'm trying to work
> out some of the kinks where original parts will not be on hand to rebuild some
> of these boards.
>
> 1) Is there any info on that 1K Thermistor? Do we know what its temp range and
> tolerance is? I wonder if that info would be sufficient to find another
> solution from Mouser or some other supplier. I'm trying to see if I can find
> an alternative. I would think it is. I have no doubt that you guys did your
> homework but I thought I'd ask. I'll need more of these than what I have
> on-hand.
>
> 2) The pin headers. Were you able to use the old connectors with your new pins
> or did you have to change the connector as well?
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