Re: TI-H: Temp sensor failing
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Re: TI-H: Temp sensor failing
html code deosn't work in your sig. It only makes it a lonk hwne It sees
skljf@hut.net or http://.... Just a freindly reminder.
John Fraser @ Happyware 1997
Can you live without the EuP
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> From: "Richard Piotter" <richfiles1@hotmail.com>
> To: ti-hardware@lists.ticalc.org
> Subject: Re: TI-H: Temp sensor failing
> Date: Tue, 11 Nov 1997 21:52:56 PST
>
> I'm not sure, but excessive heat while soldering may do the trick. Once
> I tested a chip to find its range, got it to 294 degrees F!!! I was
> amazed, but when it got to 92 degrees, it shot down to 32 F (0 C). I
> believe that if you hold the soldering iron too long, it causes the chip
> to expand more than it was designed to. It works because the expansion
> pushes things together, but when it cools, it contracts and messes up.
> Try it again with a new circuit and just barely touch the soldering iron
> to heat the chip. They are designed so the case conducts the heat
> straight to the silicon sensor inside and that means it is extra
> sensitive to your soldering iron
>
> >
> >Does anyone know why my temp sensor always reads 0? I've built two of
> them
> >now.. but one never reads higher than about 10 or so, and the other
> only 0.
> >Anyone have any suggestions?
> >
> >
>
>
> Richard Piotter
>
> E-Mail:
> richfiles1@hotmail.com
> richfiles@usa.net
>
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