=A0Very true Bob...the temperature parameter has to be considered seriousl=
y....the datasheet gives a fairly good discription of the temp-othere param=
eter response...


On Thu, 16 Nov 2006 Bob Axtell wrote :
>Bob Axtell wrote:
> > Alan B. Pearce wrote:
> >
> >>>> Temperature is very high around 80-90 degree celcius
> >>>>
>I haven't been paying attention. Did this resolve?
>
>The reason I was concerned with temperature is that most folks don't pay
>attention
>to how most instrumentation handles heat normally. If you start OUT at
>90C, then
>you simply have no reserve for normal device heating. You have to pay
>close attention
>to what your resistors are doing, your output drivers.
>
>Example: you design a normal 25C product. Inside the case, due to normal
>heating of the device,
>poor circulation, etc you get to 35C very easily. If you start out at
>90C, where can the heat go?
>
>That's why I was concerned with temperature. I have designed sewer pipe
>robots that have to
>operate at 40C, and there was a decreased lifetime (enclosed DC
>gearmotor in a sealed case)
>due to trapped heat.
>
>--Bob
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