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From: Jim Thompson on 29 Jan 2010 16:37
On Fri, 29 Jan 2010 13:06:23 -0800, "Paul Hovnanian P.E."
<paul(a)hovnanian.com> wrote:

>Jim Thompson wrote:
>
>> On Thu, 28 Jan 2010 10:36:28 -0800, "Paul Hovnanian P.E."
>> <paul(a)hovnanian.com> wrote:
>>
>>>Jim Thompson wrote:
>>>
>>>> On Wed, 27 Jan 2010 19:28:57 -0700, "Paul Hovnanian P.E."
>>>> <Paul(a)Hovnanian.com> wrote:
>>>>
>>>>>I found my old HP-41C curve fit program card. Then I found my old
>>>>>HP-41C.
>>>>>
>>>>>The model I get from your curve is:
>>>>>
>>>>>.MODEL MyWhiteLED D
>>>>>+ IS = 4.4249E-9
>>>>>+ N = 8.3923
>>>>>+ RS = 7.7980
>>>>>
>>>>>No subcircuits required.
>>>>
>>>> BTW: "your curve"? Whose curve? You clip too much, Paul.
>>>
>>>Sorry. I took your spice model from your post, ran it for 70 current
>>>points and poked every tenth one into my program. I didn't have the table
>>>function values (the PDF you posted in a.b.s.e which I assume were your
>>>original measured data points). By the way, there appears to be an
>>>outlying data point in your graph.
>>>
>>>So I was actually curve fitting to your curve fit.
>>
>> I finally figured that out ;-) I first thought someone I had filtered
>> out, like from googlegroups, had posted some data ;-)
>>
>> The "outlying data point" is an unknown, so PSpice stops and _holds_
>> at the last PWL data point.
>
>Evidently the PSpice people haven't learned anything about dry-labbing and
>tossing undesirable data points out from the climatologists. ;-)

;-)

PWL HOLDS at the last entered data point. Perhaps I can create one
that continues the last SLOPE ?:-)

...Jim Thompson
--
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I love to cook with wine. Sometimes I even put it in the food.
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