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Old 19th March 2004, 02:04 AM   #11
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Quote:
Originally posted by fdegrove
That plus the fact that you need to consider fault conditions as well.
1. Resistors are rated for typical conditions at a typical temperature (usually 25ÝC). A heatsinked type may be rated for case at 25ÝC (like a transistor) whereas a sand resistor may be rated for ambient instead.
2. 5W is about 70% of the actual load. On a *really* hot day (or a typical one in India, hehe) in a stuffy chassis, it might have trouble.
3. Ah, I see you believe in burning a $30 tube to save a $.10 resistor...

Tim
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Old 19th March 2004, 05:19 AM   #12
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Going back to the catalogue, I guess that the correct one may be this one:

RW 19X64 NI AN 360 5%

http://www.vishay.com/docs/50016/rw.pdf

Now I just have to find a delaer (it is not the one they use to have in stock at the corner's e-shop)

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Old 19th March 2004, 06:15 AM   #13
hacknet is offline hacknet  Singapore
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yup. thats the normal problem. and unless you are ready to order a 1000pcs of a single value, i don`t think you will be able to get any of these quality resistors.
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Old 21st March 2004, 04:16 PM   #14
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Lightbulb Salomonic solution

While I try to find that resistor, I have decided to parallel 25 resistors 9k1, 5W each.
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Old 23rd March 2004, 06:06 PM   #15
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I have found a dealer for the Vishai resistor. The price is 275 Euro each !!! and the delivery time about 5 or 6 weeks. He he he he...

I believe that my tandem of resistors will do a very nice job.
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