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5/14/2019 3:17:52 PM
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Re: Carbon Film? Carbon Comp!
@didymus7---thanks for that added information---what is your application?

5/14/2019 2:10:20 PM
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Carbon Film? Carbon Comp!
Admittedly, our application might be different from what is viewed in this article.  We deal with very low repetition capacitive discharges of 1000-1300 Volts.  We have found that using carbon film resistors as a load will begin to deteriorate at the first pulse.  Our loads are typically 0.5 to 5.1 ohms so the peak current is high, 1200 to 2200 amps.  What actaully survives are Carbon Comp resistors, which do not apparently deteriorate at all.  By deteriorate, I mean that the resistance begins to climb/get larger.  A 3 ohm carbon film resistor will actually be 4.5 ohms after the first discharge. And yes, we do have to use thru-hole resistors.


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There’s a further cool thing you can do with a spreadsheet that most SPICEs can’t. That’s to use the spreadsheet ‘solver’ functionality to adjust component values in the search for a better-fitting circuit – or even to find a set of component values for a circuit you can’t otherwise design.
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As a member of the electronics design community, I am angry and disappointed with the recent deaths of 346 people due to the Boeing MAX 8 design
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