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re: How could a pulse cap operate in TC?
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- Subject: re: How could a pulse cap operate in TC?
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Tue, 19 Jul 2005 08:19:10 -0600
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Original poster: "father dest" <dest@xxxxxxxxxxx>
hi Gerry.
> Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
> The dissipation factor is conductivity/(2*pi*f*permitivity) and
> however, is fairly constant over frequencies of interest
yes, just like i said before - "for good rf cap".
> > > Trise = Power dissapation (watts) * Thermal Impedance
> (degrees/watt)
> > > Power dissapation = Irms^2 * ESR_of_cap
> >ESR = dissipation factor / (2 * PI * F *C)
>
> ??? This doesn't sound right. CDE 942C20P15K caps (0.15uf) specifies
> a typical ESR of 5 milliohms
what? have you even try to calculate the numbers? i see that you don`t :-P
so go (for example) here:
http://hot-streamer.com/TeslaCoils/MMCInfo/942C.pdf
"ESR - Maximum value measured at 25?C, 100 KHz"
at 100 khz (2 * PI * F *C)=0,0942
DF~0.0005 for PP, so ESR=0,0053 ohm
what did you say - "This doesn't sound right"? :-P
> I believe Steve said that the dielectric loss was insignificant at our
> frequencies.
the question is not in "our frequencies", but in value of current!
it`s seems that no one here can explain it simply and clearly to me, so -
ok, just forget it :-)
---
Your not coiling unless your blowing capacitors! Then when you get things
worked out to where the capacitors stop blowing, you start blowing
transformers. (c) Richard Quick 11-03-93 20:42