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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: Sun, 17 Jul 2005 00:40:46 -0600
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Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
Original poster: "father dest" <dest@xxxxxxxxxxx>
capacitor temperature is determined by the power of heating loses in it -
right?
Trise = Power dissapation (watts) * Thermal Impedance (degrees/watt)
Power dissapation = Irms^2 * ESR_of_cap
this power is determined from reactive power & dissipation factor - it`s
their multiplication - right?
reactive power (at given current ratings) is proportional to the reactive
resistance of the cap - right?
No. Resistive power results in heating. Reactive power does not.
reactive resistance of the cap at 1 khz is 500 times more than at 500 khz
- right?
No. Reactive impedance yes, resistance no.
Resistance can change cause of skin effect but is not an issue at most TC
frequencies. Use the caps ESR spec.
Gerry R.