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Re: How could a pulse cap operate in TC?



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.