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Capacitors in Computers

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    #21
    Re: Capacitors in Computers

    Good information but quite a strainer to the eyes. Can the OP change the font or size to something legible?

    Thank you.

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      #22
      Re: Capacitors in Computers

      Thanks for information...

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        #23
        Re: Capacitors in Computers

        Originally posted by davmax View Post
        I just realised I had fallen into a small trap. We have been so busy talking about the ESL effect that it was forgottem the ESL is a value of inductance, not impedance that is correctly termed reactance Xl.

        So the impedance Z of a capacitor is a composite of R (ESR) + Xl + Xc

        Xl = 2Pi x f x L where f =frequency and L =inductance

        ESL is an inductance.

        It should also be realised that the values of Xc and Xl do not add directly to R because each is effectively 90 degres out of phase with the value represented by R (ESR). Xc lags and Xl leads so they are in fact opposing values. One will subtract from the other. At a resonant frequency Xc = Xl so they cancel out leaving only ESR and the lower the value of ESR the higher the Q value and the more ringing or damped oscillation.

        Thanks for this

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