Re: Amp output Z

I read in sci.electronics.design that The Phantom <phantom@xxxxxxx> wrote (in <6sup5193h1jtbq6a33fms79b7t4de481km@xxxxxxx>) about 'Amp output Z', on Wed, 13 Apr 2005:

It looks to me as though the locus of possible output impedances is a circle with center at about 10+j47 and with a radius of about 24.

If there is no relative phase shift between E2A and E2B, the the solution is an output inpedance consisting of a 28.27 millihenry inductor in series with a 13.1078 ohm resistor. The reactance of that inductor just cancels the reactance of the 5.6 uF capacitor, and the 13.1078 ohm resistor provides the drop you see when you apply 300 and 600 ohm loads (the open circuit voltage would be 15.1335 volts).

The mind boggles! How on earth do you imagine you can generate an inductor from a circuit that has two resistors and a capacitor in series?
--
Regards, John Woodgate, OOO - Own Opinions Only.
There are two sides to every question, except
'What is a Moebius strip?'
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
.

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