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*To*: tesla@xxxxxxxxxx*Subject*: Re: MOT Testing*From*: "Tesla list" <tesla@xxxxxxxxxx>*Date*: Tue, 26 Apr 2005 09:35:14 -0600*Delivered-to*: testla@pupman.com*Delivered-to*: tesla@pupman.com*Old-return-path*: <teslalist@twfpowerelectronics.com>*Resent-date*: Tue, 26 Apr 2005 09:36:44 -0600 (MDT)*Resent-from*: tesla@xxxxxxxxxx*Resent-message-id*: <fBeQPD.A.2k.IAmbCB@poodle>*Resent-sender*: tesla-request@xxxxxxxxxx

Original poster: Steve Conner <steve.conner@xxxxxxxxxxx>

I saw that business about Z^2=Z1^2+Z2^2+Z3^2+... and I don't know where this came from.

It's used when you are adding complex impedances which is kind of like adding apples to oranges. Except in the strange world of electrical engineering math, one apple plus one orange does not add up to "two fruit".

If you put two 1 ohm inductors in series the result is 2 ohms of "inductive reactance".

BUT

P.S. I can't remember who brought this topic up. But the reason why the voltages across your HV transformer primary and your ballast choke don't add up to the line voltage is also to do with this complex impedance business. If you measured the magnitude and phase angle of each voltage and added them with complex arithmetic, it would all work out. Well if they were sine waves it would, but they are usually crazy waveforms so it would still be wrong.

Steve Conner

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