Re: Power supply current (fwd)

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Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Tue, 15 May 2007 11:37:06 +0800
From: Peter Terren <pterren@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Power supply current (fwd)

A couple of possibilities spring to mind. Firstly the power factor changes 
with the capacitors in your supply.  Wall plug watts are not equal to RMS 
watts. Secondly the switching of the load gives hash which is picked up and 
gives an irregular reading.  I find it hard to get a stable reading with a 
TC and don't trust the meters too much.

TDU

> ---------- Forwarded message ----------
> Date: Mon, 14 May 2007 20:35:08 -0400
> From: "Breneman, Chris" <brenemanc@xxxxxxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Power supply current
> While I was operating my coil the other day, I noticed something
> interesting.  With the power supply leads shorted out, it draws quite a
> bit less current than with the whole Tesla coil connected.  Does anyone
> know why this is?  The tank capacitor isn't even near the resonant value.
> I think it may have something to do with the voltage doubler in the power
> supply - it consists of two MOTs and a doubler circuit.
>
> Thanks,
> Chris