Re: Displacement Current Revisited

• To: tesla-at-pupman-dot-com
• Subject: Re: Displacement Current Revisited
• From: Bryan Kaufman <bryan-at-apexrad-dot-com> (by way of Terry Fritz <twf-at-verinet-dot-com>)
• Date: Thu, 25 Mar 1999 23:04:24 -0700
• Approved: twf-at-verinet-dot-com

Is this for DC coils or do AC coils have a "rectifier" effect?

Bryan Kaufman
> 
> Original Poster: rwall-at-ix-dot-netcom-dot-com
> 
> John,
> 
> I suspect that your "near field" is just composed of the concentric magnetic
> "fields" of the DC current flowing in the TC as opposed to the EM field.  If
> a wire with a few milliamps DC flowing through it is approached with a cheap
> compass the concentric magnetic fields are readily appearant.  Turn your TC
> horizontally and approach the side of the coil with a compass on the end of
> a long insulated pole.  The compass should align itself with the longitudnal
> axis of the coil confirming that it's the concentric magnetic fields of the
> DC current in the TC.  As an aside, the electric "fields" of the DC current
> should radiate radially at right angles to the longitudnal axis of the TC.
> 
> BTW, the compass should be an easy way to establish the overall polarity of
> DC current in a TC.
> 
> R. Wall

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