Re: Why Can't I Use a Static Gap?

• To: tesla-at-pupman-dot-com
• Subject: Re: Why Can't I Use a Static Gap?
• From: "Jim Lux" <jimlux-at-jpl.nasa.gov> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sat, 02 Oct 1999 08:18:21 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

>I've since switched to a home-built reactor, made of rebar and #10 AWG
wire.
>This unit is not adjustable (any more than my welder was) but does have
>various tap points, giving me currents ranging from 8 to 32 amps, measured
>short-circut across my variac. This is at 240V. Crazy as it sounds
>the coil is acting far more stable with this new inductor, despite the fact
>that I have to water-cool the core.


Probably because the rebar is pretty lossy as a core (compared to
transformer steel) (which is why you have to cool it), and the resistance
acts to damp the oscillations, much like adding a resistive ballast.

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