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Re: High frequency impedance of a neon sign transformer
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To: tesla-at-grendel.objinc-dot-com
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Subject: Re: High frequency impedance of a neon sign transformer
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From: Scott Myers <scotty-at-wesnet-dot-com>
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Date: Tue, 09 Apr 1996 09:03:20 -0400
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Hello Jim and all,
On those measurements of neon and pole transformer impedance at several
frequencies.
First, thanks jim for compiling them into one list. However, the list was
a little jumbled on my end and seemed to be missing some data. Could you
please resend it to me?
I could make out enough of the data that I noted as the frequency rose above
1 kHz, the impedance began to drop fairly quickly in everyone's tests. This
is all that matters to me. It shows that at least a "T" filter arrangement
should be used to give a neon better protection. That will increase its
source impedance at operating frequency and keep the filter cap the easier
path to ground. If a person were trying to build a "permanent" neon power
supply, a multiple "T" arrangement could be utilized in an attempt to
remove as much RF as possible. Of couse this would introduce more filter
resonances that would have to be dampened.....
Scotty