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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: EDHARRIS-at-MPS.OHIO-STATE.EDU
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Date: Thu, 04 Apr 1996 13:43:11 -0500 (EST)
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>Received: from phyas1.mps.ohio-state.edu (phyas1.mps.ohio-state.edu [128.146.37.10]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with ESMTP id LAA09512 for <tesla-at-grendel.objinc.COM>; Thu, 4 Apr 1996 11:44:18 -0700
Jim Fosse wrote:
applied measured Z
--------------------------------------------------------------------------------
60 hz 1Vrms 0.68Vrms 4.7K
100hz 1V 0.6V 6.67K
1Khz 1V 0.18V 45.6K
10Khz 1V 0.1V 90K
100Khz 1V 0.2v 40K
Please, do note the rise in voltage between 10K and 100K, I measured
the self resonance frequency at 33.646KHz with a 10K ohm resistor and
at 34.559KHz with a 100K ohm resistor. Also note that when we go from
100 Hz to 1KHz the impedance go from 6.67K to 45.6K instead of 66.7K!
Likewise from 1KHz to 10KHz we only get a 2:1 Z increase. It then
drops above the self resonance freq.