(no subject)
Marinus Berghuis ( renkahu@ihug.co.nz )
Tue, 29 Dec 1998 12:04:39 +1300
>To: NickandSim@aol.com
>From: Marinus Berghuis <renkahu@ihug.co.nz>
>Subject: Re: Experience with odd effects.
>In-Reply-To: <830b4e1d.368775df@aol.com>
>
>At 07:13 28/12/98 EST, you wrote:
>>I think I may have a partial explanation for your burnt out transformer
>>I think that the rf current wouldn't have blown the small fuses very fast
>>because rf
>>is conducted around the outside of the conductor. With a single strand fuse
>>it will heating effect will be very localised around the outside of it.
This
>>will gradually evapourate the wire making it thinner. (when i say
gradually i
>>mean 0.5 seconds or so) Whereas the higher current fuses may have been
multi-
>>strand with much more surface area so a much shorter period before the fuse
>>blows when handeling rf.
>>As for the transformer the inductance of the secondary will be matched for
>>60hz
>>so for high frequencies it will effectively be a short.
>>I still cannot understand how you could generate a pulse within the time the
>>fuses would have held for powerful enough to blow the transformer.
>>
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