Remember a lot of the mil stuff in the air is running at 400 Hz. Also the
environmental
testing may have been harder to pass with EI transformers. Maybe C cores
don't need to be potted to pas humidity tests. How about vibration testing
with a core having many layers
floating on 4 studs? gfz
-----Original Message-----
From: G3rzp@aol.com [mailto:G3rzp@aol.com]
Sent: Monday, April 18, 2005 2:05 PM
To: craxd1@ezwv.com; amps@contesting.com
Subject: Re: [Amps] Hipersil, the myth and the truth. (Updated)
Will,
Can you think of a reason why, at least over here, the military especially
seemed for many years to go for C cores rather than the conventional E and
I?
C cored transformers were always more expensive, and I'm told that a lot of
mil gear was bought scrap for the transformers - saw up the windings,
retrieve
the copper, and carefully keep and resell the pairs of C cores.
Come a long way froma bundle of iron wires dipped in varnish to make your
own intervalve audio transformer!
73
Peter G3RZP
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