Dennis,
That's happened several times, even comments on here about it. The last one was
a good while back about a Henry, and the guy posted some pics of the choke. If
I remember, myself and maybe Rich Measures did a post to the guy about adding
or taking away a few turns. Look back in the archives and you should find it.
Also, you might do a search on the net about that as I've seen it before, same
model amp. Not all Henrys' did that, just that one model and I cant remember
which one it was. Seems to me though it used glass tubes but whether they're
3-500Z's or not I cant remember. I know the one amp with the pics showed the
parasitic suppressors with long hair-pin type coils instead of wrapped around
the resistors. However this wasn't done by Henry, but by an owner. The plate
choke on this amp and the others I'd seen, the top few turns burnt and the cure
was to remove a few turns if I recall. I dont think I ever remember the whole
choke burning on this one or the others. Why it only
burnt the top few turns, I dont know.
Best,
Will
*********** REPLY SEPARATOR ***********
On 8/26/05 at 12:43 PM Dennis12Amplify@aol.com wrote:
>In a message dated 8/26/05 10:16:38 A.M. Central Daylight Time,
>craxd1@verizon.net writes:
>
>There have been mis-designed chokes used before too! I have heard of some
>in
>some Henry amps where the few top turns would burn out. That was over SR
>and
>was cured by subtracting a few turns off the old choke.
>
>Best,
>
>Will
>
>
>
>- How would that be possible?
>
>- If the choke series resonated, wouldn't the entire choke be overloaded?
>
>- Wouldn't the closer spaced turns get much hotter than the wide spaced
>turns?
>
>- I guess if you were using some sort of a 'tapped' choke such a thing
>may
>be possible....but I have never seen one in a Henry.....
>
>- The only other possibility I can think of is if that part of the choke
>BELOW the wide spaced turns series resonated as a SEPARATE element.
>
>- Regards,
>
>- Dennis O.
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