[AMPS] switches

[carl seyersdahl]

 Just got back from a hamfest, folks!!  Phil, VA3UX seems to be the only one
that understood my question correctly. both switches do the same thing so
what's the electrical difference. if any in the use of switch or the other.
carl / kz5ca
----- Original Message -----
From: "Bob & Linda McGraw K4TAX" <RMcGraw@InfoAve.Net>
To: "Phil VA3UX" <phil@vaxxine.com>
Cc: "carl seyersdahl" <carlseye@tampabay.rr.com>; "amps"
<amps@contesting.com>
Sent: Saturday, February 10, 2001 12:13 AM
Subject: Re: [AMPS] switches


>
> Phil:  I agree.
>
> Anyway, as I understand things, it's best to short the un-used turns out
> to prevent a high EMF on un-terminated taps and thus causing a
> flash-over or arc in the bandswitch.  At the same time, I figured out
> that by doing so, shorting the turns, this created a "shorted turn"
> situation and some lost energy and heating would result.  I guess it
> makes a difference which end is shorted.  Short from the output to the
> input side of the coil or from the plate end toward the output.
>
> I'm sure someone can straighten me out on this.
>
> 73
> Bob K4TAX
>
> Phil VA3UX wrote:
> >
> > Tom, if I read Carl's original question properly, I think he was asking
'
> > what is the electrical purpose of choosing a progressively shorting
switch
> > over one that isn't'.  Carl : yes/no ?
> >
> > Phil
> >
> > At 08:39 PM 2/9/2001 -0500, carl seyersdahl wrote:
> > >
> > >Tom: I've called many parts by the wrong names over the years, I guess.
I
> > >was referring ,I guess, to the progressively shorting switch seen in so
many
> > >amps today, as opposed to what I've seen in many construction articles,
> > >where they use what I would call a "break before make " type. Both
types do
> > >essentially the same thing, IE. progressively shorting the tank coil
turns.
> > >Other than the area of the switch contacts, I can't see much difference
in
> > >the two setups although there might be some electronic reasoning behind
> > >them!!  carl / kz5ca
> > >
> > >
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