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[TowerTalk] 110 Vac up a tower

To: <>
Subject: [TowerTalk] 110 Vac up a tower
From: \"Dick Green\"."< ("Dick Green".)
Date: Tue, 2 Dec 1997 13:38:41 -0500
That's an interesting idea that should work in theory. I haven't dissected
the motor/limit switch circuitry in the tower relay box yet, so I don't know
exactly how it works. I suppose the limit switches are normally open and
feed 110VAC to cutoff relays when actuated. OTOH, they could be normally
closed and the motor supply runs through them until they are actuated (but
it's hard to believe that they would send the high-current motor supply up
the tower and through the limit switches.) Ever since I decided to get this
tower, I've been wondering what would happen if one of the limit switches
failed. Does anybody know?

In any case, as long as it's just a relay voltage, I guess it could be
converted from 110V to 24VAC, then back again, by a pair of transformers in
the tower-mounted relay cabinet. It would just be a matter of making sure
the transformers can handle the relay current. I still need my relay board
to eliminate the 110VAC in the conduit, but this would eliminate 110VAC up
the tower. I'll look into it (of course, I'd test that with the DOWN lomit
switch first...)

73, Dick, WC1M

-----Original Message-----
From: Mike.Walker. <>
To: <>
To: <>
Date: Tuesday, December 02, 1997 10:40 AM
Subject: Re: [TowerTalk] 110 Vac up a tower

>As a thought, why not convert the 110ac to it up the tower and
>then convert it back to 110 ac if you really require this voltage for the
>relays?  This way, you also limit the amount of current availabe by the
>size of the transformers used.  All you need is 2 110/24 transformers.
>Mike  VA3MW

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