Stacking Apple ][ stuff

From: Richard Erlacher <edick_at_idcomm.com>
Date: Tue Nov 6 00:11:14 2001

Most of 'em were computer-science grad's so they probably didn't experience
science/physics/math ... etc.

Those old monitors didn't have degaussing coils in 'em did they? I never notice
that obvious sound on 12" types.

I, of course, wasn't, since I always got pretty good grades in those courses.
However, I was never concerned with the ill effects of setting up an Apple in
the way the manufacturer (who apparently sold media, etc, as well) recommended.

Dick

----- Original Message -----
From: "John Lawson" <jpl15_at_panix.com>
To: <classiccmp_at_classiccmp.org>
Sent: Monday, November 05, 2001 10:43 PM
Subject: Re: Stacking Apple ][ stuff


>
>
> On Mon, 5 Nov 2001, Richard Erlacher wrote:
>
> > The monitor seems to interact with the drives when the monitor is turned on.
It
> > depends, I suppose, on the monitor, but I've got the IIe with the dual drive
box
> > between it and the color monitor and from time to time, e.g. when I turn on
the
> > monitor while the computer has been powered up but the monitor has been
powered
> > down, e.g. when I go upstairs to get a sandwich or answer the doorbell, the
> > drive runs up and the diskette is partially unreadable afterward.
>
>
> Can you say: "Automatic Power-On Degaussing Coils?"
>
> Click - BRRMMMMMMMmmmmm..... goodbye disk data!
>
>
>
> >
> > I'm told by more experienced Apple owners that it's a good idea to (a)
ground
> > the disk drive boxes in the case of the old aluminum-cased Apple][ drives
and
> > (b) put a sheet of grounded ferrous metal between the monitor and drives. I
> > don't know whether this helps, as I've simply stopped turning off the
monitor
> > when I go away.
>
> Aluminium = non-magnetic Iron = magnetic in terms of marginal
> shielding from external fields.
>
>
> >
> > Apparently one of the guys got a metal bracket of the sort sometimes used to
set
> > a printer off the desk, and set his monitor on it in order to lift the thing
up
> > so he didn't have to crane his neck down to see the display, and his
problems
> > with the disk drives were diminished, which caused him to investigate.
>
>
> Magnetic fields diminish as the square of the distance from the
> originating source.. so seperating the monitor will mitigate the problem,
> depending on the intensity of the field and the seperation distance.
>
>
>
> Question: Were *all* of youse guys asleep in science and/or physics? ;}
>
>
>
> Cheers
>
> Nikola Tesla
>
>
>
Received on Tue Nov 06 2001 - 00:11:14 GMT