Apple IIe Motherboard X-Ray

I posted this to CSA2 today.  I figured you guys would want
to download 
these files.  If you're anything like me, then you're a
digital pack rat.  ; )

In preparation for cutting my Apple IIe motherboard in half
I decided
it would help to have an x-ray of the board.  This way it
will be easy
to determine the most efficient cut line.

I've included an X-Ray of a Disk II card just for fun.

The X-Rays are at 300dpi.  I'm not an X-Ray tech so my
calibration was
a little off.  Our resident X-ray guy is gone today.  I'm
not sure he
would be interested in an Apple IIe motherboard any way.  ;
)  Some
areas are dark.  By adjusting "Levels" in
photoshop you can bring them
out.

The motherboard received a dose rate of 17.84 R/min for the
scans and
calibration.  About 27 minutes (for 3 scans and a
calibration).  This
would have been a dose of 482 Rad.

The Disk II card received the same dose rate, but it was in
the vault
for the whole time the motherboard was in there.  It
received radiation
for a total of about 32 minutes.  571 Rad.

To put it in perspective, if a group of people were exposed
to that
dose 50-90% would die after 30 days.  (90% without intensive
medical
care).  Primary cause of death is internal bleeding and
infections.
Females become permanently sterile.

Motherboard:
http://www.stockly.com/images2/06
1228-Apple_II_80kv6ma35ms36SFD-Cut%20Edges.jpg

Disk II:
http://www.stockly.com/images2/061
228-Disk_II_80kv6ma35ms36SFD-Cut%20Edges.jpg

Any comments?

Grant 

>>>> cutting my Apple IIe motherboard in half

Why? 



-----Original Message-----
From: Grant Stockly [mailto:grantstockly.com] 
Sent: Thursday, December 28, 2006 6:23 PM
To: cctalkclassiccmp.org; cctechclassiccmp.org
Subject: Apple IIe Motherboard X-Ray

I posted this to CSA2 today.  I figured you guys would want
to download
these files.  If you're anything like me, then you're a
digital pack rat.  ;
)

In preparation for cutting my Apple IIe motherboard in half
I decided it
would help to have an x-ray of the board.  This way it will
be easy to
determine the most efficient cut line.

I've included an X-Ray of a Disk II card just for fun.

The X-Rays are at 300dpi.  I'm not an X-Ray tech so my
calibration was a
little off.  Our resident X-ray guy is gone today.  I'm not
sure he would be
interested in an Apple IIe motherboard any way.  ; )  Some
areas are dark.
By adjusting "Levels" in photoshop you can bring
them out.

The motherboard received a dose rate of 17.84 R/min for the
scans and
calibration.  About 27 minutes (for 3 scans and a
calibration).  This would
have been a dose of 482 Rad.

The Disk II card received the same dose rate, but it was in
the vault for
the whole time the motherboard was in there.  It received
radiation for a
total of about 32 minutes.  571 Rad.

To put it in perspective, if a group of people were exposed
to that dose
50-90% would die after 30 days.  (90% without intensive
medical care).
Primary cause of death is internal bleeding and infections.
Females become permanently sterile.

Motherboard:
http://www.stockly.com/images2/06122
8-Apple_II_80kv6ma35ms36SFD-Cut%20Edges.
jpg

Disk II:
http://www.stockly.com/images2/06122
8-Disk_II_80kv6ma35ms36SFD-Cut%20Edges.j
pg

Any comments?

Grant 

Wow - that is _really_ cool. I wish I had access to an
X-ray machine - it certainally would make reverse
engineering/repairing boards a lot easier. Although I
wonder what a complicated multilayer board would look
like. Probably unintelligible, but then again, the
hardware we all work with doesn't have complicated
multilayer boards.

Way cool.

-Ian

On Thu, 28 Dec 2006, Grant Stockly wrote:

> Any comments?

What does that sort of radiation do to chips?

-- 
David Griffith
dgriffics.csubak.edu

A: Because it fouls the order in which people normally read
text.
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