Searching \ for 'Beating a dead horse...' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: techref.massmind.org/techref/index.htm?key=beating+dead+horse
Search entire site for: 'Beating a dead horse...'.

Truncated match.
PICList Thread
'Beating a dead horse...'
1999\01\10@001857 by Scott Shidel...

flavicon
face
Sorry to get on thise subject again but...
I just bought one of those mega bright worklamps from Sears to use for
workin on the car.  It is a 150, 300, 500W lamp..pretty awesome eh?
anyhow it has a warning in the directions to leave the lens on or the UV
light is dangerous...
Now, the usual question..anyone know if it will erase a pic?
Be kinda sweet if I just stumbled into an eraser:)


-----------------------------------------------------------------------
               The Pinto Page:  http://www.eng.usf.edu/~shidel
                  Join the Ford Turbo Mailing List!
                 http://www.FindMail.com/list/turbo/
Scott
-71 Pinto, stock 2.3 turbo, 13.67@98, radials
       8.1@85 1/8th mile on slicks
-85 Merkur 13.764@98 on radials&3300lbs! Under $300 in mods!
------------------------------------------------------------------------

1999\01\10@075717 by Howard McGinnis

flavicon
face
At 12:19 AM 1/10/99 -0500, you wrote:
>anyhow it has a warning in the directions to leave the lens on or the UV
>light is dangerous...
>Now, the usual question..anyone know if it will erase a pic?
>Be kinda sweet if I just stumbled into an eraser:)
>

Along those lines, the US NRC issued an Information Notice IN97-82
documenting an inadvertent initiation of a Halon fire suppression system
caused by a camera flash affecting an uncovered EPROM - a copy can be found
on the NRC web site.

Howard
---------------------------------------------------------------------
Howard McGinnis                   Electronic Visions, Inc
spam_OUThmcginniTakeThisOuTspamdigital.net            1650 Barrett Drive
(407) 632-7530                      Rockledge FL 32955
FAX (407) 632-3396               http://ddi.digital.net/~hmcginni

1999\01\10@101417 by Morgan Olsson

picon face
At 00:19 1999-01-10 -0500, you wrote:
>Sorry to get on thise subject again but...
>I just bought one of those mega bright worklamps from Sears to use for
>workin on the car.  It is a 150, 300, 500W lamp..pretty awesome eh?
>anyhow it has a warning in the directions to leave the lens on or the UV
>light is dangerous...
>Now, the usual question..anyone know if it will erase a pic?
>Be kinda sweet if I just stumbled into an eraser:)

Most of the generated UV are close to visible.
I believe there is very little, if any, UV with energy high enough to erase
EEPROM.

But you can try and report...
Keep it close enough and you will erase the whole silicon!  ;)

I have tried to put a photo discharhe lamp directly on top of the EEPROM
window, working as a strobo for a night.  No result.

/Morgan


{Quote hidden}

       Morgan Olsson                   ph  +46(0)414 70741
       MORGANS REGLERTEKNIK            fax +46(0)414 70331
       H€LLEKS           (in A-Z letters: "HALLEKAS")
       SE-277 35 KIVIK, SWEDEN               .....mrtKILLspamspam@spam@iname.com
___________________________________________________________

1999\01\10@154817 by paulb

flavicon
face
Morgan Olsson wrote:

> I have tried to put a photo discharhe lamp directly on top of the
> EEPROM window, working as a strobo for a night.  No result.

 No surprise really - the tube is made of glass.  Now if you could
find one made of quartz...
--
 Cheers,
       Paul B.

1999\01\10@160923 by Peter L. Peres

picon face
On Mon, 11 Jan 1999, Paul B. Webster VK2BZC wrote:

> Morgan Olsson wrote:
>
> > I have tried to put a photo discharhe lamp directly on top of the
> > EEPROM window, working as a strobo for a night.  No result.
>
>   No surprise really - the tube is made of glass.  Now if you could
> find one made of quartz...

Uh, afaik, those EPROM eraser 'guns' use just that: a Mercury vapor
discharge tube made of quartz fired by a normal strobo circuit. afaik the
bulbs are made on special order for the manufacturers and can't be
obtained from anywhere else. Knowing the horrible things such a bulb could
do if misused in a disco strobe, I think it's good one can't buy them.

Peter

1999\01\10@182057 by dave vanhorn

flavicon
face
>Along those lines, the US NRC issued an Information Notice IN97-82
>documenting an inadvertent initiation of a Halon fire suppression system
>caused by a camera flash affecting an uncovered EPROM - a copy can be found
>on the NRC web site.


Another good reason to put a sticker on the window. (They probably banned
cameras. :)

1999\01\12@152120 by John Payson

flavicon
face
|Along those lines, the US NRC issued an Information Notice IN97-82
|documenting an inadvertent initiation of a Halon fire suppression system
|caused by a camera flash affecting an uncovered EPROM - a copy can be found
|on the NRC web site.

Many types of IC's will experience operational malfunction if
exposed to bright light, even if none of the light reaches into
the UV spectrum (e.g. a normal focused incandescent can cause
problems).  Although the required amount of light is higher than
would be ambient in normal circumstances, it's not all that great.

>From what I can tell, the light has two effects: [1] Memory cells
may fail to read as programmed even when they are, resulting in
errant program execution.  The overprogramming margin used will
probably affect a chip's light succeptibility (a really geeky
hacker could butn some MOVLW instructions with the operand bits
weakly programmed and use a PIC as a lightmeter!); [2] The amount
of current drawn by the PIC will increase with light intensity.
In most cases, the current draw increase will be negligible, but
devices which are to run for a long time from a battery should
probably have their window covered.

1999\01\13@121654 by Peter L. Peres

picon face
Hello,

> covering cerdip/w windows

FYI all those paper leaflets used to cover and mark the windows are worth
about their worth in case there is strong light to be kept out.

The only leaflets that don't do this are those with an unbroken metal
surface. This is paper or plastic clad zinc or aluminium foil. These are
expensive. This is the reason why I like the decorator's metallic tapes so
much for this purpose. In case of doubt a 3M aluminium tape can be used
imho (reel).

I have heard stories from light effect people about 8751s erased by the
lights they were driving in the same plastic box thru white paper labels
after 3-4 months etc. Never happened to me so far (but I do not do
volumes).

Peter

1999\01\13@185114 by Glenville T. Sawyer

flavicon
face
>Hello,
>
>> covering cerdip/w windows
>
>FYI all those paper leaflets used to cover and mark the windows are worth
>about their worth in case there is strong light to be kept out.
>much for this purpose. In case of doubt a 3M aluminium tape can be used
>imho (reel).
>
>I have heard stories from light effect people about 8751s erased by the
>lights they were driving in the same plastic box thru white paper labels
>after 3-4 months etc. Never happened to me so far (but I do not do
>volumes).
>
(snipped)

Well, if you can still FIND any, what I always used for covering the cerdip
windows, were the
Silver "tabs" that used to come with 51/4" floppy disks, you know the
things - you used to place them
across the R/W cutout on the side of the disk.

They had..

1) Good adhesive properties
2) Almost total light reflection
3) Cheap !!!

They may still be available somewhere in your area.

Regards,
                   Glenville T.  Sawyer.

More... (looser matching)
- Last day of these posts
- In 1999 , 2000 only
- Today
- New search...