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'[EE]: UV Light box'
2002\06\10@052209 by sambuddy

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Has any body made their own UV light box? Anyone want to share their experiences?
Regards
Stuart

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2002\06\10@055816 by Amaury Jacquot

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Quoting Stuart O'Reilly <.....sambuddyKILLspamspam@spam@optushome.com.au>:

> Has any body made their own UV light box? Anyone want to share their
> experiences?
> Regards
> Stuart
>
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>

The tubes I can get are 46 cm long. with the tube connectors, this makes the
thing about 48 cm. my box is made with 1 cm plywood, dimensions are 50*15*35.
The whole thing is glued together. The tube equipment is glued in place
(transformers in the bottom, connector with starter on the sides).
The tube is at 4.5 cm from the top of the box.
Then the 4mm pane of glass is held with aluminum L - shaped bars that are glued
on the side.

Took me about 2 days (including waiting time for the glue to cure.)

Amaury

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2002\06\10@061654 by Jonathan Starr

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[Message appeared to have bounced, can't really tell with this mail client, apologies if you get two]

I made my own box a while back, I bought 'replacement' UV tubes and starters out of Farnell and a standard 16W? (I can't remember now, but double what a single tube is anyway as you'll be running two off it) ballast.
I made a nice little PIC timer with a single starburst LED display (minutes), I used a 16C505 and output the LED data serialy onto a CMOS shift register at 4KHz, (A bit of a kludge but I didn't have any 'internal logic' LED displays in my junk box, and anyway it worked :).

I made the box out of mild steel, and the reflector out of polished aluminium:

|  |                                   |  |
|  \   { }                 { }     /   |
|    \______________/     |
|____|_|________|_|_____|

Apologies for the ASCII art, as Rolf would say 'Can you tell what it is yet?' but hopefully you can see the internal construction.

DON'T use perspex for the platern !
I tried to, it glows blue and seems to absorb a lot of UV, the boards had weak areas as well.
Your local builders center can (or should be able to, both mine could) cut you glass for practicaly nothing, I'd also advise staying away from 'agricultural glass' although I didn't try it.

And finaly I used a sheet of 3mm steel with foam dyed black stuck to it as a lid, make sure you leave internal room for hinge bolts and the lid clip studs......I didn't and had to stick them on with epoxy.

It may have been ugly but it saved me £100 on buying one from Farnell and it worked great, 4 mins exposure did a board nicely with no weak areas.

Good luck with yours :)

Jonathan Starr

>Has any body made their own UV light box? Anyone want to share their >experiences?
>Regards
>Stuart
>
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2002\06\10@091346 by A.J. Tufgar

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A good lamp source is actually home depot.  They sell 2ft. philips uv
bulbs that output 4W of UV light for the 20W light.  A couple of these
would probably do.  $20 CAD.

http://www.lighting.philips.com/nam/product_database/special/displayspecial.php?id=39

Aaron

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2002\06\11@081600 by Roman Black

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Stuart O'Reilly wrote:
>
> Has any body made their own UV light box? Anyone want to share their experiences?


Hi Stuart, I saw you are in Aust too, you can get a
5 inch UVC tube from altronics/jaycar for about $25
AUD, and here is a 240vac driver circuit that you can
make with two caps and resistors:

http://www.romanblack.com/tube4w.htm

I have this setup and it works great, always starts
and erases PICs in about 4 minutes although I usually
give them 6. :o)
-Roman

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