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Subject: Re: [Homebrew_PCBs] Re: UV Light Source for Exposing PCB's

From: "Zoran A. Scepanovic" <zasto@...>
Date: 2002-04-04

Hello crankorgan,

Thursday, April 04, 2002, 2:57:25 PM, you wrote:

c> Hi,
c> Years ago I tried to locate a UV light to erase Eproms. I
c> got alot of bad info. The Blacklight for posters is not
c> the right wavelength. UV bulbs look like a clear florescent
c> light bulb. They used to come with a drop of mercury in them. After
c> trying to buy one, I found one in a Tropical Fish store. They
c> are used in a Sterilizer. Water passes past the bulb and the
c> germs in the water are killed. Do not look at the light while
c> it is on!!! It may look like it is not bright but it can give
c> you welders flash! You will wake up 2 o'clock in the morning with
c> the feeling sand is in your eyes. Be careful!

c> John

And I replied:

And much worse things can happen if your tiny grey cells are on vacation:

A nurse in one hospital thaught that she could gain some sun-tan under the
germicidal lamp, so she went to a room where some of the laundry was
stored and layed down for about half hour, intremittantly observing the
'not so intense' blue light which in fact is almost pure UV-C (peak for
germicidal lamps is arround 237nm - ideal for UV-EPROM erasing).
She was severe burnt and her staring to the lamp gaved her 60% sight loss
(permanent).

--
Best Regards,
Zoran A. Scepanovic
mailto:zasto@...
http://zasto.bizhosting.com