Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "Zoran A. Scepanovic" <zastos@...>
To: "Leon Heller" <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, October 14, 2006 6:31 PM
Subject: Re: [Homebrew_PCBs] Mercury lamp for UV exposure


> Hello Leon,
>
> Friday, October 13, 2006, 11:47:42 AM, you wrote:
>
>> I've just bought a ballast to go with a mercury lamp I bought on Ebay.
>> I've
>> just connected them up and the lamp is working OK. I rather stupidly put
>> it
>> on the bed with a dressing gown over it to keep the cat away, smelt
>> burning
>> a few minutes later and found the lamp had burnt the duvet cover and the
>> dressing gown. 8-(
>
>> Next step is to remove the outer envelope and do some test exposures.
>> I'll
>> rig up a suitable box to keep the UV away from me.
>
>> Leon
>> --
>> Leon Heller, G1HSM
>> Suzuki SV1000S motorcycle
>> leon.heller@...
>> http://www.geocities.com/leon_heller
>
>
> PLEASE DO NOT BREAK THE OUTER GLASS!
>
> You will end up with lot of shortwave UV AKA UV-C. Photoresists are
> sensitive (peak) arround 340 nm AKA UV-A. Also with outer shell
> removed, you will generate lot of ozone (O3) which reacts with
> haemoglobine in your red blood cells and other cells that need
> oxygen can not use in 'cause it's not O2.
>
> UV-C can produce severe skin damage and is 'tethal' to your retina.
> Irreversible sight damage.

It will be mounted in a light-tight box.

Leon