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

I was afraid of that....
I suspect the "Lights of America" fixtures use an electronic ballast
instead of an inductor/transformer/standard ballast and no filtering
to keep the RF junk out of the AC line. Not good.

Anyway, end of this thread.

Charlie

On Fri, 22 Feb 2013 08:37:55 -0700 "Rick Sparber" <rgsparber@...>
writes:

I suspect it generates as much RFI as any fluorescent fixture. I use it
in
my shop which has 1 KW of fluorescent fixtures. They make it near
impossible
to play a radio. Fortunately, I don't listen to radio in my shop.

Rick

-----Original Message-----
From: Homebrew_PCBs@yahoogroups.com
[mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of Missouri Guy
Sent: Friday, February 22, 2013 8:21 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] DIY pcb exposure box UV tl

Just outta curiosity, does that Lights of America fixture produce RFI?
(I.e., radio interferrence).

Thanks,
Charlie

On Fri, 22 Feb 2013 07:06:52 -0700 "Rick Sparber" rgsparber@...>
writes:

Hari,

VERY fancy exposure box.

Being a minimalist, I bought two of these

http://www.walmart.com/ip/Lights-of-America-24-Fluorescent-Blacklight-Fix
tur
e/16879944

for about $12 each including tax. I bolted a thin bar across the top of
each
side to yoke the two fixtures together. Then I put the assembly on 2.5"
tall
spacers. Works fine for me. I expose my pre-coated boards for 8 minutes,
develop in under 20 seconds, and etch in warm ferric chloride in under 10
minutes.

Rick

-----Original Message-----
From: Homebrew_PCBs@yahoogroups.com
[mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of Hari Hendaryanto
Sent: Friday, February 22, 2013 6:48 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] DIY pcb exposure box UV tl

hi guys,

just to make sure i'm on the right track, while i'm waiting for my dry
film,
i wanna ask some favour. i'm deploying compact PCB uv exposure box ( not
100% done yet) . as you can see in this url.

http://img17.imageshack.us/img17/4035/tebet2013022200232.jpg

is the UV lamp i'm using the right type. i bought cheap (~ $3 each) 2 UV
lamps from local hardware/electrical store. it doesn't have any technical
specification,.just black light tube.

thanks in advance

regards

hari

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Be sure to visit the group home and check for new Links, Files, and
Photos:
http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links




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