🚀 go-pugleaf

In article <0001HW.BA977EAD001869E90E6B7920@news.covad.net>, 
anon@bugus.net mentioned...
> I've been asked to help light a small office building hallway. The 
> fluorescent lamps are way too harsh for the office workers, and the tenants 
> favor the overhead QH approach. 
> 
> I've looked at the local home centers' lighting departments and see quite a 
> selection of LV systems using overhead steel cable with 3 hanging reflector 
> bulbs (with a choice of trim, or not) tapped in at appropriate intervals. 
> 
> Price for the above from $70-100us. 
> 
> Being encouraged by what I saw, I decided to see what I could build from 
> scratch. 
> 
> As you probably can guess, I'm running into current supply/demand 
> limitations. Each of the 2 hallways could use about 15 lamps. Lamps are 
> available in 20 and 50w versions, which at 12v, draw approximately 1.7a and 
> 4.2a, respectively. I now see why the cost of such a system is mostly for the 
> supply. 
> 
> Looking for a ready-made 12v supply, I find this at Jameco for $70us that 
> provides 12.5a:
> 
> <http://www.jameco.com/cgi-
> bin/ncommerce3/ExecMacro/Jameco/searchResult.d2w/report?sort=BPA&search=123422
> >
> 
> This would allow me to run 7 of the 20w lamps, or only 2 of the 50w lamps. 
> 
> I can't see buying 2 supplies to run the 15 (well, I guess we could rev that 
> to 14) lamps in each hall. I seem to be butting up against Ohm's Law. 
> 
> Maybe build a simple, unreg'd, analog power supply with massive transformer 
> and rectifiers for 30A? 

There is no need to rectify the Ac for a regular incandescent light.  
The hardware store should have a supply (actually just a transformer) 
for the Malibu LV lighting systems used in gardens, pools. etc.  They 
handle a dozen lights, or more if you get the bigger models. Here's a 
URL: http://www.yardsupply.com/star/prodpages/light.htm#kits  Click on 
transformers and timers.



> Any other ideas (or links to sites) to help me reach a solution would be 
> greatly appreciated. 
> 
> Thanks,
> 

-- 
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
My email address is whitelisted.  *All* email sent to it 
goes directly to the trash unless you put NOSPAM in the 
Subject: line.  alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers.  Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com  You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@