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Article #2296Re: Supply for LV lighting application?
From: Russ
Date: Tue, 18 Mar 2003 05:06
Date: Tue, 18 Mar 2003 05:06
63 lines
4557 bytes
4557 bytes
"Keith R. Williams" <krw@attglobal.net> wrote in message news:MPG.18e057bb6c6d0d0598a157@enews.newsguy.com... > In article <83b18a95.0303171038.54359a6a@posting.google.com>, > manifold_1@yahoo.com says... > > Ian Stirling <root@mauve.demon.co.uk> wrote in message news:<b54qdc$4h4$4$8300dec7@news.demon.co.uk>... > > > In sci.electronics.misc DaveC <anon@bugus.net> wrote: > > > > 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. > > > <snip> > > > 30 lamps at 50W is 1500W. > > > Or ~$500/year. > > > > > > I'd ask what they mean by 'too harsh', and perhaps look into the large number > > > of colours of fluorescnts avaialble. > > > > > > Maybe something as simple as a paint job might help. > > > > > > Bare bulb QH lighting is very nice to look at but there is an > > interesting effect that happens with exposed bulbs in QH lighting. The > > eye adjusts to the intensity of light coming from the bare bulb and > > makes the rest of the room look dark. So then you have to get more > > lamps and before you know it you are negotiating your own rates with > > the power supplier. > > Perhaps for bare-bulbs, but I've replaced almost all my home's > lighting with QH and love it. I have torchieres in the living > and family rooms, reflectors in the kitchen and hall, and spots > in the bedroom and computer room. I love the crisp white light. > > I noticed a bar/restaurant up in the sticks that had a system > quote like what the OP wants. They had fixtures hanging from > stainless wires 6' or so over the tables. I quite liked the > effect. That's called a "trapeze" system - they have been very popular for commercial installations for the last 6-8 years or so (in Australia & Europe at least, I haven't seen so many in America in my travels.) > > We recently made our own lamps because everything on the market was > > either really ugly or really expensive and commonly both at the same > > time. We replaced 150W of QH lighting with 55W of folded fluorescent > > lights (the type that IKEA sells) in diffusive fixtures and the > > results were dramatic. More light, less glare and less energy used. > > The down side is that they can't be dimmed. > > I can't stand any CF lights I've seen. The color is never right > (as in I'm ill) and the flicker drives me bats. We don't light > the house brightly (other than the kitchen) and use spot QHs for > reading. QH lights give quite a beautiful light - I think it's a combination of the small point source giving nice specular reflections and the dichroic reflector which imparts a unique quality to colour of the light. QH's are horribly inefficient compared to fluorescents, but sometimes aesthetics override economics... Russ.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,bb2f1d6cc718187b X-Google-Attributes: gid112d1e,public X-Google-Thread: 103407,bb2f1d6cc718187b X-Google-Attributes: gid103407,public X-Google-Thread: 10d137,bb2f1d6cc718187b X-Google-Attributes: gid10d137,public X-Google-Thread: 107cee,bb2f1d6cc718187b X-Google-Attributes: gid107cee,public X-Google-ArrivalTime: 2003-03-17 21:01:55 PST From: "Russ" <russell@remove.thehovel.net> Newsgroups: sci.electronics.design,sci.electronics.misc,alt.engineering.electrical,aus.electronics Subject: Re: Supply for LV lighting application? Date: Tue, 18 Mar 2003 16:06:12 +1100 Organization: Web One Internet http://webone.com.au Lines: 65 Message-ID: <3e76a842@iridium.webone.com.au> References: <0001HW.BA977EAD001869E90E6B7920@news.covad.net> <b54qdc$4h4$4$8300dec7@news.demon.co.uk> <83b18a95.0303171038.54359a6a@posting.google.com> <MPG.18e057bb6c6d0d0598a157@enews.newsguy.com> NNTP-Posting-Host: iridium.webone.com.au X-Trace: merki.connect.com.au 1047963714 3195 203.30.194.14 (18 Mar 2003 05:01:54 GMT) X-Complaints-To: abuse@connect.com.au NNTP-Posting-Date: 18 Mar 2003 05:01:54 GMT X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Original-NNTP-Posting-Host: dial-ctt02-140.webone.com.au X-Original-Trace: 18 Mar 2003 16:01:54 +1000, dial-ctt02-140.webone.com.au Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!nntp.cs.ubc.ca!nntp-relay.ihug.net!ihug.co.nz!usenet.net.nz!news.iprolink.co.nz!news.syd.connect.com.au!iridium.webone.com.au