🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: sci.electronics.design
Article #2296

Re: Supply for LV lighting application?

#2296
From: Russ
Date: Tue, 18 Mar 2003 05:06
63 lines
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.
Technical Details
Message-ID: <3e76a842@iridium.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
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>

Show Full Headers
Complete Article Headers
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