Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Default LIFI Plasma lamps. Was: Light bulb power saver (and now the rest of the story)



"msg" wrote in message
news:CN-dnbOPDIgM3GfanZ2dnUVZ_tyknZ2d@cpinternet...
default wrote:

A Tic-Tac-sized lightbulb that gives off as much light as a
streetlamp may offer a peek at the ultra-efficient lighting of the
future. The bulb, developed by Luxim of Sunnyvale, California, uses
plasma technology to achieve its brightness.


This paper describes the lamp and technology in greater detail:
http://www.lifi.com/pdfs/ArticleSID2007LUXIM-8Mar07.pdf

The operating frequency range is described, but the commercially
realized product frequencies are not disclosed.

RFI from these devices may be significant; an FCC type acceptance
would provide more data, but unfortunately most self-certified
products now lack online reference data (more research needed
for this product).

Anyone here that encounters HDTVs that include this device are
encouraged to do a spectrum sweep if you have the gear.

Michael


That sounds like an interesting adaptation of the concept used in the
previously mentioned sulphur lamp.

The RFI can be shielded, the Philips QL induction lamp is RF excited and
manages to emit very little leakage. I have a 165W example I experimented
with and could detect nothing more than a few inches from the bulb. I forget
what frequency they operate at, but IIRC it was several MHz.


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Default LIFI Plasma lamps. Was: Light bulb power saver (and now the restof the story)

default wrote:

A Tic-Tac-sized lightbulb that gives off as much light as a
streetlamp may offer a peek at the ultra-efficient lighting of the
future. The bulb, developed by Luxim of Sunnyvale, California, uses
plasma technology to achieve its brightness.


This paper describes the lamp and technology in greater detail:
http://www.lifi.com/pdfs/ArticleSID2007LUXIM-8Mar07.pdf

The operating frequency range is described, but the commercially
realized product frequencies are not disclosed.

RFI from these devices may be significant; an FCC type acceptance
would provide more data, but unfortunately most self-certified
products now lack online reference data (more research needed
for this product).

Anyone here that encounters HDTVs that include this device are
encouraged to do a spectrum sweep if you have the gear.

Michael

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Default LIFI Plasma lamps. Was: Light bulb power saver (and nowthe...

General Electric is working on some new improved more efficient
incandescent light bulbs.They might be on the market place some day.

Every time I go to the Wal Mart store, (food shopping, mostly, I going
over there tomorrow morning) I buy two or three packs of G.E.Reveal
incandescent light bulbs and I put them on a top shelf in one of my
closets.I want to build up at least a five years supply of them.Is that
light hoarding? I dont care if it is, I dont want to run out of my
favorite kind of light bulbs.
cuhulin

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Default Light bulb power saver (and now the rest of the story)


On 07 Apr 2008 15:56:10 GMT, Roger Blake
wrote:

In article , default wrote:
I was (over) reacting to Blake's idea of filling one's basement with
incandescent bulbs - allowing for a certain amount of hyperbole: a


I don't see any problem in stocking up on the light bulbs that I prefer
while they are still available, and see no reason to change. Of course
if you don't want to use standard incandescent bulbs that is your own
affair, but I am sticking with them and am laying in a long-term supply.


By all means. I think if incandescent lamps go completely out of
production there will still be people willing to pay a premium to get
them and you could be sitting on a gold mine in 30-50 years.

Will they go out of production? Other than government mandates, are
there market forces that will drive them to extinction? (pun
intended)

The do make great little inexpensive radiant heaters, indicating
ballast resistors, home made squibs, dummy loads, and other off-label
uses, so I wouldn't want to see them totally gone either.

I like the way they look, but there's the cost of operation and
environment to consider too. And the innards of the burnt out
fluorescent lamps are a source of parts.
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Default Light bulb power saver (and now the rest of the story)


On Mon, 07 Apr 2008 16:37:44 GMT, "James Sweet"
wrote:

Who
knows what else might be on the horizon.


Aluminum foil lamps outshine incandescent lights
http://www.news.uiuc.edu/news/07/0604lamps.html

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Default Light bulb power saver (and now the rest of the story)


On 07 Apr 2008 15:56:10 GMT, Roger Blake
wrote:

http://www.businesswire.com/portal/s...07022300512 0

GE Announces Advancement in Incandescent Technology; New
High-Efficiency Lamps Targeted for Market by 2010

Re-inventing Edison: New Light Bulb Will Provide High-Quality Light
and Deliver Efficiency Comparable to Compact Fluorescent Lamps

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Default Light bulb power saver (and now the rest of the story)

default wrote in :


On Mon, 07 Apr 2008 16:37:44 GMT, "James Sweet"
wrote:

Who
knows what else might be on the horizon.


Aluminum foil lamps outshine incandescent lights
http://www.news.uiuc.edu/news/07/0604lamps.html


efficiency seems about the same as incandecent bulbs.




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bz 73 de N5BZ k

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.

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Default Light bulb power saver (and now the rest of the story)



"default" wrote in message
...

On Mon, 07 Apr 2008 16:37:44 GMT, "James Sweet"
wrote:

Who
knows what else might be on the horizon.


Aluminum foil lamps outshine incandescent lights
http://www.news.uiuc.edu/news/07/0604lamps.html




That's interesting, however it states it uses a gas plasma to excite a
phosphor coating, so for all practical purposes it's a fluorescent lamp and
will have the same light characteristics.


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Default Light bulb power saver (and now the rest of the story)


On Wed, 09 Apr 2008 16:41:22 GMT, "James Sweet"
wrote:



"default" wrote in message
...

On Mon, 07 Apr 2008 16:37:44 GMT, "James Sweet"
wrote:

Who
knows what else might be on the horizon.


Aluminum foil lamps outshine incandescent lights
http://www.news.uiuc.edu/news/07/0604lamps.html




That's interesting, however it states it uses a gas plasma to excite a
phosphor coating, so for all practical purposes it's a fluorescent lamp and
will have the same light characteristics.

True enough the only interesting thing is the flat panel emitting
surface and "require no ballast, reflector or heavy metal housing."

No ballast seems unlikely; what does limit current?

Both Phillips and G.E. have announced plans to introduce incandescent
lamps by ~2010 that "will have efficiencies on a par with CFL's."
They also claim a better quality of light - which has to mean that
they are using waste IR to heat the emitter.

I figure they probably could have developed this years ago if they had
the incentive. With CFL's costing ~$1-$5 each, and government
mandates they now have the incentive. A bulb will be cheaper to make
unless something else comes along to change things. Perhaps they
intend to try to force a mandate that CFL's be outlawed due to the
mercury they contain.

Politics, marketing hype, and emotion - hard to design around those.
We see how well the "Hydrogen Economy" (most plentiful fuel in the
universe) is taking off . . . or the alcohol subsidies which have the
effect of raising food prices and may never break even, if corn is the
only viable feedstock in the US.

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Default Light bulb power saver (and now the rest of the story)


On Wed, 9 Apr 2008 15:14:48 +0000 (UTC), bz
wrote:

default wrote in :


On Mon, 07 Apr 2008 16:37:44 GMT, "James Sweet"
wrote:

Who
knows what else might be on the horizon.


Aluminum foil lamps outshine incandescent lights
http://www.news.uiuc.edu/news/07/0604lamps.html


efficiency seems about the same as incandecent bulbs.


It is basically a fluorescent lamp so they should be able to get at
least that efficiency out of it. Hard to predict what the real
benefit, if any, will be.

Media and marketing hype are driving the prediction - and they are
sucking down taxpayer money to play with it, so even if it is totally
impractical, you won't see them admit it.

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[quote='Silver Surfer[_2_];1874422']Does anyone recall those power saving "discs" for light bulbs they were
selling back during the oil embargo days of the 70's. The disc was placed
in a standard light bulb fixture and the light bulb was screwed in next.
The disc was nothing more than a diode that "saved energy" by blocking power
to the bulb for half of each cycle.

Is anyone still making these things? If so, where can I buy them

Like many good ideas, the Bulb Saver has gone out of style, partly because of new low power bulbs, and also because they were misunderstood. A diode can easily be inserted in the circuit inside the fixture, inline at the power cord, or even at the light switch. It cuts the voltage by .707 so cuts the power about in half. Of course it dims the bulb - that's the point ! It will extend bulb life tremendously, even halogen, and is very useful for decorative bulbs that are only available in certain wattages, but are just too darn bright. It is no different than dimming about 1/4, just not adjustable. I have some track lights in my hallway that were way too bright, they are on a dimmer but were still super bright . . . added a diode, now they are perfect. Don't let anyone tell you that they won't work - THEY WORK GREAT !
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