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Re: LED beleuchtungsstarke

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Sehr wahrscheinlich, aber...

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Ich glaube nicht, dass die LEDs teurer sind als Xenon Lampen.
Mechanischer Aufwand? Die LEDs sollten doch einfacher zu Montieren
sein als eine Xenon-Lampe. Oder meinst Du die Abblendvorrichtung? Wenn
man damit gleichzeitig die Scheinwerfer-Reichweite einstellt (was
sowieso gesetzlich vorgeschrieben ist) dann hat man damit gespart.
Ausserdem machen die das weil ein E-Motor billiger ist als die
doppelte Anzahl von LEDs

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Energie sparen ist wohl sowieso egal, da spart man mehr wenn der Motor
1PS weniger hat. Man spart aber 'ne menge Elektronik und
Hochspannungsleitungen die bei den Xenon Lampen erforderlich sind.


Re: LED beleuchtungsstarke
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Es gibt da einen recht interessanten link(leider auch nur in Englisch):
http://members.misty.com/don/ledp.html
Gruss
Harald

Re: LED beleuchtungsstarke
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Which is the reason Jesus was not born in Australia, they couldn't find
three wise men and a virgin.

I'm terribly sorry about my piss-poor translation using dictd-server, please
forgive me but the only Deutch words I know are German products and a
couple of greetings.

In any case New Zealand is NOT Australia.

Kind regards

Re: LED beleuchtungsstarke

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Nein. Macht nur mehr als dreifache Eingangsleistung, da gleichzeitig mit
I_nenn die Spannung steigt. Der herauskommende Lichtstrom steigt zwar auch
noch, aber deutlich degressiver als P_in. Und das selbst bei den sonst eh
erst sp"at kommenden roten und orangenen (z.B. die 20-30 cd- Sharp G... von
Conrad). Die LXHL- haben, genauso wie die Nichia NSPW500BS, (\Phi/P)_
bei ca. 0,1 P_. (Bis auf eine mir bisher untergekommene Ausnahme. Und
dann ist (\Phi/P)_ ca. 2 (\Phi/P)_. Zumindest kommt das so $\Pi
\times {\mbox Daumen}$ hin:=)


Viele Gr"u"se,

Olaf.

PS.: Weiteres in der Gebetsm"uhle (siehe www.enhydralutris.de/Fahrrad/ ) :=)



Re: LED beleuchtungsstarke
Olaf Schultz schrieb:
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 erst sp"at kommenden roten und orangenen (z.B. die 20-30 cd- Sharp G...
von
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Das ist etwas schwer lesbar / codiert - bist du Programmierer ? :-)

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Umlaute sind doch auch schon erfunden, ist doch eine .de Gruppe, ich
finde richtige Umlaute schöner.

Martin

Re: LED beleuchtungsstarke
On Fri, 21 Nov 2003 09:35:29 +0100, Martin Lenz

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Eher \tex - er :-)

Obwohl TeX mehr mit programmieren als mit schreiben zu tun hat, wenns
um mathematische Ausdrücke geht.

--
Laurent, der TeX liebt

Re: LED beleuchtungsstarke
Good morning.

By way of explanation I'd like to clear up some points that seem to have
flummoxed some dear readers.

1. It is not a power saving device. When I state that it has low power
consumption, I'm detailing the hybrid circuit (module) and not it's output.

2. When I state that it interconnects a 'nominal' 9 volt supply with a
'nominal' 5 volt LED, I mean that these are the entry points for use of the
circuit. Some LED's are 3 volts in which case 5 to 6 volts would be
suitable for application. A 6 volt LED could be powered with a 10 to 12
volt supply. If the device were to be used in a truck or a bus with 24
volts supply then one would want to add a voltage divider (say 2 resistors
at 150 ohms, wattage dependant on the size of the array being powered) at
the input side. The tables supplied on the datasheets indicate "nominal"
input and output voltage limits for each model...ie LAM9 or LAM9P, the "P"
standing for power.

3. The components used in the hybrid are rated far higher than I have
provided for in the datasheets for safety sake. Therefore sinking more
current than is specified would not damage the module.

4. The hybrid module is designed with Cadsoft Eagle circuit CAD software -
in essence, this is what is 'for sale'.

5. Scoping the output of the module will provide a clue as to how it works.

6. Lux increases, nM stays the same +- 10%

Any other questions you may have will be gladly answered provided that I do
not give the game away.

Sorry about my piss-poor German.

Thank you for your continuing indulgence.

LAM9 datasheet
http://www.geocities.com/ledaccelerator/9/index.html

LAM9P datasheet
http://www.geocities.com/ledaccelerator/9p/index.html

Yours sincerely
Peter Lowrie


Re: LED beleuchtungsstarke

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[...]

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      ^^^^^^^^^^^^^^^^^^^
Das ist doch mal ein Stichwort, der Helligkeitseindruck. Mir hat mal jemand
erklärt, dass pulsierende LEDs, auch oberhalb des zeitlichen
Auflösungsvermögens des Auges als heller wahr genommen werden als
kontinuirlich betriebene. So dass man mit gleicher mittlerer Leistung durch
pulsieren einen höheren Helligkeitseindruck erzeugen kann.
Leider hat er mir nicht erzählen können, mit welchem Puls-Pausen-Verhältnis
das optimal funktioniert und welcher physiologische Effekt dabei wohl
ausgenutzt wird...

--
Ingolf Pohl

Re: LED beleuchtungsstarke



Re: LED beleuchtungsstarke


Nein, er war es nicht ;-) War so'n Heini, der Leuchtmittel und Lampen für
Tastaturen, Schaltschränke und Bediengeräte verkauft...

Und 'ne Erklärung für die eigenartige Physiologie ist das auch nicht...
.. eher so'ne Behauptung wie ich sie auch zum Besten gab.

Ingolf


Re: LED beleuchtungsstarke
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Hallo Ingolf,
wie wärs denn da eher mit diesem Link?
http://members.misty.com/don/ledp.html
Der behauptet das Gegenteil.
Hatte ich übrigens schon letzte Woche gepostet...
Gruss
Harald

The LED Accelerator argument to date...


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and his claimed LED Accelerator.

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paid,a disposable camera to take photographs of this development.

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them with appropriate credit in any commentary I may have on the device.

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will include Voltage, Current Lux and nM meter readings with his device
connected.

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photographs I obtain available to sci.engr.lighting, sci.electronics.design
and www.candlepowerforums.com

Adam

Peter Lowrie follows up:

http://www.geocities.com/ledaccelerator/9/index.html
...Is what it's all about.

So that's all good and proper, thank you Adam. As it turns out you are not
only a scholar but a gentleman also. Scott Stephens has been scratching his
head, Daniel Stern ever the businessman trusts no-one and Clives LED
teleporter sounds amazing...LOL.

Still a prototype sits atop the oscilloscope over there on the corner of my
table as it has been for about four weeks now shining away in two modes -
'accelerated' and non. Not one LED has gone Poof, snap, crackle or Pop!

Whereas component values won't be displayed, I'll also shoot a temperature
measurement on the bright LED's for you. Adam didn't mention input voltages
which I will be able to show in photographs - that the unit is running from
a 9 volt supply. Hope is I can photograph it all in such a manner as to not
give a secret away and clear enough so that Daniel will be able to trace
the test leads back to instruments thus verifying that no skulduggery is
afoot. I do not want to lead you gentlemen astray and given the pressure
exerted by way of your (and other posters) various dubious assertions of
malfeasance and snake charming, methinks any lesser mortal or fraudster
would have shrunk back into some dark recess, disappearing from view by
now.

You all have available comprehensive information from links on the site
regarding my various exploits, endeavours and accomplishments by way of a
downloadable CV. Terms like; open book, spring to mind.

Oh, by the way, an offer arrived yesterday which I will consider in due
course. :-)

Yours etc
Peter Lowrie

Re: The LED Accelerator argument to date...

Peter, piss off. We are tired of all the stubborn 'perpetuum mobile',
'anti gravitation by a shielded coil', 'faster than light', 'pulsed
LEDs are brighter' people. It's just Spam, the same as every Spam.
We will not even try to explain the obvious mistake you made, because
it proved impossible to educate such simple minded men.

Simply run a LED at 30% overcurrent if you want to have 30% more
light. It will not instantly blow away, just not last as long as
advertised (MTBF).
--
Manfred Winterhoff, reply-to invalid, use mawin at despammed.com
homepage: http://www.geocities.com/mwinterhoff /
We've slightly trimmed the long signature. Click to see the full one.
Re: The LED Accelerator argument to date...

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No!...Make me.

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A (i don't remember which one) NG says that commercial and professionsal ads
are OK provided that restraint is exercised.

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Thank you for sparing us.
 
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Experience showed me that they go Poof! in a matter of minutes.

2c
PEL

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