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Mounting LEDs sounds a new quirk ...
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Mounting LEDs sounds a new quirk ...
Don't worry about it, he used 'but' after a comma.
Oops! I think you're referring to the rule about a comma after 'but'. Never mind - nice try.
Is this the "rule" that says do not put a comma in front of the parenthetical element when a parenthetical element comes after a coordinating conjunction?
If so it is something I have only ever encountered as a "rule" from American sources; and one which escaped the notice of authors such as Jane Austen who in Pride and Prejudice included to give but 2 examples:
"I was so vexed to see him stand up with her; but, however, he did not admire her at all: indeed, nobody can, you know; and he seemed quite struck with Jane as she was going down the dance."
and
"He was beyond comparison the pleasantest man; he certainly admired her, and his situation in life was most eligible; but, to counterbalance these advantages, Mr. Darcy had considerable patronage in the church, and his cousin could have none at all."
Roger Woodham writes (with a nice, subtle example) on the BBC WS site
b.. I'm going to make some New Year resolutions, but I don't suppose I'll keep them A comma after but would be very unusual, .....
I go along with that as plain English would militate for simpler sentence constructions.
That's a good answer for development work but how does he propose upgrading them in the field? A small FLASH PLD would probably be a better solution. methinks an ASIC would be overkill.
MBQ
Oops! I think you're referring to the rule about a comma after 'but'. Never mind - nice try.
Not at all. I know of no rule about a comma AFTER 'but'.
Perhaps you're confused ...
There again, I don't know everything.
Do you?
Funnily enough an article just appeared in Photonics Spectra by the guys at Philips Lumileds entitled "Busting Myths About LED reliability".
I've not read this yet, but from a quick scan they are overdriving 1A devices at 1.5Amps and still achieving 10000 hours lifetime,and a drop of about 10% in output at end of life. Thats pretty good going
I suppose most of your comments would probably appear to fall into the Myths category according to the authors :-)
While High Power LEDs aren't quite there yet for most lighting, they are a relatively young technology and it is easy to see the room for significant improvements.
cheers
David
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That's what I think too - and I believe we should support the R&D. If there's only negative feedback there won't be a demand so the technology won't be improved.
Mary
Try here -
LEDs have been around for well over 30 years.
Surely all that is saying is that one should avoid *unnecessary* commas after conjunctions. Like most generalisations about the English language, it does not address the various circumstances in which a comma may be necessary or desirable. These are discussed at some length in at least one book available online:
White and blue are products of the 90`s look up Shuji Nakamura and gallium nitride, high power LEDs in big dice form have only been around since after the millenium.
Adam
Excuse me this thread is about lightbulbs not commas,,,,,,,,,,,,,,,,,,,,,
mark
big DIE form. Dice is the plural.
According to the NSOED (New Shorter Oxford Dictionary) "dice" is also a singular word and has the plural "dices". So there.
They have indeed, now read slowly with emphasis on the bit that says High Power.
We're still waiting for a white one.
You'd need to define 'high power'. And define the light output from them too. And their life. That is the problem with LEDs.
... and posters who just never want to back down after making pedantic statements is a problem with newsgroups
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