Flux? (Leds) - Page 2 - Electronic Circuits Projects Diagrams Free

HarveyH42 · 10th December 2006, 01:40 AM

Reading about flux in the advertisement gives the impression of hype, but in other sources it seems to have some 'real' meaning.

http://www.electro-optical.com/whitepapers/candela.htm

What I'm thinking, is that it refers to something like density. Shining a bright 5mm LED at the wall, some areas of the circle are brighter than others. I have superflux pirahna LEDS, 70 degree angle, same as the 5mm, but the circle is more uniform. Guessing this is the difference. True, not very scientific, the LEDS are from different sources.

fingaz · 10th December 2006, 09:54 AM

Quote:

Originally Posted by Sceadwian

People in the RF community have been saying the same thing for years. It's not that simple. When you get into propagation effects, like RF radiation or light emiting, the entire nature of the beast changes. It's like going from 9 volts to 9kv's The same rules don't apply. Different materials act in differnet manners under different cirucmstances, and there is no way to properly predict a users circumstances under anything except the user putting the device to work and debugging it. Everyone wants their device to be the best, of course they're going to place their device in the best light it can be placed in.

IT REALLY IS SIMPLE, If all manufacturers used the same protocol for measuring performance, then we would be better able to compare products because we would then know that the technical specs given were obtained under the same test conditions as other products (ie. luminous intensity for all LED's would be measured at a set distance, angle, etc. etc.)

That way, regardless of the use to which the component is put, we still know how it compares to other products (under the same test conditions.)

Hero999 · 10th December 2006, 12:25 PM

As I say again. WHy should they care? They don't want you to choose the best componant, they want you to choose their's. If they can confuse you by blinding you with science into choosing their product then all the better.

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10th December 2006, 01:40 AM	(permalink)
HarveyH42	Reading about flux in the advertisement gives the impression of hype, but in other sources it seems to have some 'real' meaning. http://www.electro-optical.com/whitepapers/candela.htm What I'm thinking, is that it refers to something like density. Shining a bright 5mm LED at the wall, some areas of the circle are brighter than others. I have superflux pirahna LEDS, 70 degree angle, same as the 5mm, but the circle is more uniform. Guessing this is the difference. True, not very scientific, the LEDS are from different sources.

10th December 2006, 12:25 PM	(permalink)
Hero999	As I say again. WHy should they care? They don't want you to choose the best componant, they want you to choose their's. If they can confuse you by blinding you with science into choosing their product then all the better. __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez And http://www.silicontronics.com, same screen name as here.