[Maybe OT] Could ghosts manipulate electronic security devic

[Rheilly Phoull]

On 10/08/13 15:32, notme wrote:

I can't believe you guys are allowing yourselves to be led around by
this troll !!!!

Not everyone who post "waay out" topics is a troll. It's called "an open
mind".

Ohh Yeeeaaahhh, Right !! ;-)

 

[Rheilly Phoull]

On 10/08/13 15:15, P E Schoen wrote:

"Rheilly Phoull" wrote in message
news:EsmdnTLYmYUt45jPnZ2dnUVZ_sydnZ2d@westnet.com.au...

Yup, what he said. Watch out for shorts though !!

There won't be so many shorts once summer is over. Except in Bermuda, of
course.

Paul

Hmmm, could those shorts fail "Open" ???

 

[Mr. Man-wai Chang]

On 10/08/2013 7:44 AM, Rheilly Phoull wrote:

Yup, what he said. Watch out for shorts though !!

OK, when a LED dies normally, would it blow like a fuse or would it
become a conductor?

--
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[Mr. Man-wai Chang]

On 10/08/2013 3:15 PM, P E Schoen wrote:

There won't be so many shorts once summer is over. Except in Bermuda, of
course.

You weren't talking about the Bermuda Triangle, were you?

--
@~@ Remain silent. Nothing from soldiers and magicians is real!
/ v \ Simplicity is Beauty! May the Force and farces be with you!
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[John Fields]

On Sat, 10 Aug 2013 18:07:54 +0800, "Mr. Man-wai Chang"
<toylet.toylet@gmail.com> wrote:

On 10/08/2013 7:44 AM, Rheilly Phoull wrote:
Yup, what he said. Watch out for shorts though !!

OK, when a LED dies normally, would it blow like a fuse or would it
become a conductor?

---
Neither.

For an LED operated within its specifications, normal end-of-life is
defined as occurring when its output decays to, or past, a particular
point.

Any other type of failure is abnormal.

--
JF

 

[Mr. Man-wai Chang]

On 10/08/2013 7:07 PM, John Fields wrote:

Neither.
For an LED operated within its specifications, normal end-of-life is
defined as occurring when its output decays to, or past, a particular
point.
Any other type of failure is abnormal.

So it would just stop being conductive?

--
@~@ Remain silent. Nothing from soldiers and magicians is real!
/ v \ Simplicity is Beauty! May the Force and farces be with you!
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[Michael Black]

On Sat, 10 Aug 2013, John Fields wrote:

On Sat, 10 Aug 2013 18:07:54 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 10/08/2013 7:44 AM, Rheilly Phoull wrote:
Yup, what he said. Watch out for shorts though !!

OK, when a LED dies normally, would it blow like a fuse or would it
become a conductor?

---
Neither.

For an LED operated within its specifications, normal end-of-life is
defined as occurring when its output decays to, or past, a particular
point.

Any other type of failure is abnormal.

"The batteries must be getting weak, I swear that flashlight isn't putting

out as much light as it used to. Well, that didn't work, those are new
batteries now, and I even measured their voltage and they are fresh, yet
the flashlight is very much weaker than it used to be."


Michael

 

[John Fields]

On Sat, 10 Aug 2013 20:49:03 +0800, "Mr. Man-wai Chang"
<toylet.toylet@gmail.com> wrote:

On 10/08/2013 7:07 PM, John Fields wrote:
Neither.
For an LED operated within its specifications, normal end-of-life is
defined as occurring when its output decays to, or past, a particular
point.
Any other type of failure is abnormal.

So it would just stop being conductive?

---
Google LED wearout.

--
JF

 

[Jim Thompson]

On Sat, 10 Aug 2013 14:48:31 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Sat, 10 Aug 2013 20:49:03 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 10/08/2013 7:07 PM, John Fields wrote:
Neither.
For an LED operated within its specifications, normal end-of-life is
defined as occurring when its output decays to, or past, a particular
point.
Any other type of failure is abnormal.

So it would just stop being conductive?

---
Google LED wearout.

Don't the knees go first ?:-}

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[John Fields]

On Sat, 10 Aug 2013 12:49:43 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

On Sat, 10 Aug 2013 14:48:31 -0500, John Fields
jfields@austininstruments.com> wrote:

On Sat, 10 Aug 2013 20:49:03 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 10/08/2013 7:07 PM, John Fields wrote:
Neither.
For an LED operated within its specifications, normal end-of-life is
defined as occurring when its output decays to, or past, a particular
point.
Any other type of failure is abnormal.

So it would just stop being conductive?

---
Google LED wearout.

Don't the knees go first ?:-}

I think so, since that's where recombination liberates photons.

...Jim Thompson
--

JF

 

[Michael A. Terrell]

notme wrote:

I can't believe you guys are allowing yourselves to be led around by
this troll !!!!

Not everyone who post "waay out" topics is a troll. It's called "an open
mind".

All of you trolls make that claim.


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

 

[Mr. Man-wai Chang]

On 11/08/2013 3:48 AM, John Fields wrote:

So it would just stop being conductive?
Google LED wearout.

OK.... but do you have a quick-and-short answer?

--
@~@ Remain silent. Nothing from soldiers and magicians is real!
/ v \ Simplicity is Beauty! May the Force and farces be with you!
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[Mr. Man-wai Chang]

On 11/08/2013 3:48 AM, John Fields wrote:

Google LED wearout.

From the dozen results I found, they didn't talk about what happened
when LED died. They only talked about how to prevent LEDs from failing
early....

My question actually made headline in Google Search.

--
@~@ Remain silent. Nothing from soldiers and magicians is real!
/ v \ Simplicity is Beauty! May the Force and farces be with you!
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[John Fields]

On Sun, 11 Aug 2013 22:11:27 +0800, "Mr. Man-wai Chang"
<toylet.toylet@gmail.com> wrote:

On 11/08/2013 3:48 AM, John Fields wrote:
Google LED wearout.


From the dozen results I found, they didn't talk about what happened
when LED died. They only talked about how to prevent LEDs from failing
early....

---
Not true, since they delved into the causes attributed to LED failure.

Perhaps the ones you missed.
---

My question actually made headline in Google Search.

---
So now you're famous.

What's different?
--
JF

 

[Mr. Man-wai Chang]

On 12/08/2013 4:52 AM, John Fields wrote:

Not true, since they delved into the causes attributed to LED failure.
Perhaps the ones you missed.

I just wanna know what would happen when a LED failed normally. I don't
care about the wear-out or prevention models.

My question actually made headline in Google Search.
So now you're famous.
What's different?

You misunderstood again. I meant there was no result that addressed my
question.

I guess I should ask/google the same question again maybe a year later.

--
@~@ Remain silent. Nothing from soldiers and magicians is real!
/ v \ Simplicity is Beauty! May the Force and farces be with you!
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[John Fields]

On Mon, 12 Aug 2013 18:38:21 +0800, "Mr. Man-wai Chang"
<toylet.toylet@gmail.com> wrote:

On 12/08/2013 4:52 AM, John Fields wrote:
Not true, since they delved into the causes attributed to LED failure.
Perhaps the ones you missed.

I just wanna know what would happen when a LED failed normally. I don't
care about the wear-out or prevention models.

---
When an LED fails normally, its light output decays to a point which
is no longer considered satisfactory.
---

My question actually made headline in Google Search.
So now you're famous.
What's different?

You misunderstood again. I meant there was no result that addressed my
question.

---
The fault in not being able to understand the answers to your
questions lies not in the answerers.
---

I guess I should ask/google the same question again maybe a year later.

---
Wait as long as you like, the answer will still be the same.

--
JF

 

On Mon, 12 Aug 2013 19:07:53 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Mon, 12 Aug 2013 18:38:21 +0800, "Mr. Man-wai Chang"
toylet.toylet@gmail.com> wrote:

On 12/08/2013 4:52 AM, John Fields wrote:
Not true, since they delved into the causes attributed to LED failure.
Perhaps the ones you missed.

I just wanna know what would happen when a LED failed normally. I don't
care about the wear-out or prevention models.

---
When an LED fails normally, its light output decays to a point which
is no longer considered satisfactory.
---

My question actually made headline in Google Search.
So now you're famous.
What's different?

You misunderstood again. I meant there was no result that addressed my
question.

---
The fault in not being able to understand the answers to your
questions lies not in the answerers.
---

I guess I should ask/google the same question again maybe a year later.

---
Wait as long as you like, the answer will still be the same.
Greetings John,

Don't you think Mr Chang is just a troll? I'm pretty sure he is. His
LED end of life question was asnwered such that even a non-native
speaker of english with a 3rd grade education level would have
understood it. It is obvious from the answers that the normal failure
mode of LEDs is that light output drops to unacceptable levels. And if
Mr Chang really wanted to know if LEDs fail open or closed when
connected to a source of too high voltage and current he certainly
could have found this out empirically in a short period of time. I'm
pretty sure that modern production techniques are such that random
sampling of a few LEDs from several makers would be sufficient to give
a reliable indication of the result of driving LEDs with too much
voltage and current. I know from my own personal experience over the
years that every LED I have ever caused to fail has failed in the same
way, whether from being used for too many hours or from being supplied
with too much voltage and current.
Eric

 

[Mr. Man-wai Chang]

Mr. Field, maybe you could write a thesis on death of LED and earn a
MSc/PhD in Electronic Engineering if not Material Science...

Anyway, when I had the time and the right mood, I might read those
technical papers, looking for words similar in meaning to "death of LED".

--
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/ v \ Simplicity is Beauty! May the Force and farces be with you!
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[Mr. Man-wai Chang]

On 14/08/2013 9:34 PM, Mr. Man-wai Chang wrote:
> Mr. Field, maybe you could write a thesis on death of LED and earn a

Oops.. Mr. Field*s*! Sorry!

--
@~@ Remain silent. Nothing from soldiers and magicians is real!
/ v \ Simplicity is Beauty! May the Force and farces be with you!
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