How can I tell a LED is blown out?

[Victory]

Is there a visual way of sussing whether a LED is blown out? Testing
it with a battery confirms it is blown out, but I wondered if there is
a visual way of seeing the actual burnt out parts...

 

[Eeyore]

Is there a visual way of sussing whether a LED is blown out? Testing
it with a battery confirms it is blown out, but I wondered if there is
a visual way of seeing the actual burnt out parts...

Forget it.

Graham

 

[David Harmon]

On Sun, 16 Mar 2008 09:30:17 -0700 (PDT) in sci.electronics.design,

Is there a visual way of sussing whether a LED is blown out? Testing
it with a battery confirms it is blown out, but I wondered if there is
a visual way of seeing the actual burnt out parts...

Only if you can remove the plastic and examine it under a
microscope.

 

[Tam]

Is there a visual way of sussing whether a LED is blown out? Testing
it with a battery confirms it is blown out, but I wondered if there is
a visual way of seeing the actual burnt out parts...

Hope your battery was at least 3V, with a current limiting resistor.

Tam

 

[StickThatInYourPipeAndSmokeIt]

Forget it.

Graham

"sussing"?

What a stupid word.

Electronics is scientific.

LEDs are scientific.

Why would someone use a term that is at best slang?

The term "examining" seems much more appropriate for a technical
question.

"sussing" sounds like adolescent rule breaker slang.

 

[StickThatInYourPipeAndSmokeIt]

Hope your battery was at least 3V, with a current limiting resistor.

Tam

Yes. As opposed to a test for a blown LED, it actually would create a
blown LED every time.

 

[Fred Bloggs]

"sussing"?

What a stupid word.

Electronics is scientific.

LEDs are scientific.

Why would someone use a term that is at best slang?

The term "examining" seems much more appropriate for a technical
question.

"sussing" sounds like adolescent rule breaker slang.

It's a valid English language word, derived from suspect:
tr.v. sussed, suss·ing, suss·es Slang
1. To infer or discover; figure out

 

[Fred Bloggs]

Is there a visual way of sussing whether a LED is blown out? Testing
it with a battery confirms it is blown out, but I wondered if there is
a visual way of seeing the actual burnt out parts...

You can hang a photo-diode/detector around there to give you an
indication, or probably just as good an I-V detector, it's probably
working if that's right...

 

[StickThatInYourPipeAndSmokeIt]

It's a valid English language word, derived from suspect:
tr.v. sussed, suss·ing, suss·es Slang
1. To infer or discover; figure out

Looks and sounds like slang, and the criminal element sticks out like a
green thumb.

It fucking sounds like recently coined gang boy lingo.

Got any etymology on it?

 

[Paul E. Schoen]

You can hang a photo-diode/detector around there to give you an
indication, or probably just as good an I-V detector, it's probably
working if that's right...

If the LED got blown out by an extreme overload, such as applying 120 VAC,
you would see the damage, but in most cases it is much more subtle.
Actually, the Light Emitting Diode changes to a Darkness Emitting Diode, or
DED

Usually an ohmmeter, especially in diode check mode, will provide just
enough current to see some light, and it will conduct in the proper forward
bias direction. But it may not work on LEDs with higher voltage, like blue
and white varieties.

Paul

 

[Fred Bloggs]

If the LED got blown out by an extreme overload, such as applying 120 VAC,
you would see the damage, but in most cases it is much more subtle.
Actually, the Light Emitting Diode changes to a Darkness Emitting Diode, or
DED

Usually an ohmmeter, especially in diode check mode, will provide just
enough current to see some light, and it will conduct in the proper forward
bias direction. But it may not work on LEDs with higher voltage, like blue
and white varieties.

Paul

It's hard to tell if this is a high rel application or an incoming
inspection requirement, I'm starting to "suss" it's the latter

 

[StickThatInYourPipeAndSmokeIt]

I'm starting to "suss" it's the latter

Crimany! The retarded word loyalty level in here is ridiculous.

 

[Michael A. Terrell]

Crimany! The retarded word loyalty level in here is ridiculous.

They're just trying to make you feel like you're at 'the home',
retard.

BTW, its VERY appropriate for 'dimbulb' to chime in on a thread about
a dead LED.


--
aioe.org is home to cowards and terrorists

Add this line to your news proxy nfilter.dat file
* drop Path:*aioe.org!not-for-mail to drop all aioe.org traffic.

http://improve-usenet.org/index.html

 

[Hot Jock]

.... Actually, the Light Emitting Diode changes to a Darkness
Emitting Diode, or DED

Shouldn't that be a Darkness Using Diode?

 

[John O'Flaherty]

Looks and sounds like slang, and the criminal element sticks out like a
green thumb.

It fucking sounds like recently coined gang boy lingo.

Got any etymology on it?

Merriam-Webster dictionary:

suss [by shortening & alter. fr. suspect] (1966)
verb transitive
1 chiefly Brit : to inspect or investigate so as to gain more
knowledge — usu. used with out
2 chiefly Brit : figure out — usu. used with out


If it was adolescent slang in 1966, it's long since grown up.

 

[Rick G]

Is there a visual way of sussing whether a LED is blown out? Testing
it with a battery confirms it is blown out, but I wondered if there is
a visual way of seeing the actual burnt out parts...

Now I can see how people try to destroy a group by getting side
tracked about some obscure word and avoids answering the question with
an honest answer. There is no values with ignorance... The real answer
about seeing a blown LED is to say that you need a microscope to see
damage to the die or wires. How hard was that???????

Yag1064

 

[Joe Brophy]

If the LED got blown out by an extreme overload, such as applying 120 VAC,
you would see the damage, but in most cases it is much more subtle.
Actually, the Light Emitting Diode changes to a Darkness Emitting Diode, or
DED

Usually an ohmmeter, especially in diode check mode, will provide just
enough current to see some light, and it will conduct in the proper forward
bias direction. But it may not work on LEDs with higher voltage, like blue
and white varieties.

Paul

Like he said...plus when a LED is transformed to a DED it will no longer emit any light regardless of being visible to the
human eye's spectrum or not. Instead they usually tend to emit darkness across the entire spectrum. Maybe there is a way
of modding a "darkness sensor" to measure the effect? regards, Joe.

 

[StickThatInYourPipeAndSmokeIt]

Now I can see how people try to destroy a group by getting side
tracked about some obscure word and avoids answering the question with
an honest answer. There is no values with ignorance... The real answer
about seeing a blown LED is to say that you need a microscope to see
damage to the die or wires.

Yag1064

That's called "visual inspection", and will only indicate a failed
device if said failure was such that physical damage would be visible
during said inspection.

How hard was that???????

We don't want to know what you have that is hard. Keep it to yourself.
Just so you know, jacking off at the mouth about others "destroying a
group" puts you in the same box, dipshit.

 

[Richard Henry]

Yes.  As opposed to a test for a blown LED, it actually would create a
blown LED every time.

Then it would always be right.

 

[Rick G]

That's called "visual inspection", and will only indicate a failed
device if said failure was such that physical damage would be visible
during said inspection.


We don't want to know what you have that is hard. Keep it to yourself.
Just so you know, jacking off at the mouth about others "destroying a
group" puts you in the same box, dipshit.

Dip-Shit ya, your right. This group is called sci.electronics.design.
I thought there was some knowledge to be gained. I see your point!!
It's better to make fun of people than it is to help them. It seems a
waste of a good resource for knowledge. Your command of the topic is
pretty obvious. Good Luck to members of this group. I hope you are
able to separate the wheat from the chaff.......