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Would resistors short itself?

  • Thread starter Mr. Man-wai Chang
  • Start date
M

Mr. Man-wai Chang

Jan 1, 1970
0
What are you, 8 years old?
I know, don't feed the trolls...
+1

Let the hate claim down!

I have long forgotten my hate and my arrogant ... :)

--
@~@ 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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P

P E Schoen

Jan 1, 1970
0
"Mr. Man-wai Chang" wrote in message
Let the hate claim down!
I have long forgotten my hate and my arrogant ... :)

I don't hate you any more than I might hate a gnat. You are merely annoying,
and apparently do not have anything useful to add to the discussion,
especially when you have a childish "tantrum" and type gibberish when anyone
tries to determine what you are really seeking. Your behavior exactly
emulates that of a classic troll, apparently in an attempt to solicit
attention rather than engage in rational discussion.

If you have a legitimate need for information about a specific application
or concept, people will be glad to help. But so far you have only spouted
silly objections to sound advice, and appear to lack even basic technical
expertise in concepts such as ohm's law and fundamental characteristics of
LEDs. Your argument about saving money by eliminating a $0.001 resistor is
ridiculous to the extreme.

So, if you persist in your immature behavior, I will certainly not feed your
trolling, and you will need to satisfy your craving for attention elsewhere.

Paul
 
M

Mr. Man-wai Chang

Jan 1, 1970
0
If you have a legitimate need for information about a specific
application or concept, people will be glad to help. But so far you have
only spouted silly objections to sound advice, and appear to lack even
basic technical expertise in concepts such as ohm's law and fundamental
characteristics of LEDs. Your argument about saving money by eliminating
a $0.001 resistor is ridiculous to the extreme.
So, if you persist in your immature behavior, I will certainly not feed
your trolling, and you will need to satisfy your craving for attention
elsewhere.

My needs are simple. If that humiliated the pride of electronic
engineering here, I was surprised!

In fact, they were more like defending the "holy land" here, which was
not my interest.

I am going back to resistors and LEDs for my toys....

BTW, words like "mature" are commonly used in bullying and trolling.

--
@~@ 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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M

Mr. Man-wai Chang

Jan 1, 1970
0
BTW, words like "mature" are commonly used in bullying and trolling.

Anyway many parents and managers use those words to scare kids. :)

--
@~@ 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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S

Shaun

Jan 1, 1970
0
In my four Years working at repairing industrial electronics and instrument
calibration; I did have a case where I found a shorted resistor. I
unsoldered it after measuring it a short and after removing it from the
circuit board it still measured a short. Very weird!

Shaun



"Tim Wescott" wrote in message

For my curiosity! :)

In my experience resistors fail open, not short. Usually what happens is
that some resistive material burns away, that forces the surrounding
material to carry more load which makes it hotter, and then the rest
burns away.

There may be some resistive material out there that leads to the resistor
failing short -- but it'd have to be a weird construction out of a weird
material.
 
S

Shaun

Jan 1, 1970
0
"Phil Allison" wrote in message

"Michael Black"
If you apply too much voltage, the voltage could arc around the resistor.


** Not likely at all.

Nearly all resistors are spirals of material (metal, carbon or composites)
around a ceramic rod - so any breakover will be between adjacent turns in
the spriral. This will probably ruin the part but it will not short end to
end.

A series string of resistors breaks the voltage applied to EACH resistor
down by the number of resistors, making much higher voltages tolerable.


.... Phil


Phil,

I have seen high voltage, high resistance resistors flash over end to end in
the lab, I even cleaned them with pure alcohol and a cotton cloth, then let
them dry for a few hours. The reason I cleaned them was that that finger
prints - which are slightly conductive could cause a change in resistance on
some of the resistors. I have seen this in the old Beckman DMM meters, they
have a 22 Mohm resistor in them to give them the high input impeadance and
if it gets soiled or touched, it could change the readings, so I cleaned
them with a cotton swap and alcohol.

Shaun
 
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