You could say that - but the LED won't do much.
Again! Current-limiting resistor for LEDs
Jul 22, 2013
32 Replies
How do you prevent a LED from shorting itself?
Is the value of input voltage related?
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LEDs are current operated - a fixed voltage is the least suitable way to drive them.
You have been told this by several different people, if you still don't understand - take up woodwork!
What's wrong about that?
All those motherboards out there uses fixed voltage to drive indicator LEDs, I supposed.
I think you are asking for too much from simple LED applications.
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I am talking about those simple 3mm/5mm LEDs here, not those hi-power LED lamps....
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Those are even more so likely to be fed via a current limiting resistor.
The fixed voltage comes in where you have predictable volt drop - and current through the series resistor.
Maybe you could add negative resistance?
When you apply less than the forward voltage drop, the device becomes a Darkness Emitting Diode, or DED, and it really sucks (light).
Paul
Indeed, and neither would be the LED.
It appears we're _all_ asking too much from Simple Simon.
It becomes a solar cell! Just not a very good one.
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Isn't it inherently PV with no bias?
How do you prevent a LED from shorting itself?
Is the value of input voltage related?
Why don't you look up basic electronics on the internet (a course) or go to a bookstore a buy a book on basic electronics instead of asking all these dumb questions.
Shaun
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I expected short answers here. Don't worry, I always google if I know the right set of keywords.
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