15kV AC on a standard 5mm LED
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Uploader Comments (grogyan)
All Comments (21)
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well, what do 5 VIRGINS and a couple dozen beers...
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the led was only okay because even though it was 450 amps, the led, being a resistor, and an exponential one based on current, actually would have been able to save itself.
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the reason it doesnt blow is that the ARCS ARE GIANT RESISTORS!
Lol
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nice!
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When I put an LED against my phone battery, it turned on, got really hot then blew up and made half the bus smell.
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Lol!
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That LED was probably screaming in agony.
4 years ago 2
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If the current is limited to 0,03 A, the controller will reduce the voltage, perhaps on 2 V :-) That´s the reason, why the LED survives
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LED torture is morally wrong. You killed a wonderful LED that probably has a family, and would have lived hundreds of years in a proper, loving environment. Shame on you.
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yeah but, that's something wrong in your data: 15000 V * 0,03 A = 450 VA !!!
A standard 5mm LED can't lead that power!
I agree what other comments say: you shold consider the high impedance of the secondary of the transformer; 15 kV is the voltage you can measure without any load.
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The neon transformer is current limited to 30mA.
All the current is passing through the LED, haf in the forward bias, and the other half in the reverse bias direction.
Only one bias produces light and if it were DC, you would at most get 30mA, thats why the LED doesn't blow up.
grogyan 4 years ago
But the mere fact that the LED still worked afterwards is what was really impressive.
There would be some loss across the terminals, but I just don't know.
Cool none the less.
grogyan 5 years ago
We were unsure whether the AC was going over or through the LED, byt considering the properties of an LED leads us to believe that the AC was going through it, because if it were rectified it would be about 30mA and seeing as an LED works as a diode, in half wave rectification, presto LIGHT!
If it were 15kV DC @ 30mA, the LED would sure to blow.
grogyan 5 years ago