Impossible current circuit

152

02:00:35

In this voltage, this current is impossible.

published 11 years ago

nciscrimefan

11 years ago

Well, it is possible. If the diode is placed to the other direction, the current will be much higher. But now in this case the reverse voltage is high enough to pass through the diode. And it has such a high resistance... You know what I mean?!

vadim911

11 years ago

Супер

Retro

11 years ago

Quite honestly a diode subjected to that magnitude of reverse bias is certainly going to leak if not explode in your face!!

thebugger

11 years ago

Reverse breakdown is what this is called. Zener diodes exploit that semiconductor quality in a controlled matter to stabilise the voltage.

thebugger

11 years ago

Even at lower voltages (5-10V) a diode will have some reverse leakage (maybe a few nA). I've done experiments with it in EC. Just use a reverse biased diode to bias a 5x Darlington transistors (you'll need veery high gain) to drive an LED

atlaswalkedaway

11 years ago

Nearly all perceived impossibilities are a matter of scale and reference. There's no telling if a diode large enough to handle this is sitting in some darpa warehouse.

rich11292000

11 years ago

They used to make big stuff, a single diode as big as your body. That's when they built things without integrated components. Now they would have a crazy diagram full of millions of ics to build it, and it's more efficient.

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