If you have nothing to do: Self made LED

[qWord]

Just impressive how simply you can build a LED: All you need is a Silicon carbide Crystal (e.g. from ebay) and a power supply with current limitation. Also you need pins for electric contacting. In the bottom some pictures showing the 'LED' at work (~20-30V, 30-100mA) :-D

(the pin you can see, is the negative pole)




qWord

[qWord]

one more picture:

[dedndave]

it doesn't have to be silicon carbide   :P

pick one from group 3 and one from group 5 (skipping the transitional metals) ...



i know this how ?
i used to work for a company called Three-Five Systems   :bg
i had to ask what the name was about, of course
i figured my boss had better know the answer - he was the director of R&D   :lol

[qWord]

it doesn't have to be silicon carbide   :P

It could be any semiconductor - however, the band gab should allow emission in the visible light  :lol

[oex]

it doesn't have to be silicon carbide   :P

It could be any semiconductor - however, the band gab should allow emission in the visible light  :lol

Infra-Red LEDs are surprisingly useful.... At least as a complete newbie I have never used a visible light LED only an infra-red (as in a WII-Mote).... I guess it's like visual encryption :lol

[Magnum]

I used to use I.R. light sources for my photography.

Made for some interesting pictures, both in B/W and color.

Dave was probably into that too.

[dedndave]

actually, i always found photography rather interesting
however, with electronics and amateur radio, i had enough expensive hobbies and opted for chess, instead   :bg

[Rockphorr]

it doesn't have to be silicon carbide   :P

pick one from group 3 and one from group 5 (skipping the transitional metals) ...



i know this how ?
i used to work for a company called Three-Five Systems   :bg
i had to ask what the name was about, of course
i figured my boss had better know the answer - he was the director of R&D   :lol

silicon carbide is Si-C

Boss state is not a prove.
pick one from group 3 and one from group 5 - it is semiconductor
but Si-C is led like lamp on W

[qWord]

but Si-C is led like lamp on W

?

[Rockphorr]

but Si-C is led like lamp on W

?

???