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4hv.org :: Forums :: General Science and Electronics
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Uhh, i just built a light emitting antidiode...

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Adam Munich
Fri Jul 09 2010, 10:12PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
The only "low melt alloy" i have is mercury, and i suppose that wouldn't make too good of a mount...
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Mattski
Fri Jul 09 2010, 10:23PM
Mattski Registered Member #1792 Joined: Fri Oct 31 2008, 08:12PM
Location: University of California
Posts: 527
You could try solder, it melts at a comparatively low temperature, though probably not as low as Conundrum's BiSnPb.
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Conundrum
Fri Jul 09 2010, 11:14PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
if anyone has a use, pm me and i can send them a few pieces from the crystal I used along with some mounting alloy.

Link2

regards, -A
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Adam Munich
Fri Jul 09 2010, 11:39PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Problem is, This LED reaches a temperature of well over solder's melting temperature, it uses 24W to make that .5mcd.
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803
Sat Jul 10 2010, 04:08PM
803 Registered Member #2807 Joined: Fri Apr 16 2010, 08:10PM
Location:
Posts: 191
G,

could you write a basic plan so I could play with it? I want to see the effects of higher voltage, cold and heat, and stuff.
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Adam Munich
Sat Jul 10 2010, 11:30PM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Plan? I just took two saftey pins at 12v and poked them at my SIC chunk. This was the best working crystal, so i broke it off and jbwelded it to a brass piece. Then i soldered the pins in a way that they always touch the SIC in the right way.

I'll play around with temp and volts when i get back home on monday.
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803
Sun Jul 11 2010, 12:00AM
803 Registered Member #2807 Joined: Fri Apr 16 2010, 08:10PM
Location:
Posts: 191
where did you buy the crystal? Are they a special type?
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Adam Munich
Sun Jul 11 2010, 02:44AM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
A local rock shop. Just search on ebay for the biggest SiC crystals you can find.
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