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led sign transformer |
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jeweler
Joined: May 04 2009 Posts: 7 |
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Mon Jun 15, 2009 12:51 pm
does anyone know what kind of transformer in in those led bulb signs
--like those open signs-- i made a led sign with apox 100 led bulbs and using a plug in transformer 12v 1.25 amp the transformer keeps burning up after staying on for 10 mins or so thanks pawnman69@gmail.com |
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bad venge
Joined: Jul 28 2007 Posts: 1842  1998 Dodge Avenger Last updated: 05/18/09 2005 MINI Cooper Last updated: 12/28/09 2010 MINI Cooper Last updated: 01/24/10 |
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Mon Jun 15, 2009 1:59 pm
You'd need to check the CURRENT draw of the 100+ LED's and get a Transformer/Power supply that can supply the needed current ... Since we have no idea the LED's you used Ect it's pretty hard to guess
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byte
Joined: Mar 25 2009 Posts: 311 2002 GMC Sierra Last updated: 08/06/09 1949 Lamborghini Countach Last updated: 10/08/09 1995 Chevrolet CK Pickup Last updated: 11/08/09 |
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Mon Jun 15, 2009 7:44 pm
Just as a guess of 20 mA draw for each LED times 100 would equal 2 amps.
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PwrRngr
Joined: Jul 19 2007 Posts: 3847 2003 Ford Mustang Last updated: 01/23/09 |
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Tue Jun 16, 2009 3:40 am
You need to know if there are any wired in series. You can typically wire 3-4 LEDs in series off 12V. That could easily drop the current to less than 1A |
The time now is Thu Mar 18, 2010 11:51 am