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2014-02-26T12:46:52+08:00 http://www.reefphilippines.com/forums/feed.php?f=8&t=13116 2014-02-26T12:46:52+08:00 2014-02-26T12:46:52+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=208948#p208948
i think i need to layout my diy flashlight similar to that. powerbank gamit ko now as power supply. im using it when outside and tumitingintingin ng corals sa LFS.

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]]> 2014-02-26T10:28:12+08:00 2014-02-26T10:28:12+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=208946#p208946

ive searched the web yesterday for DIY 3W led drivers and this is what ive found so far...
any comments, corrections and tips will appreciated... paging mobetz again

credits to bertzen sanjibon of germany for this DIY... spraken heiten van houten
This is a very simple guide on how to make a driver for a high power 3w led with changing the resistor, you can connect up to ten high power LEDs to this circuit. All u need is

1 LM317 regulator
1 1.8 ohms resistor (1watt), if u are using only one 3w led
some wire

The LM317 regulator gives out a constant voltage of 1.25 volts between ADJ and Vout.



from left to right: resistor, regulator, 3w high power led, wire




solder wire to the cathode and anode of the 3w high power led:




the red wire has to be connected to minus of pole of the power source (on the next pic the red wire is changed to black), the black wire to the cathode of the led. The resistor connects to the regulator and the black wire;



the constant current circuit:



it's working!!!

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]]> 2012-04-30T10:43:23+08:00 2012-04-30T10:43:23+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=183151#p183151 ]]> 2012-04-29T11:31:46+08:00 2012-04-29T11:31:46+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=183120#p183120 ]]> 2012-04-29T10:40:30+08:00 2012-04-29T10:40:30+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=183116#p183116 ]]> 2012-04-28T11:54:18+08:00 2012-04-28T11:54:18+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=183081#p183081 ]]> 2012-04-28T10:27:03+08:00 2012-04-28T10:27:03+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=183076#p183076 ]]> 2012-04-28T06:01:36+08:00 2012-04-28T06:01:36+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=183072#p183072 ]]> 2012-04-27T22:57:47+08:00 2012-04-27T22:57:47+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=183063#p183063 ]]> 2012-04-27T22:40:06+08:00 2012-04-27T22:40:06+08:00 http://www.reefphilippines.com/forums/viewtopic.php?t=13116&p=183054#p183054 ]]>