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method to drive and control brightness of Luxeon 1A led

 
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dilan2005



Joined: 22 Jul 2007
Posts: 74
Helped: 6


Post17 Apr 2008 5:33   method to drive and control brightness of Luxeon 1A led

hi,

i need some design on to drive luxeon led and control the brightness of it.it is better if the design is a swichmode type current source so i can vary the current and change the brightness of the led.

please post your suggestion about this!

Thanks a lot!

rgds
dilan
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linoko



Joined: 25 Jun 2004
Posts: 38
Helped: 2


Post17 Apr 2008 10:14   Re: method to drive and control brightness of Luxeon 1A led

hi,
may be this it will be useful for you: http://www.edaboard.com/viewtopic.php?t=264596&highlight=
bye good luck
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largosoft



Joined: 01 Mar 2008
Posts: 7


Post24 Apr 2008 13:40   Re: method to drive and control brightness of Luxeon 1A led

Schematic Switching Supply For Luxeon Star LEDs


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largosoft



Joined: 01 Mar 2008
Posts: 7


Post24 Apr 2008 13:43   Re: method to drive and control brightness of Luxeon 1A led

Layout Switching Supply For Luxeon Star LEDs


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largosoft



Joined: 01 Mar 2008
Posts: 7


Post24 Apr 2008 13:44   Re: method to drive and control brightness of Luxeon 1A led

PCB Switching Supply For Luxeon Star LEDs


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largosoft



Joined: 01 Mar 2008
Posts: 7


Post24 Apr 2008 13:46   Re: method to drive and control brightness of Luxeon 1A led

Table resistor Switching Supply For Luxeon Star LEDs


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dilan2005



Joined: 22 Jul 2007
Posts: 74
Helped: 6


Post29 Apr 2008 21:12   Re: method to drive and control brightness of Luxeon 1A led

i really appreciate your help guys!
ultimately i find a simple ( not very much energy efficient method ) to control the brightness of a led using N mosfet (IRF540) and linear regulator. (lm317 as current source)

i have attached my sch to control brightness using a pic micro controller.



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septer012



Joined: 18 Jun 2008
Posts: 17
Helped: 2


Post25 Jun 2008 1:23   Re: method to drive and control brightness of Luxeon 1A led

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