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Author Topic: driving leds  (Read 1642 times)

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windrules

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driving leds
« on: October 19, 2004, 09:59:06 PM »
Hi everyone,

           I have played with small LEDs before using small transformer chips and resistors,

which work good but what is the propper way to drive 1 watt and 3 watt LEDs?Some people have told me you need to use switchmode power supplies,but these seem expensive and there seems little info on this anywhere.

Thanks for your help,

Kind regards,

Mos
« Last Edit: October 19, 2004, 09:59:06 PM by (unknown) »
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tawa

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Re: driving leds
« Reply #1 on: October 21, 2004, 01:44:59 PM »
Are you talking about the Luxeon assemblies? Most other white LEDs run at around 3.6v times .02 amps.

« Last Edit: October 21, 2004, 01:44:59 PM by tawa »
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windrules

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Re: driving leds
« Reply #2 on: October 21, 2004, 07:01:29 PM »
Yes the luxeon type leds. Most people seem to drive them with a puck or other fancy expensive divices that I don't think is nessecary.

Thanks,

Mos
« Last Edit: October 21, 2004, 07:01:29 PM by windrules »
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ghurd

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Re: driving leds
« Reply #3 on: October 22, 2004, 07:44:57 AM »
Just keep the current at or below what it calls for.


Keep it as cool as possible.


Be ready for disapointment.


G-

« Last Edit: October 22, 2004, 07:44:57 AM by ghurd »
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tawa

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Re: driving leds
« Reply #4 on: October 25, 2004, 10:21:36 AM »
Yeah. Those type of high-power LEDs require a heat sink, and a good one at that.

« Last Edit: October 25, 2004, 10:21:36 AM by tawa »
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