led brightness control

Thread Starter

tibbles

Joined Jun 27, 2008
249
i am using a high brightness LED to illiminate an area, but need to dim it occassionally.so i rigged up a 330r stop resisstor in series with a 500 ohm pot.
unfortunately, predictably i suppose, its rubbish, the led varies hardly at all.
i spose i could put up with it but if anyone can suggest something not too involved, a simple pwm perhaps,it would be much appreciated.

many thanks
dougal

according to the spec need 330 ohm =30 ma forward current
 
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