this is what I am thinking....
I have a 18V supply and I have to drop it down to 4V so that means I have to drop 14 V with a resister.
so if I tak the Volts I have to drop and devide it by the curent of the LED I should get my resister rating.. so 14/0.02 = 700.. so I am thinking I need 700 Ohm resister.. so I will set up to the next highest to be safe..
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.
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