I don't think the last message went through because of the attachment, so h=
ere it is again.

You might still be hitting the ceiling anyway due to the pulsed nature of t=
he input. Have you tried looking at the current waveform with an oscillosco=
pe? That way you will know for sure that the current is actually going up w=
ithout an increase in apparent brightness. The only other thing I could sug=
gest is putting another capacitor across the LED and possibly using a diode=
 bridge to get full wave rectification. Here is an example of a commercial =
nite light circuit.

http://i.imgur.com/JrRvKVa.gif 		 	   		 =20
--=20
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