We are looking to possibly impliment the LNK460KG for a T8 flourescent fixture. Your DER337 design is almost an exact fit except for one minor problem, we need a truly universal input range of 80-277VAC, 50-60hz. Is there a simple solution to extending the input voltage down to the lower voltages? I have seen circuits implimenting valley-fill methods on the input side - would something of this nature work? I haven't been able to download the new software for some reason, so I can't put in any data for this device. Any help would be appreciated. Thanks.