I have one of these. Funny how at the time they claimed these 9 watt lamps could replace 60 watt lamps. I even had some Feit 9w ones the claimed to replace 75 watt bulbs, though the results were disappointing. Probably the reason why I never really warmed to PL lamps.
They make a 28w adapter...i have one its kinda bulky having an auto transformer ballast but it sure is blink happy and flashes very rapidly when starting