What are the model numbers and the names on your three adapters? Pics of them would be great . . .

. . . found this one bundled with a 150 PartsBook on eBay. It's exactly the same, spec and all, as my M5651(APS-20U) I'll take some pics of my three later. I'd like to get a pic and 411 on every iteration of this adapter type into a stickied topic.
edit: found of one the same as mine as well . . .

Nice shot of a Quicktake 150 w/AC Adapter. Can anyone sharpen & read it or supply the specs from your collection?