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Other companies also made center-off-knob throttles.I agree that the center-off speed control is easy to use.
Then there's this one, made for Arnold by Siemens:
Actually, I guess I knew brown and blue are current UK colors so I figured there was a change along there, at some time. 1963 is probably long enough before March of 2004 to have had red and black. Anyway, the pack works and the output is between 6 and 7 volts DC as expected. The half voltage is actually pretty good for max. speed but the current capacity is only 380 mA so definitely for only one loco at a time.It is now snug in its box and the MRC Tech III 9500 is back in place for the layout. I have had up to 10 Treble-O-Lectric locos running at once with that and it doesn't even blink.DougDoiug.Doug
I also have a Lionel HO pack, with the center off, but not quite the same case. I use the AC to power my "modern" walk-around MRC, and the DC, with two copper computer cable wires, for testing and wheel cleaning.As for Lone Star, I have no idea what pack it had, but my set, Christmas of 1967, from Wards, had a 110V power pack. I'm pretty sure it didn't look like the English pack pictured earlier.
Actually, by powering it from 110v and only getting about 6v out, you improved it! Assuming full throttle was always way too fast, you now have doubled the usable arc range on the rheostat. So you have better, more gradual control as you turn up the speed knob.
Wards had regular HO packs they sold for using with Treble-O-Lectric. My parents...er, I mean Santa... bought the little KF UL25 pack which just had DC output for the trains. They also had a pack which may have been in the same case (I have never knowingly seen one) and did have AC terminals for accessories in addition to DC terminals.Yours was probably one of them. Here's what the KF UL25 looks like:Doug
Doug: If that's what Wards sold, then that's what I probably had. I don't remember.I've never been to England, but remember, years ago, reading that they didn't have a standard electric socket, as the US does. Different regions used different sockets, and plugs, although they were all the same voltage. So, many of the cords did have just the wires, and the user supplied a plug to fit the local sockets. I don't know how true that is, but it is plausible.