I have an old pre-war 100-watt type “T” transformer. Used it for accessories years ago, but its been sitting since. I gave it a new power cord. Voltage on all posts tested OK. I hooked it up to a track, and at the lowest variable voltage (maybe 5 volts) the locomotive flew. Had I not immediately shut it down, it would have landed on the other side of the room. And this was just a little scout steamer.
I never tried to run a train with this transformer before. Anybody have any ideas what is happening here?
Thanks.
What terminals were you using?
That would give you 17 to 25 volts. No wonder your locomotive behaved that way!
Try B and U, for 10 to 18 volts; or C and U, 2 to 10 volts.
Bob,
I don’t have any documentation for a “T” transformer. I just hooked it up like the newer stuff. It sounds like the “T” transformer is different. Or is this rather a characteristic of pre-war transformers?
There is a long list of terminal combinations and voltages on the nameplate, as you might imagine is necessary with the 9 terminals of the T. In case the fine print of yours is illegible, here is what mine says:
C TO D 2 VOLTS
C TO E 4 VOLTS
C TO F 6 VOLTS
C TO G 8 VOLTS
C TO H 10 VOLTS
B TO C 8 VOLTS
B TO D 10 VOLTS
B TO E 12 VOLTS
B TO F 14 VOLTS
B TO G 16 VOLTS
B TO H 18 VOLTS
A TO B 7 VOLTS
A TO C 15 VOLTS
A TO D 17 VOLTS
A TO E 19 VOLTS
A TO F 21 VOLTS
A TO G 23 VOLTS
A TO H 25 VOLTS
VOLTAGES OBTAINED WHEN USING SWITCH
C TO U - 2-4-6-8-10 VOLTS
B TO U - 10-12-14-16-18 VOLTS
A TO U - 17-19-21-23-25 VOLTS
Bob,
No, I can’t make out the writing on mine. Thank you for the list.