What current is this transformer rated at?

[Chris Wilson]

Is there enough info to say what amperage this transformer is rated at if I try and pull either circa 13 volts, or circa 6 volts for valve filaments please? I need 12.6 and 6.3 actually, but can tweak with one of those slider type ceramic wire wound resistors in the primary I think? Thanks. If you can briefly tell me how you worked it out I would be grateful!

[M. András]

total 124va

[Rufus]

Is there enough info to say what amperage this transformer is rated at if I try and pull either circa 13 volts, or circa 6 volts for valve filaments please?

1.55A worked out by reading

It looks like there are 8 secondaries  two of each 1,3,9, and 27v. If you used them all at 1.55A that makes the shown 124VA.

The most current you can have is 1.55A or 3.1A if you put 2 secondaries in parallel.  1+3+9 would give you 13v and you could parallel.

[jimmc]

Looks like a bigger brother of the old Radiospares 'Universal Rec. Trans.'
Which would confirm 1.55A per winding.

Jim

[Chris Wilson]

OK, thanks for the info and attachment, got it sussed now, cheers!

My misunderstanding was I assumed 124VA applied to a single winding, as in I could series say the two 3 volt windings to give 6 volts. Then I was dividing 124 by 6 to get a current ability of 20 amps. I was thinking this is a mighty powerful little transformer. I now of course see it's the rating for ALL the winding together, so 1 + 3 + 9 + 27 = 40 volts. Series the two sets of series windings and you get 80 volts. 124 divided by 80 = 1.55 Amps, as the top panel says   The figure of 124 VA applies when *All* the windings are used together....