Estimating VA rating of toroid

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I have a 25-year old toroid which I don't know the VA rating of.
IT is the Transductor brand with a label saying number 6050.
My memory tells me it is a 300VA, but I am definitely not sure
about this. Comparing its physical dimension some modern
toroids of varying brands it matches those of 200 - 225VA.
Intuitively, this seems a reasonable way to determine the
rating, so can I assume it is approx. a 200VA one?

Edit: Hm, guess this one should have gone inte "Electronics
and Parts" instead, but never mind.
 
Thanks Per-Anders,
unfortunately I don't have the weight of it since it is mounted in
lab PSU I built some 25 years ago. I am afraid I would not get
this messy thing back into working order if trying to take out
the transformer to weigh it. On the other hand, this PSU has
never been working very well and the reason I want to know
the transformer rating is that I plan to redesign the PSU from
scratch and reuse parts from it.

I didn't know that Toroid is former Transduktor, but now I had
a look at Toroids web page, and indeed they are using the old
Transduktor logo.
 
Christer said:
I didn't know that Toroid is former Transduktor, but now I had
a look at Toroids web page, and indeed they are using the old
Transduktor logo.

Transduktor was the big company, later bought by Ulveco. Ulveco was bought by Toroid Transformer. The logo of Toroid was changed from a "transformer" to the hedgehog logo which Transduktor had.
 

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Thanks Jocko,

Then the problem is reduced to estimating the size of the
core without having to unwind the transformer. :)

Perhaps not of so much help in this case, but certainly a
useful chart for estimating non-toroids where it is easier
to measure the crossection of the core.
 
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