Transformer question

[Mark Dittmar]

        Hi-

        I am trying to construct a 250 VDC @ 130 mA power supply.  I have
an isolation transformer,  115/115 rated at 35 VA.  I would like to
voltage double the output of this transformer up to the required 250 VDC.
How do I determine if this transformer can handle the job ?  250 VDC*130
mADC = 32.5 Watts,  not really the same as 32.5 VA, which holds for AC
values of voltage and current,  correct ?  Should I being thinking in
terms of average values ?

        What numbers should I be using in my calculations ?

        Thanks,

        Mark, AB0CW

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