In Reply to: specifing a power transformer for pre PSU posted by genelex on April 1, 2014 at 18:48:46:
>> Would a 250-0-250v @ 500ma work?
Yes it will be fine.
About 330V before the regulator.
>> how do you know what the upper limit
>> of input voltage is for the regulator
See datasheet linked below.
Limit of 650V across the transistor
so the 110V you have is no problem.
DanL
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Follow Ups
- RE: specifing a power transformer for pre PSU - danlaudionut 22:39:00 04/01/14 (0)