You haven't said what current.
A centre tapped transformer of 28-0-28 vac would give -/+40 volts DC, and a little higher off load.
Is the -/+60 for driver stages/front end. If so and it's low current a voltage doubler and regulator would mean you could derive it from the 28-0-28.
If it's the other way round, you need a 40-0-40 vac transformer to give -/+60 volts approximately and use a regulator to derive your 45 volt rails.
Or use two transformers.... messy
A centre tapped transformer of 28-0-28 vac would give -/+40 volts DC, and a little higher off load.
Is the -/+60 for driver stages/front end. If so and it's low current a voltage doubler and regulator would mean you could derive it from the 28-0-28.
If it's the other way round, you need a 40-0-40 vac transformer to give -/+60 volts approximately and use a regulator to derive your 45 volt rails.
Or use two transformers.... messy
Then the "easiest" is the single transformer and using a doubler for the low current 60 volts rail.
Next easiest is two off the shelf transformers.
Folowed by paying for a custom wound job.
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