[sdiy] Transformer question

[Paul Perry]

I'm sure the 15AC would be fine.
15v AC gives peak 22v rectified, plenty of room for the rectifier
diode drops & the regulator headroom.
Use at least 25V rated caps.

paul perry Melbourne Australia

----- Original Message ----- 
From: "Mykolas"> Hi guys,
>
> I'm about to build ±15V psu using LM317/LM337, but there is question
> about transformer. In my local shops I can get 2x15V 1A rated
> transformer, but not bigger :( there is option 2x18V 2x1.1A (but it
> has couple more secondaries), link:
> http://www.evita.lt/en/det-1562-transformer-tp60-9-2x18v-2x1.1a-10.6v-0.6a-5v-0.5a.html
>
> Can I use 2x15V 1A transformer or do go with 2x18V and leave secondaries 
> free.
>
> Many thanks.