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Dual rail PSU - Transformer compatibility
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Stavros



Joined: Oct 30, 2007
Posts: 27
Location: Athens-Greece

PostPosted: Mon Nov 19, 2012 6:08 am    Post subject: Dual rail PSU - Transformer compatibility Reply with quote  Mark this post and the followings unread

I will appreciate any help on my following two questions

I have a dual rail small power supply (+ 12, -12VDC) requiring a 2x15V Non Tapped Transformer (the PSU has two bridges requiring 4 AC cables in).
I have readily available a 2x15V Center Tapped Transformer (3 cables).
Could this Center Tapped one be used somehow, or I need to buy a new Non Center Tapped Transformer?

If a Transformer is quite large (3 or 4 times of a PSU requirement), could a second similar PSU also be connected to the same Transformer (parallel to the first one)?
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PHOBoS



Joined: Jan 14, 2010
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PostPosted: Mon Nov 19, 2012 9:00 am    Post subject: Re: Dual rail PSU - Transformer compatibility Reply with quote  Mark this post and the followings unread

I would say yes,. you can use the center tapped transformer, just split the center tap into 2 wires so you'll end up with 4.
(I often do the opposite,. connect the windings to get a center tap).

As for using multiple PSU"s on one transformer,. I don't see why that would be a problem. I mean it's just like
hooking up multiple things your mains voltage (which is also the output of a transformer).

But maybe I'm completely wrong here, so better wait for some confirmation from someone else Wink

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