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Toroidal Transformer connecting to dual 12v input amplifer circuits.

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Count Yorga

New Member
Hi, I am playing around with amplifier circuits. I have a preamp circuit and a power amp circuit. Both of these require 'dual' 12v AC inputs. My question is how do I connect a Toroidal 220v primary transformer with 3 secondary output wires (yellow, black, yellow) Do I need a 6-0-6 output transformer (as the two 6v combine to make 12v) or do I use a 12-0-12 as the two 12v supplies are not combined? I just need to be sure I'm not going to inadvertently blow everything up.

These are the preamp, power amp, and transformer I am wishing to use. I do not require advice regarding the products themselves, these are what I want to use. I just need advice regarding the transformer and connecting it to provide 12v AC to each of these units. Thanks in advance.



 

crutschow

Well-Known Member
Most Helpful Member
If the amplifiers need dual 12Vac supplies, then the transformer should be 12-0-12.
 

audioguru

Well-Known Member
Most Helpful Member
Ebay knows nothing about electronics. The no-name-brand preamp does not say it needs a dual DC supply or a dual AC supply.
The transformer produces only AC, not DC.
 

Count Yorga

New Member
Ebay knows nothing about electronics. The no-name-brand preamp does not say it needs a dual DC supply or a dual AC supply.
The transformer produces only AC, not DC.
The board appears to have a rectifier integrated into it, so I would think you could use either.
 

Ramussons

Active Member
From the photos, Both The Power Amp and the Preamp are designed for a x - 0 - x AC input, so a 12-0-12 or a 15-0-15 ac input should be fine.
 
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