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 10th February 2008, 09:55 AM #1 abiedoodles   diyAudio Member     Join Date: Dec 2006 transformer question a newbie question, is it possible to combine/parallel two identical transformer to make a voltage/amperes higher? like 2x 12v/3amp transformer combined to make 24v/6amp: positive+positive negative+negative. http://hifiview.com/ Last edited by abiedoodles; 23rd April 2012 at 10:06 PM.
 10th February 2008, 10:40 AM #2 dhaen   diyAudio Moderator Emeritus     Join Date: Jun 2002 Location: U.K. As long as they are truly identical, then it's acceptable to connect all secondary leads in parallel. A better way might be to connect each transformer for 12v 6a (by paralleling secondary) and connect these in series. This would also be acceptable for non-identical transformers. Remember there is no +ve or -ve as we are dealing with AC here. It's phase that matters
 10th February 2008, 11:05 AM #3 woody diyAudio Member   Join Date: Jan 2002 Location: Tyrone Ga. U.S.A. No. 2 12v 3a transformers in parallel will be 12v 6a 2 12v 3a in seriese will be 24v 3a It may be helpful to add the term VA. VA or volt amp is the amount of power . For a 12v 3a transformer this works out to 12v x 3a = 36va . So when you add 2 12v 3a transformers in parelle you get 12v X 6a or 72va 36va from each transformer. Now if you use a full wave bridge rectifier and 2 capacitors with 2 seriese connected 12v 3a transformers you can come up with ~ +15v = and ~ -15v. But the amp rating of the 15v supplies will be a lot less than 3a.
 10th February 2008, 11:35 AM #4 abiedoodles   diyAudio Member     Join Date: Dec 2006 thanks for the reply, i might use in gainclone as i have a bunch of this available.

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