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Old 16th March 2010, 01:12 AM   #1
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Default Transformers?

What to look for in a transformer design? As you have probably guessed I am starting off down this DIY road so I have a fair bit to learn

Transformers are a new area to me and I need to understand these a little better before I commit some cash on a pair for my new power amp project.

So what would make the ideal feature set for a pair of high quality dual mono 300wpc power amp transformers? I have seen potted designs, electrostatic screens, GOSS bands, encapsulated, which of these are important within an audio environment?

What s CT? Seen this mentioned and couldn't work this one out

How do I convert the secondary winding voltage? i.e. if a voltage of +/- 60v is needed for the amp module, how do I know that a 40-0-40 is correct? I have been told this is the right voltage which is great but in future how do I work this out?

Any other questions you think I should of asked here but haven't got confused by yet?

Thanks,
Andy
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Old 16th March 2010, 04:24 AM   #2
iko is offline iko  Canada
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Andy, there is much to explain about a power transformer. Your best bet is to start reading as much as you can and look for detailed projects which include the psu schematic and explanation.

That being said, CT stands for center-tap. It means the second winding has a tap roughly in the middle. You'd be able to measure about the same AC voltage between the middle wire and any of the other secondary winding wires.

It'd probably be best if you build a well known and specified design first.
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Old 16th March 2010, 09:25 AM   #3
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Many thanks for your reply, I have learnt something today
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