Transformers?

andyjayh · 16th March 2010, 12:12 AM

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

ikoflexer · 16th March 2010, 03:24 AM

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.

andyjayh · 16th March 2010, 08:25 AM

Many thanks for your reply, I have learnt something today

16th March 2010, 12:12 AM	#1
andyjayh diyAudio Member Join Date: Mar 2010	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 __________________ Source: ASRock with XBMC, SkyHD, Teac VRDS 10 modified DAC, SB3 Proc/Amps: Proceed AVP2, Musical Fidelity AS100, Rotel RB985 Speakers: Monitor Audio GR20, GR LCR, B&W DS3, REL STIII sub Displays: Pana plasma, Sanyo Z1 proj Misc: Isotek Sub G2 & Elite cables

16th March 2010, 08:25 AM	#3
andyjayh diyAudio Member Join Date: Mar 2010	Many thanks for your reply, I have learnt something today __________________ Source: ASRock with XBMC, SkyHD, Teac VRDS 10 modified DAC, SB3 Proc/Amps: Proceed AVP2, Musical Fidelity AS100, Rotel RB985 Speakers: Monitor Audio GR20, GR LCR, B&W DS3, REL STIII sub Displays: Pana plasma, Sanyo Z1 proj Misc: Isotek Sub G2 & Elite cables

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
More transformers	Zero Cool	Swap Meet	5	6th June 2010 07:23 PM
Help identifying a pair of output transformers and power transformers	mjk130	Parts	3	30th January 2009 10:44 AM
Various transformers	Clutz	Tubes / Valves	4	16th April 2006 03:48 AM
Back to Back transformers as Isolation transformers	mikee55	Chip Amps	2	17th March 2006 11:38 AM
transformers	Joe912	Chip Amps	8	3rd April 2004 01:34 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

16th March 2010, 03:24 AM	#2
ikoflexer diyAudio Moderator Join Date: May 2008 Location: Toronto	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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)