SMPS transformer

jegandren · 23rd April 2008, 06:06 AM

Hi all,

Can anyone suggest me, where can i buy a custom made center tapped swicthing transformer.

Many Thanks

TheMG · 23rd April 2008, 05:14 PM

You could built your own.

You just have to get the proper cores for your design, I'll let someone else elaborate on that since I don't know much about that yet. But yeah, empty cores with no windings are available.

Then get some appropriately sized magnet wire and wind your own.

Haven't really looked into it but seems to me it would be cheaper than custom ordering finished parts. I might even be possible to salvage the core and magnet wire from something like a computer SMPS.

jegandren · 24th April 2008, 12:57 AM

does winding our own transformer core causes more loses than custom made ones...can anyone give me some idea on winding the transformer core on our own.

Many Thanks

EWorkshop1708 · 24th April 2008, 01:18 AM

A computer SMPS transformer works GREAT!

You don't have to modify anything on it. Just connect to the taps you want to use. I just made a 12V car SMPS with one from a 550W computer power SMPS.

http://www.diyaudio.com/forums/showt...60#post1492160

Find a broken computer power supply, take transformer + other parts out, make sure transformer is center tapped, and you are good to go.

jegandren · 24th April 2008, 01:30 AM

If my input to the primary side of the transformer is +/- 167 Vdc and my output from the secondary center tapped is +/- 56 Vdc, can it be done using a computer transformer. the topology that im using here is a half bridge topology

23rd April 2008, 06:06 AM	#1
jegandren diyAudio Member Join Date: Feb 2008	SMPS transformer Hi all, Can anyone suggest me, where can i buy a custom made center tapped swicthing transformer. Many Thanks

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23rd April 2008, 05:14 PM	#2
TheMG diyAudio Member Join Date: Jan 2008	You could built your own. You just have to get the proper cores for your design, I'll let someone else elaborate on that since I don't know much about that yet. But yeah, empty cores with no windings are available. Then get some appropriately sized magnet wire and wind your own. Haven't really looked into it but seems to me it would be cheaper than custom ordering finished parts. I might even be possible to salvage the core and magnet wire from something like a computer SMPS.

24th April 2008, 12:57 AM	#3
jegandren diyAudio Member Join Date: Feb 2008	does winding our own transformer core causes more loses than custom made ones...can anyone give me some idea on winding the transformer core on our own. Many Thanks

24th April 2008, 01:18 AM	#4
EWorkshop1708 diyAudio Member Join Date: Nov 2004 Location: Florida	A computer SMPS transformer works GREAT! You don't have to modify anything on it. Just connect to the taps you want to use. I just made a 12V car SMPS with one from a 550W computer power SMPS. http://www.diyaudio.com/forums/showt...60#post1492160 Find a broken computer power supply, take transformer + other parts out, make sure transformer is center tapped, and you are good to go.

24th April 2008, 01:30 AM	#5
jegandren diyAudio Member Join Date: Feb 2008	If my input to the primary side of the transformer is +/- 167 Vdc and my output from the secondary center tapped is +/- 56 Vdc, can it be done using a computer transformer. the topology that im using here is a half bridge topology

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