100w preamp power supply design

authlxl · 06:22 AM

Because i have project for preamp,I designed a atx switch power supply ,works stable,low ripple,low cost。
Specification here:
INPUT:AC220V/50Hz OR 60Hz
OUTPUT:+5V/1A,+15V1A,-15V1A ,+24V/3A
DIMENSION:150mm(length)*100mm(width)*40mm(heigth)

Standby power supply:+5V/1A
Main DC/DC controlled by +5v,easy to use.
+24V have 3A current deliver,It can be use for class d amp,like TI tpa3106 etc,
I upload schematic ,If anybody needed,send me mail,I can tell you detial for this SMPS.
Bom cost no more than 10USD.

authlxl · 9th January 2010, 06:10 AM

Schematic here

m-tech · 9th January 2010, 12:11 PM

What is VBAK ?
Good project. But transformers and output coils spec's are not mentioned. It's useless without them.

authlxl · 9th January 2010, 04:25 PM

Oh,sorry,Vbak conect Vcc,The ferrite transformer drawing is so complex，It is diffcuilt to control parameter when manufacture,I can help you to get it from big company.highest quality,mass product.three transformer a set need 3USD.
If you need transformer drawing for you product,please connect me.

rajudp · 13th January 2010, 01:19 AM

i am interested, please give the transformer specifications

13th January 2010, 01:19 AM	#5
rajudp diyAudio Member Join Date: Mar 2005 Location: Kerala	100w smps i am interested, please give the transformer specifications

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9th January 2010, 12:11 PM	#3
m-tech diyAudio Member Join Date: Feb 2006 Location: Belgrade	What is VBAK ? Good project. But transformers and output coils spec's are not mentioned. It's useless without them.

9th January 2010, 04:25 PM	#4
authlxl SINEWAVE ELECTRONICS CO.,LTD diyAudio Member Join Date: Jun 2006 Location: CHINA	Oh,sorry,Vbak conect Vcc,The ferrite transformer drawing is so complex，It is diffcuilt to control parameter when manufacture,I can help you to get it from big company.highest quality,mass product.three transformer a set need 3USD. If you need transformer drawing for you product,please connect me.

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