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Old 9th January 2010, 06:06 AM   #1
authlxl is offline authlxl  China
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Default 100w preamp atx switch power supply design

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.
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Last edited by authlxl; 9th January 2010 at 06:22 AM. Reason: repair
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Old 9th January 2010, 06:10 AM   #2
authlxl is offline authlxl  China
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Schematic here
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Old 9th January 2010, 12:11 PM   #3
m-tech is offline m-tech  Serbia
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What is VBAK ?
Good project. But transformers and output coils spec's are not mentioned. It's useless without them.
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Old 9th January 2010, 04:25 PM   #4
authlxl is offline authlxl  China
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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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Old 13th January 2010, 01:19 AM   #5
rajudp is offline rajudp  India
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Default 100w smps

i am interested, please give the transformer specifications
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