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Old 19th February 2012, 03:56 PM   #1
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Default Power Amplifier and Power Supply Full PWM

Hi All.

I like the products amplifier high efficience,compact,friendly environment.
The new year, I have free time,I had perfect layout of Power Amplifier and Power Supply


I call them are L25De and PSL25De,it is the old circuit,nothing new,many people have made.But I layout again truly compact and simply,I want people jointly with me in this project.

L25De: 250W/8ohm,500W/4ohm(Parallel)
or 500W/4ohm,1000W/2Ohm single chanel with attachment option

I will provide full schematic,layout,partlist,...for everybody to do
There are circuit L25De
L25De Normal version:IRS2092S,IRFI4020H-117P
L25De special vesion: IRF2092S,IRFB5620PBF
Attached Images
File Type: gif L25De sch.GIF (53.0 KB, 1970 views)
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Old 19th February 2012, 04:01 PM   #2
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Part list L25De
Attached Images
File Type: gif partlist.GIF (104.1 KB, 1872 views)
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Old 19th February 2012, 04:14 PM   #3
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PCB stereo size: W100mm x L93mm
Heatsink: 100mm x 15mm x 40mm
Attached Images
File Type: gif L25De pcball.GIF (57.7 KB, 1757 views)
File Type: gif top.GIF (25.7 KB, 1647 views)
File Type: gif ssb.GIF (17.4 KB, 1592 views)
File Type: gif bot.GIF (33.2 KB, 593 views)
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Old 19th February 2012, 04:22 PM   #4
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Special version use two mosfet IRFB5620PBR replace for IRFI4020H-117P

PCB of 2 IRFB5620PBF size: 25mm x 9.5mm
Attached Images
File Type: gif irfb5620.GIF (19.1 KB, 546 views)
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Old 19th February 2012, 04:33 PM   #5
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SMPS is edition of K6 power supply relayout

Include main PCB(power) and sub PCB(PWM)
Attached Images
File Type: gif k6.GIF (35.4 KB, 850 views)
File Type: gif k6p2.GIF (15.9 KB, 895 views)
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Old 19th February 2012, 04:44 PM   #6
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Sub PCB (PWM) use SG3525,LM258 All is SMD type

PCB size very small: 28x40mm
Attached Images
File Type: gif sps1.GIF (31.2 KB, 813 views)
File Type: gif sps2.GIF (24.4 KB, 357 views)
File Type: gif sps3.GIF (13.8 KB, 313 views)
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Old 19th February 2012, 04:57 PM   #7
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Main PCB size: 100x200mm
Attached Images
File Type: gif mps1.GIF (20.0 KB, 523 views)
File Type: gif mps2.GIF (13.0 KB, 523 views)
File Type: gif sps4.GIF (25.7 KB, 450 views)
File Type: gif mps3.GIF (2.6 KB, 382 views)
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Old 19th February 2012, 05:06 PM   #8
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If everybody to do, I can mounting components SMD on PCB,other components also I can buy group and share for all.

Minimium quantity I can do :20pcs single or block
Expected price about
-40$ for L25De (full)
-80$ for PSL25De(full)-1000W smps


Invite people registration list!
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Last edited by hien.t.nguyen; 19th February 2012 at 05:10 PM.
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Old 19th February 2012, 05:18 PM   #9
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Power linear for those do not like SMPS

PCB size: 100x100mm (= size L25De)
Attached Images
File Type: gif pl1.GIF (21.7 KB, 301 views)
File Type: gif pl2.GIF (17.8 KB, 216 views)
File Type: gif pl3.GIF (19.2 KB, 187 views)
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Old 19th February 2012, 05:21 PM   #10
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Your www.ultraudio.net does not work. I want to see PDF schematics. I am really interested in such a product. I have been planning a 5ch L25D from LJM (zoe_tsang) from ebay.

Please get your website online and provide more data please
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