SMPS 12VDC to +-45VDC - diyAudio
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Old 3rd March 2007, 08:22 AM   #1
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Default SMPS 12VDC to +-45VDC

Schematic Switch Mode Power Supply + Amp 300W

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http://serv2.imagehigh.com/imgss/5257475_Wave forms.jpg
http://serv2.imagehigh.com/imgss/5257479_DSC09602.JPG
http://serv2.imagehigh.com/imgss/5257567_DSC09610.JPG
http://serv2.imagehigh.com/imgss/5257568_DSC09609.JPG
http://serv2.imagehigh.com/imgss/5257569_DSC09611.JPG
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File Type: pdf smps impreso.pdf (31.4 KB, 439 views)
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Old 3rd March 2007, 09:20 PM   #2
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Default Layout

PCB layout SMPS
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Old 4th March 2007, 09:50 AM   #3
Clipped is offline Clipped  Thailand
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cool, does it work? built one yet?
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Old 8th March 2007, 11:31 PM   #4
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yes it does they are all ready working now
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Old 13th March 2007, 01:54 PM   #5
Pierre is offline Pierre  France
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Hello, Luciperro:
Very nice, but I have a few questions...

- Did you use 4+4 or 8+8 turns for the primary? And for the secondary, did you use 11+11 or 22+22?

- The transformer primary waveforms look rather triangular, you should try to use a buffer between the SG3524 and the mosfets, or reduce switching frequency for better efficiency. Did you try that?

Best regards,
Pierre
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Old 13th March 2007, 05:12 PM   #6
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Quote:
Originally posted by Pierre

....- The transformer primary waveforms look rather triangular, you should try to use a buffer between the SG3524 and the mosfets........
I think he's using an SG3525 w/totem-pole outputs.

Steve
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Old 23rd March 2007, 05:04 PM   #7
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Default Re: SMPS 12VDC to +-45VDC

Nice one!

do you have schematic of smps and amplifier?
and pcb to the amplifier?

thanks!
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Old 14th May 2007, 06:11 AM   #8
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Default Amp from SMPS

Schematic Power Amp 100W

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File Type: pdf pcb amp100w componentes.pdf (78.9 KB, 235 views)
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Old 14th May 2007, 06:13 AM   #9
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Default PCB Amp100W

Impreso cobre
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Old 26th May 2007, 01:37 PM   #10
rampa is offline rampa  Argentina
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Hi.
Dunno why ne1 post here... but i maked SMPS and amp and it work / sound great.

thx..
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