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Class D Switching Power Amplifiers and Power D/A conversion

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Old 16th May 2012, 03:53 PM   #351
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Send PCB to me nothing26@126.com
Thk. very much
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Old 18th May 2012, 02:21 PM   #352
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PCB Bigamp
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File Type: jpg power pwm module top.JPG (161.6 KB, 1314 views)
File Type: jpg power pwm module bot.JPG (111.1 KB, 1229 views)
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Old 18th May 2012, 04:24 PM   #353
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Quote:
Originally Posted by hien.t.nguyen View Post
PCB Bigamp
Nice - look forward to seeing the completed amp and test results.

Are you planning a group buy or selling the boards later on?
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Old 19th May 2012, 09:09 PM   #354
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Quote:
Originally Posted by hien.t.nguyen View Post
Sorry,i mistyped from 4ohm load become 8ohm load.

If I use 4 ohm load(full bridge),+/-100V,Pmax < 200x200/4 = 10KW(peak) = 7.07kW(rms)


Thank exactly feedback.

Regrads,
and from where are you gonna get the power to let the amp deliver that amount of power?
direct from the power plant? a 230V/16A or 115V/20A line is not gonna do the job. so what the heck is the point?
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Old 25th May 2012, 03:20 AM   #355
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no work
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Old 30th May 2012, 11:13 AM   #356
Valenca is offline Valenca  Brazil
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No work ???? the big amp ???
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Old 30th May 2012, 11:20 AM   #357
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Hi Valenca
greetings did you try it i am thinking of making it
warm regards
andrew lebon
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Old 31st May 2012, 01:48 AM   #358
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hi Valenca
yes i do it the big amp but it don't work.
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Old 4th June 2012, 10:11 AM   #359
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Default do best you can

Quote:
Originally Posted by Eva View Post
5KW at 2 ohms (20 msec) are achievable with a full bridge of IRFB4227 pairs, IR2113 with buffers, a tight layout and a good active current limiting system. I have done that.

Testing at these power levels is difficult, supply voltage sags and available power is quickly reduced to 4KW or less after 1 sec.

Note that this is neither a project for unexperienced people nor something that you can just build from a schematic.
Hi
my name is Hadi
sir please share shematic and pcb and your note for this amp on site
every body like to have some thing like your amp
sorry for my bad english
thanks so much
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Old 6th June 2012, 01:46 PM   #360
Valenca is offline Valenca  Brazil
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hi singkj,

Why not work?
Could you explain that?
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