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Old 3rd May 2010, 08:34 AM   #251
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Old 3rd May 2010, 05:42 PM   #252
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Wink Hello

Quote:
Originally Posted by 81bas View Post
only if it will help you to finish your super-duper professional 4kw SMPS...
You still have to answer my previous question friend.
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Old 4th May 2010, 03:53 AM   #253
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Originally Posted by ionutgaga View Post
Not quite 6000w, but interesting simple classD topology: IRFB4227, Ir2110, LM319, deadtime with 74HC14, bridge +/-75v, 8 ohm in powered speaker with RCF MB15H401 and Precision Devices PDC2.
It works very well in full range, it is selfoscillating , 400khz at idle, but in this powered speaker i have an active processing, with class AB for highs.
LE. I know that inductors not have optimum position, but it works well, no parasitics.
the eschematic? for pless
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Old 4th May 2010, 04:09 AM   #254
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Old 4th May 2010, 09:30 AM   #255
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Originally Posted by microsim444 View Post
You still have to answer my previous question friend.
I do not have to, but you can find the answer in schematics in posts #1 or #2 in this thread

Last edited by 81bas; 4th May 2010 at 09:34 AM.
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Old 25th July 2010, 03:34 PM   #256
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if is possible i want pcb desin this amp irs2092_6kw my mail is malbasicradan@gmail.com
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Old 11th August 2010, 10:39 AM   #257
opor is offline opor  Thailand
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Hi,
I have finish this amp with some modifiaction . But I have the problem when start it up. DC offset is about 500mV .There should be something wrong. But I could not find.So I need help.
This is my schematic.
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File Type: pdf myIR2092V2.pdf (26.5 KB, 977 views)
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Old 11th August 2010, 10:46 AM   #258
opor is offline opor  Thailand
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Hi Sorry,
This is lastest shematic. My supply is +-70V.
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File Type: pdf myIR2092V2.pdf (26.5 KB, 1183 views)
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Old 11th August 2010, 03:50 PM   #259
opor is offline opor  Thailand
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Hi,
I gave you wrong informations. DC offset is 26.7V!!! at start up not 500mV. So I have put 1Kohm resistor between output and GND ,DC offset is down to 500mV but just a second it goes to 70V. Why?
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Old 11th August 2010, 03:51 PM   #260
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And this resistor is getting warm.
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