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Old 15th May 2010, 10:02 AM   #41
qsa is offline qsa  Germany
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Quote:
Originally Posted by rezamir View Post
Hi all
m1 & m2 After a few seconds is too hot
can you send pictuure of your PCB ?

Oscillating Mosfets ?

which Mosfets do you use and how much Rail
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Old 15th May 2010, 03:24 PM   #42
rezamir is offline rezamir  Iran
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I had used the irfp460
I had used was from the pcb file ir2011 ucd
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Old 15th May 2010, 03:32 PM   #43
rezamir is offline rezamir  Iran
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this is my pcd
Attached Images
File Type: bmp ir2110ucd.bmp (158.2 KB, 2676 views)
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Old 16th May 2010, 12:12 AM   #44
qsa is offline qsa  Germany
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can you make some tests ?

1. IRFP 460 is different compare to Mosfets in original design

2. can you check about stray inductane or oscillation in output stage ?

3. Did you use right component value for Rail Voltage ?

4. Does this amp working, can you listen music ?

Finally,... is it possibile 2011 ucd design and schematic is a fake ?

or impossibile for stable working


regards
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Old 16th May 2010, 07:21 AM   #45
rezamir is offline rezamir  Iran
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Hello my friend
My wrong is right ir2110
I could listen to music, but low power
Are you created this Amplifier?
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Old 16th May 2010, 09:20 AM   #46
trb4 is offline trb4  Italy
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HI, i built this amplifier and output sound is OK, but i have two problems:
- output coil is very hot, every time
-is there a dc offset about 250mV

My power supply is +-45V and speaker impedance is 8ohm.

Any idea?

Thanks
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Old 16th May 2010, 09:23 AM   #47
qsa is offline qsa  Germany
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Quote:
Originally Posted by rezamir View Post
Hello my friend
My wrong is right ir2110
I could listen to music, but low power
Are you created this Amplifier?
actually Im designing PCB LAYOUT for Test and will be finished in about 1 or 2 days

I hope I dont waste my time
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Old 16th May 2010, 10:29 AM   #48
qsa is offline qsa  Germany
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Quote:
Originally Posted by rezamir View Post
Hello my friend
My wrong is right ir2110
I could listen to music, but low power
Are you created this Amplifier?

What do you mean with right IR2110....Fake IC ?

but it can be you need another Mosfets..lower Input Cap or RDS on
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Old 16th May 2010, 04:09 PM   #49
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hi
greetings reading spanish forum ic shown on pcb is ir2113 schematic shows
it ir2110 is it possible on amplifier built by tatacom
1 any substitute for diode in5189
2 details of coil 33uh wire diameter no of turns core diameter

thanking you
andrew lebon
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Old 17th May 2010, 07:24 AM   #50
rezamir is offline rezamir  Iran
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Hi
You About Search 1N5817
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