ucd 25 watts to 1200 watts using 2 mosfets - Page 5

qsa · 15th May 2010, 09:02 AM

Quote:

Originally Posted by rezamir

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

rezamir · 15th May 2010, 02:24 PM

I had used the irfp460
I had used was from the pcb file ir2011 ucd

rezamir · 15th May 2010, 02:32 PM

this is my pcd

qsa · 15th May 2010, 11:12 PM

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

rezamir · 16th May 2010, 06:21 AM

Hello my friend
My wrong is right ir2110
I could listen to music, but low power
Are you created this Amplifier?

trb4 · 16th May 2010, 08:20 AM

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

qsa · 16th May 2010, 08:23 AM

Quote:

Originally Posted by rezamir

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

qsa · 16th May 2010, 09:29 AM

Quote:

Originally Posted by rezamir

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

andrewlebon · 16th May 2010, 03:09 PM

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

rezamir · 17th May 2010, 06:24 AM

Hi

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15th May 2010, 02:24 PM	#42
rezamir diyAudio Member Join Date: Jul 2007	I had used the irfp460 I had used was from the pcb file ir2011 ucd

15th May 2010, 11:12 PM	#44
qsa diyAudio Member Join Date: May 2007	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

16th May 2010, 06:21 AM	#45
rezamir diyAudio Member Join Date: Jul 2007	Hello my friend My wrong is right ir2110 I could listen to music, but low power Are you created this Amplifier?

16th May 2010, 08:20 AM	#46
trb4 diyAudio Member Join Date: Aug 2004 Location: Palermo	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

16th May 2010, 03:09 PM	#49
andrewlebon diyAudio Member Join Date: Feb 2008	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

17th May 2010, 06:24 AM	#50
rezamir diyAudio Member Join Date: Jul 2007	Hi You About Search 1N5817