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Old 15th February 2012, 02:19 PM   #1631
CPX is offline CPX  Romania
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To everyone who made this amplifier succesfully...
Please measure THD and IMD and frequency response..
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Old 15th February 2012, 02:38 PM   #1632
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Default bridging ucd amplifier

hello
greetings having built 2 channels sucessfully and using it at 50 volts dc supply just want to know if this amp can be bridged with external bridging circuit
please just finding my feet in D CLASS hoping for some help from all
warm regards
andrew lebon
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Old 15th February 2012, 02:52 PM   #1633
CPX is offline CPX  Romania
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Yes it can..but aditional filtring and sw frequency adjusment is needed..
Please measure distorsions ...
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Old 16th February 2012, 06:00 PM   #1634
akraj is offline akraj  Bangladesh
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Hi All:

here is the PCB design on majontm. Going to print and check the performance, any feedback/suggestion before I do this?

Thanks in advance

Note: change file extension .pdf to .pcb.
Attached Files
File Type: pdf Copy of UCD_India.pdf (60.0 KB, 658 views)
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Old 16th February 2012, 06:42 PM   #1635
CPX is offline CPX  Romania
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Express pcb gives an error.What software do you use?
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Old 16th February 2012, 07:35 PM   #1636
akraj is offline akraj  Bangladesh
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EasyPC version 9
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Old 16th February 2012, 08:20 PM   #1637
CPX is offline CPX  Romania
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Ok..i nedd schematics.
But for straters these are the problems:
-very long path form ir2110 to fets.
-fets to far apart
-no fets snubers
-no ground plane and ground with loops and very long
-no local decoupling

I am sorry..but your board is VERY bad...DO NOT try to make it..use the authors board or my board for inspiration.
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Old 17th February 2012, 02:17 AM   #1638
akraj is offline akraj  Bangladesh
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Quote:
Originally Posted by akraj View Post
Hi Manoj:

Electronics is my hobby and mostly excited for amplifiers, I am trying to make a class D amp using your schematic. Now can you please tell me what is meant with (SD) sing (Pin 11 of IRS2110)? And can I find the inductors in the market?

Here is the link of PCB: https://www.cx.com/mycx/share/kBI-n1.../UCD_India.pcb

Not finished yet, need to improve tracks.

Thanks in advance.
Raj
I got it CPX, no surprise for me, thanks for taking time to check and feebacks. will try to improve in future.

here is the schematic CPX; can you please gide me which PCB to use. I mean kindly share your one. Would be greatful...

Last edited by akraj; 17th February 2012 at 02:23 AM.
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Old 17th February 2012, 11:56 AM   #1639
CPX is offline CPX  Romania
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Where is the schematic .Thee is only a pcb there.
I have sent pm with 2 pcbs.

Last edited by CPX; 17th February 2012 at 12:09 PM.
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Old 17th February 2012, 12:16 PM   #1640
akraj is offline akraj  Bangladesh
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here it is. sorry...
Attached Files
File Type: pdf UCD_India.pdf (15.4 KB, 495 views)
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