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Class D Switching Power Amplifiers and Power D/A conversion

Philips UCD application note
Philips UCD application note
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Old 30th July 2007, 02:24 PM   #451
lumanauw is offline lumanauw  Indonesia
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Hi, IVX,

Could you give a clue, which Philips/Yamaha receiver does it comes from?
I cannot read the webpage, it is in Russian.
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Old 30th July 2007, 02:36 PM   #452
IVX is offline IVX  Russian Federation
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I dunno, it's just my analitical guessing (exclusively Philips parts numbering system, also i saw similar Yamaha dvx s200 with OEM UcD amp PCB from Philips), on the site no info about this pdf, this site is a repairers community.
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Old 31st July 2007, 02:54 AM   #453
TOINO is offline TOINO  Portugal
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Hi people

I know and I have that schematic from 3 Philips Hi-Fi equipments:

FW-M589 (14.9Mbytes pdf)
FW-M730 (19.7Mbytes pdf)
DFR9000 (27.1Mbytes pdf)

Much bigger than your email box, i suppose...?
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Old 31st July 2007, 06:27 AM   #454
luka is offline luka  Slovenia
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Philips UCD application note
Hi

Can you send me all 3?
luka_kurincic@t-2.net
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Old 3rd August 2007, 04:18 PM   #455
mhtplsh is offline mhtplsh  India
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TOINO

Quote:
I have that schematic from 3 Philips Hi-Fi equipments:
Can u upload at some file sharing server?
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Old 3rd August 2007, 09:03 PM   #456
eltonseemann is offline eltonseemann  Brazil
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Old 3rd August 2007, 10:28 PM   #457
TOINO is offline TOINO  Portugal
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Sorry…I can’t help everybody.
Now you know the equipment references. That is the difficult part.

Last night I have found another one with UCD, but have not the schematic.
They call the amplifier module CUD-S400 . It is what is marked on pcb.

The output transistors are 2SK3607-01MR
Turn off transistors 2SA1954
Drv BC857CW
Gate diodes BAS316.
Cascodes between comparator and driver 2SC2713
Input BC856BW

Suply regulated SMPS +44V -44V

YAMAHA portable Pa system “STAGEPAS 500”
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Old 4th August 2007, 06:33 PM   #458
jaya000 is offline jaya000  India
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TOINO:
Quote:
Sorry…I can’t help everybody.
As mhtplsh suggested u can just once upload instead of sending everybody.
It was the easiest way to help all those needed.

Hv anybody actually made some amplifier based on UCD application note?
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Old 4th August 2007, 06:48 PM   #459
BWRX is offline BWRX  United States
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Quote:
Originally posted by jaya000
Hv anybody actually made some amplifier based on UCD application note?
Have you read the thread!?!
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Old 4th August 2007, 07:00 PM   #460
eltonseemann is offline eltonseemann  Brazil
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Yes, perfectly. Take care which layout, or use the reference layout
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