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Class D Switching Power Amplifiers and Power D/A conversion

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Old 2nd April 2012, 02:37 PM   #1
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Default i need helping to build class D audio amplifier in 1 week

i have to build class D audio amplifier and i m really stack .... i m in Malaysia can any body help
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Old 2nd April 2012, 04:15 PM   #2
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plz guys any replay
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Old 2nd April 2012, 08:26 PM   #3
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Quote:
Originally Posted by bsm225 View Post
i have to build class D audio amplifier and i m really stack .... i m in Malaysia can any body help
Hi,
What type? Power range? your capability? Which components you can access? etc. etc. If you would be clear, i think people can help much more than you expect!
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Old 3rd April 2012, 01:31 AM   #4
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ok ... class D audio amplifier. the power range is +20,-20 ,,, the output power 50W... the components no problem i can mange get them
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Old 3rd April 2012, 04:51 PM   #5
Davet is offline Davet  United States
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Default A Possible Solution

Take a look at Arjen Helder HiFi. He has various boards that should meet you specifications.

There are other vendors on eBay that may meet your requirements as well. Do a search for "T-Amp".
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Old 3rd April 2012, 05:00 PM   #6
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thx Davet .. but wat i want is an easy schematic for class d amplifier that do not give much trouble in week .... i m really stuck
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Old 3rd April 2012, 05:23 PM   #7
gmarsh is offline gmarsh  Canada
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Does it have to be class D? Easiest method to get a 50W amplifier might be a LM3875 or LM3886 based, class-AB chip-amp.

Chip-amps are also far more tolerant of layout problems than class D, which means they're much easier to breadboard/prototype. You don't want to build a class D amplifier on a breadboard. Parts acquisition is also a lot easier, as far as finding things like appropriate inductors/capacitors for the output filter.
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Old 3rd April 2012, 06:00 PM   #8
stoc005 is online now stoc005  United States
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Search the International Rectifier site. Lots of schematics/App. notes of Class D amps. Some simple...some not so much.

Here: International Rectifier - Audio Reference Design Kits
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Old 3rd April 2012, 06:25 PM   #9
syklab is offline syklab  Hong Kong
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How about build around the TI TPA3106D1? The TPA3106D1 is a 40-W efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. The TPA3106D1 can drive stereo speakers as low as 4.
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Old 4th April 2012, 01:53 AM   #10
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thax guys .... yes it should be class d ..... i will try those chip and i will update u
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