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Old 4th October 2002, 06:34 PM   #1
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Default diy class D resources

can someone point me in the right direction? So far all I can find are switching power supplies, but no class D output projects.
Boards, schematics, kits, plans, anything would be appreciated.
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Old 4th October 2002, 06:40 PM   #2
sonnya is offline sonnya  Denmark
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look at this :

http://www.zetex.com/3.0/design-guide.asp

http://www.zetex.com/audio/

It is a fairly simple design, for power level up to 100W into 4Ohm (ZXCD1000MOEVAL).

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Old 4th October 2002, 06:49 PM   #3
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ZapPulse from LC Audio, perhaps?

www.lcaudio.dk
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Old 4th October 2002, 07:27 PM   #4
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National Semiconductor do a driver and an output chip, I haven't looked closely, but they are usually good for data sheets and ap. notes, as well as having a good sample policy

Yup, try this-
http://www.national.com/pf/LM/LM4651.html
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Old 4th October 2002, 09:29 PM   #5
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zap pulse link does not work ??

I didnt realize there was a class D overture solution !
This is pretty exciting, but there seems to be a bit of a noise issue at high power. It looks lke 100w@4 ohm is .3%distortion which seems like ausable max? this is under 200 hz signals only tho, so it should not matter as much?

can this chip be bridged like the other overture chips?
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Old 4th October 2002, 09:50 PM   #6
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Check out the TI components on this page:

http://focus.ti.com/docs/browse/prod...s&templateId=1

Particularily the TAS5100A and accociated parts.
I don't think it is exactly what you are looking for, but it is somewhat related and you might find the application notes of interest. Enjoy!
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Old 4th October 2002, 10:06 PM   #7
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I havent built this one but It got a decent review in High Fidelity.

http://listen.to/audioexperiment
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Old 18th November 2002, 10:12 PM   #8
chr is offline chr
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Default Re: diy class D resources

Quote:
Originally posted by Jared
can someone point me in the right direction? So far all I can find are switching power supplies, but no class D output projects.
Boards, schematics, kits, plans, anything would be appreciated.
I suggest you take a look at Intersil (before Harris) 4080-series of bridge drivers. Harris used to have a fairly complete application note on the web.

Christer
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Old 19th November 2002, 04:57 AM   #9
dimitri is offline dimitri  United States
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Default links and info

please visit http://www.classd.org/ for addirional links and info
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Old 19th November 2002, 10:21 AM   #10
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http://www.puredigitalaudio.org/digi...rs/index.shtml
http://www.tripath.com/

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