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Class D Switching Power Amplifiers and Power D/A conversion

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Old 6th August 2010, 11:35 PM   #301
stewin is offline stewin  Kenya
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hi tekko do you know of a program that can calculate e cores like the mini ring core calc steve
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Old 6th August 2010, 11:42 PM   #302
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No, i don't.
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Old 7th August 2010, 09:45 AM   #303
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hi guys is this ok? Click the image to open in full size.
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Old 7th August 2010, 04:27 PM   #304
Pano is offline Pano  United States
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link to image not working.
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Old 7th August 2010, 07:21 PM   #305
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Quote:
Originally Posted by ionutzxpo View Post
hi guys is this ok?Click the image to open in full size.
sorry but if i clic on it it works

Last edited by ionutzxpo; 7th August 2010 at 07:25 PM. Reason: adding some txt
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Old 7th August 2010, 08:11 PM   #306
luka is offline luka  Slovenia
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Old 8th August 2010, 09:51 AM   #307
lycanlk is offline lycanlk  Sri Lanka
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hi friends,

I have spend whole my last weak with this amp and winding inductors.. finally I could able to remove all switching noise.. sound is so perfect now..very low heat (only got the noise coming out from my PC ) and I learnt a lot of things about inductors. there are many things to concern when winding an inductor. not an easy task and to explain just by a post.. I ended up with winding my core on a ferrite stick taken by an E core.. (The 'I' part of an E-core) It was the best result .. may be I couldn't find a required toroid in my country sadly. I will send you more pictures later.. I should sleep a day now at least because I haven't sleep well for a week i guess

regards,
Lycanlk
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Old 8th August 2010, 10:05 AM   #308
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I ordered free samples from coilcraft for their class d audio toroids. They shipped out on thursday so i should have them in around a week and a half.
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Old 8th August 2010, 12:11 PM   #309
lycanlk is offline lycanlk  Sri Lanka
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Quote:
Originally Posted by luka View Post
Click the image to open in full size.
Speaker out and ground is swapped !

The right order is

+ve / GND / SPK-GND / SPK-OUT / -ve
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Old 8th August 2010, 12:17 PM   #310
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thanks lycanlk
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