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Class D Switching Power Amplifiers and Power D/A conversion

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Old 22nd June 2013, 10:34 AM   #3551
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A video: UcD Class D Amplifier - YouTube
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Old 22nd June 2013, 12:40 PM   #3552
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Hi Tekko can you post the pdf pcb for this amp?

Thanks!
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Old 22nd June 2013, 12:55 PM   #3553
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You can derive the layout quite easily from the pic of the board and from the schematic:

I also challange you to produce a layout with this exact circuit with no changes that regardless of what speaker is connected only has a barely audible hiss.

With my selection of speakers this amp can go from a barely audible hiss on some speakers to a clearly audible hiss with some crackle on other speakers, particularly on single driver fullrange speakers.
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Old 22nd June 2013, 01:04 PM   #3554
rezamir is offline rezamir  Iran
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Quote:
Originally Posted by Tekko View Post
You can derive the layout quite easily from the pic of the board and from the schematic:

I also challange you to produce a layout with this exact circuit with no changes that regardless of what speaker is connected only has a barely audible hiss.

With my selection of speakers this amp can go from a barely audible hiss on some speakers to a clearly audible hiss with some crackle on other speakers, particularly on single driver fullrange speakers.
hi tekko
what is the maximum range of applied rail to rail voltage for this amp?
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Old 22nd June 2013, 01:20 PM   #3555
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With the intended mosfet (IRFB4615) max 2x60V and minimum 4 ohm load, the vreg resistors for the MAX913/TL1016 are sized accordingly.
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Old 22nd June 2013, 05:14 PM   #3556
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I putted together a second module:
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Old 23rd June 2013, 10:09 AM   #3557
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A lil vid: DIY Class D with a tuner - YouTube
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Old 23rd June 2013, 12:22 PM   #3558
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those filters helps a lot in removing EMI radiations I can see that you put them on the power lines,signal lines and output line great job!
sounds great
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Old 23rd June 2013, 12:36 PM   #3559
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Quote:
Originally Posted by Tekko View Post
I putted together a second module:
hello sir can u share ur project ...
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Old 23rd June 2013, 12:44 PM   #3560
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To be honest, i dont think those ferrite blocks are actually doing anything.
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