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Class D Switching Power Amplifiers and Power D/A conversion

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Old 28th June 2009, 10:19 PM   #131
gychang is offline gychang  United States
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Default Re: pic3

Quote:
Originally posted by mravlcax
inside...


Regards Aleš

what is the cover?, acrylic?, details will be appreciated.

gychang
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Old 3rd July 2009, 05:14 PM   #132
mravlca is offline mravlca  Slovenia
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Hi!

Whole casing is made from plexi glass. It is just glued together with superglue.

p.s. Sorry for so long reply but I had some problems with my previous account.

Regards Aleš
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Old 12th July 2009, 02:58 PM   #133
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This one is 3122D2 on breadboard. Tested it with 15V adapter supply and 8oham stereo speakers. Very good voice output. Hope to convert to PCB soon.
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Old 23rd July 2009, 05:16 PM   #134
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My 300W Class-D Amp, but incomplete

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Old 23rd July 2009, 07:45 PM   #135
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Nice!
Which power modules are these?
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Old 27th July 2009, 05:10 AM   #136
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wiring completed





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===========================
Nice!
Which power modules are these?
-----------------------------------------------

This Class-D module with power supply.
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Old 27th July 2009, 01:07 PM   #137
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Quote:
Originally posted by laipanda
...
This Class-D module with power supply.
I know that much...

Did you use modules designed/made by somebody else or did you design these?

Is there any additional information you can provide?

Thanks!
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Old 5th August 2009, 11:42 AM   #138
Ian444 is offline Ian444  Australia
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TA2020 from arjenhelder_electronic on ebay, it is his MkII PCB, but the input caps have been shorted out and the input ground is connected to the bias cap pin 14, i.e. it has been modified for a DC-coupled input. The mods are under the board so the PCB looks standard in the pics.

http://i198.photobucket.com/albums/a...1260/Tamp0.jpg
http://i198.photobucket.com/albums/a...1260/Tamp1.jpg
http://i198.photobucket.com/albums/a...1260/Tamp2.jpg
http://i198.photobucket.com/albums/a...1260/Tamp3.jpg
http://i198.photobucket.com/albums/a...1260/Tamp4.jpg
http://i198.photobucket.com/albums/a...1260/Tamp5.jpg
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Old 12th August 2009, 09:40 PM   #139
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Cool Sure 2*100

Sure tk2050 2*100
psu 24V 6A
inside of empty box of bullets
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Old 22nd August 2009, 12:22 PM   #140
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my tda8920B amplifier
3XTDA8920B + transformer + preamp + smps (transformer + 120,000uF )
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