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 Hard-modding Gallery, Show us your L33T soldering skillz here

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overclockalbert
post Aug 28 2007, 10:17 PM

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1,058 posts

Joined: Apr 2006
From: Penang , Malaysia


QUOTE(zahri @ Oct 9 2006, 12:25 AM)
Bro, Shah.

Sorry for disturbing ur thread.

Got Some Question on TDA2004 IC.

REcently i was planning to do a portable amp based on the OPamps.

but couldnt find any OPamps and just got myself some TDA2004 kits.

just for the sake of soldering. biggrin.gif

everytime i plug in my speaker / headphones. it hums. any ideas what is causing the hums ?
Here are the pics.

user posted image

user posted image

user posted image
*
bro try to add some damper circuit(filter) on your supply line.
a ferrit core and some filtering tools for the supply and source line
will help alot.
anyway, TDA2004 with 15WX2 RMS right?
a good VR for the main valume control will be an added advantage for great crystal clear output.

* i had my STK dual channel amps collecting dust. it was my final year project on Polytech sin year2000.
haha biggrin.gif

 

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