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Chip Amps Amplifiers based on integrated circuits

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Old 17th March 2011, 11:17 AM   #11
haelius is offline haelius  Portugal
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Join Date: Mar 2011
ok im gonna reverse a bit... and gonna use the creative board without getting the chips off.... it has the 7372 and 8510j tied, so my only problem is gonna power it cause the transformer is 12V AC 3.9A (lost it), but theoretically, its just needed to chant after the rectifier bridge right, after the big capacitator 4700uF 25v?


i am gonna post the back of the PCB so u guys please help if u can

i need to power it using the PC power supply, and THE MOST IMPORTANT, i need to bypass the power volume, cause it powers on the board, and i dont have it..... can anyone help a bit?
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Old 18th March 2011, 11:40 PM   #12
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Join Date: Feb 2011
"ok im gonna reverse a bit" -> do not.
and take a good look arund, i bet if you do you find a more suitable psu than the pc psu.

Wallplug adapters, old radio / other junk you or someone who you know does not need, and so on. You can salvage the parts needed, if You are realy upto do some low cost DIY.

Who knows, You might even find good quality stuff.
(like.. I managed to salvage nice TL74 IC thisway.. And other usefull things such as 6300 uf caps, and many handfull of ceramic caps, safety fuse, switch, acceptible pots, a few 78xx regulators complete with circuitry and so on..)

At any case, doing it DIY is the fun way.
And in Your position i would say it will be a lot more easy than to "whack" your way to power that amplifier.
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Old 19th March 2011, 10:55 PM   #13
AndrewT is online now AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
Hi Pmb,
thank goodness you are awake.

They know the formulae and they can't apply them !
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regards Andrew T.
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