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post #11 of 47
9/14/10 at 5:54pm
Needs moar caps!!
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post #12 of 47
9/14/10 at 8:14pm
Your resistor and cap look fine to me

What's the resistor resistance?
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post #13 of 47
9/17/10 at 12:26pm
Thread Starter 
Updates as the mosfets came in. However, very hard to get them looking nice, but if it works...it works. Now let's just hope it works!

Still waiting on inductors. I'm not sure if my 15w iron is up to the task for those inductors or not. That reminds me, where did I put my dremel????

but anyways ram sinks and mosfets installed for the most part. I did slightly hit a 16v cap with my iron while boogering with them so I may just pull them both and slap on some 1000uF bad boys on it.

Also I did leave some DMM leads in so you could see how it works =o)~



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post #14 of 47
9/17/10 at 12:40pm
Mosfet question, I've been looking over all my dead hardware & it seems no 2 mosfets have the same info on them.
Also the lower one on the stock 220 seems to have no info on it, did you use random mosfets or do you know how to read these things?
Common core electronics was too long ago for me...
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post #15 of 47
9/17/10 at 12:53pm
Thread Starter 
Quote:
Originally Posted by FtW 420 View Post
Mosfet question, I've been looking over all my dead hardware & it seems no 2 mosfets have the same info on them.
Also the lower one on the stock 220 seems to have no info on it, did you use random mosfets or do you know how to read these things?
Common core electronics was too long ago for me...
Nah they are specific. If you look on the mosfets you can see a code. Just got them from digikey.
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post #16 of 47
9/17/10 at 12:59pm
Step away from the dremel
One gear, GO!
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post #17 of 47
9/17/10 at 8:05pm
Quote:
Originally Posted by FtW 420 View Post
Mosfet question, I've been looking over all my dead hardware & it seems no 2 mosfets have the same info on them.
Also the lower one on the stock 220 seems to have no info on it, did you use random mosfets or do you know how to read these things?
Common core electronics was too long ago for me...
Mine has data on all of them. One does look different, but it has the same code on it.

Got my Mosfets today!


EDIT: Looking at this PCB again. There is a bit more missing then just mosfets and choke....I'm getting skeptical this might not work.
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post #18 of 47
9/18/10 at 11:20am
Which one is the vGPU control IC, can it handle dual phase operations?
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post #19 of 47
9/18/10 at 12:19pm
APW7067

Quote:
The synchronous PWM
controller drives dual N-channel MOSFETs, which provides
one controlled power output


Yea, I was looking again and there are two more places to mount APW7067's.

This isn't going to work for me. Spec, on the other hand, has a dead part he could pull a APW7067 from..... Looks like it's up to you Spec for the dual phase action.
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post #20 of 47
9/18/10 at 12:32pm
The APW7067 is 14-legged. I can just find 2 empty places for 8-legged IC's.

If you look at the back next to the APW7067 theres place for a more complex IC which can probably handle 2-phase(+) operations. The empty IC pads on the front might just be there for the corresponding MOSFET drivers if using such a 24pin IC.
Edited by mAlkAv!An - 9/18/10 at 2:01pm
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