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Old 26th March 2012, 08:31 PM   #101
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Old 26th March 2012, 08:55 PM   #102
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Default Important

Bob,

remember to install J1 jumper on the bottom side (see attachment).
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Old 26th March 2012, 09:06 PM   #103
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Will do, but please tell us again what it does and what happens without it. I know all of this stuff was covered on the development thread but sometimes it's difficult to track down. Thanks for your patience.
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Old 26th March 2012, 09:31 PM   #104
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It carries V- to the regulator.

It is necessary becasue, otherwise, negative regulator would output 0V...

It must be soldered before big smoothing caps since it's soldered on the upper side of the PCB.
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Old 26th March 2012, 09:48 PM   #105
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Done.

JP In.jpg

Thanks, Moving on.
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Old 26th March 2012, 10:03 PM   #106
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Old 26th March 2012, 11:23 PM   #107
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Low profile caps mounted.

Hit a snag. My Mouser order didn't include 100uf caps for C102 / 202. Since this is a vanilla (base) build, can I use a generic (Radio Shack) substitute?
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Old 26th March 2012, 11:36 PM   #108
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Use any good sounding cap sold by Mouser like Nichicon FW or KZ or Panny FM. 47uF 25V is good

Inviato dal mio LG-P500 usando Tapatalk
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Old 27th March 2012, 10:41 AM   #109
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Dario, could you explain the flexibility in the range of values at C102 /202?

100uf/50V to 47uf/25V seems quite a spread.


"Inviato dal mio LG-P500 usando Tapatalk "
???

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Old 27th March 2012, 10:52 AM   #110
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Quote:
Originally Posted by bcmbob View Post
Dario, could you explain the flexibility in the range of values at C102 /202?

100uf/50V to 47uf/25V seems quite a spread.
The only important parameter is the voltage rating (25V and up), any capacitance between 47uF and 100uF will do.

Their only function is to ensure regulator stability but so far it seems to work perfectly also without them.

The RevC counterparts had the function to reduce ripple and impedance, this is not the FE case.
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Glad to hear of your new phone. Google Translate relieved my fear that you were swearing at me
My smartphone is over a year old... simply this time I've answered from bed (it was 1:30AM and I was trying to fall asleep...)
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