Which wire on the 30-pin plug is responsible for charging an Ipod?

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Which wire on the 30-pin plug is responsible for charging an Ipod?

Which wire on the 30-pin plug is responsible for charging an Ipod? I want to cut this wire so that I can use my Ipod in my car or on my computer without having to charge it. I understand that Ipod's are meant to withstand short charges, but I still want to figure out how to do this. There has to be one wire (or more) that is specifically responsible for only charging the ipod. Does anyone know which one? See wiring diagram below:

Pin - Signal

1 - GND

2 - GND

3 - Right

4 - Left

5 - Right In

6 - Left In

7 - ?

8 - Video Out

9 - S-Video Chrominance output

10 - S-Video Luminance output

11 - AUDIO_SW

12 - Tx

13 - Rx

14 - RSVD

15 - GND

16 - GND

17 - RSVD

18 - 3.3V

19,20 - +12V

21 - Accessory Indicator/Serial enable

22 - TPA -

23 - 5 VDC +

24 - TPA +

25 - Data -

26 - TPB -

27 - Data +

28 - TPB +

29,30 - GND

Posted on Jul 18, 2012 4:52 PM

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Answer 1

lllaass

Level 10

210,513 points

Jul 18, 2012 4:57 PM in response to PStimola

#23, + 5VDC

I would test before yuu cut since other functions may also not work.with that not connected.

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Answer 2

PStimola Author

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Jul 18, 2012 7:00 PM in response to lllaass

Thanks for getting back to me. Do you have any idea which functions may not work? What exactly does #23 do? The more informaiton I have, the better. Thanks!

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Answer 3

bobjbkln

Level 6

10,005 points

Jul 18, 2012 8:55 PM in response to PStimola

I think you are trying to fix a problem that does not exist. There is nothing wrong with continuously charging your iPod. The circuitry will shout down the charging function when it is fully charged. I keep my iPod tethered to my computer most of the time. It works as well now as it did when I bought it 20 months ago.

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Answer 4

PStimola Author

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Jul 19, 2012 5:33 PM in response to bobjbkln

I understand this. I just want to try it. As I said before, "I understand that Ipod's are meant to withstand short charges, but I still want to figure out how to do this."

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Answer 5

PStimola Author

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Jul 19, 2012 5:52 PM in response to PStimola

I just cut wire #23. It does not charge it now but the ipod is not recognized either. Would adding a false drain on the 5 volts help? I don't know what else to do. Let me know.

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Answer 6

Philly_Phan

Level 7

20,737 points

Jul 19, 2012 7:52 PM in response to PStimola

PStimola wrote:

I just cut wire #23. It does not charge it now but the ipod is not recognized either. Would adding a false drain on the 5 volts help? I don't know what else to do. Let me know.

Yes. Reconnect the wire and use the iPod the way that it was designed to be used.

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Answer 7

PStimola Author

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Jul 22, 2012 6:31 PM in response to Philly_Phan

Thanks for all your help...

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