Switched 2 cell LiFe balance charge socket

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Rob Thomson
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Switched 2 cell LiFe balance charge socket

Post by Rob Thomson » Sun Sep 13, 2015 6:57 am

For some time I have successfully used switched 3.5mm audio jacks as a useful socket for providing both power to the receiver, and charging of the battery.

The idea simply being that when the male jack is plugged in, the receiver is unpowered and the charge circuit enabled - when the jack is removed the receiver gets powered.

Very useful for small gliders with limited access!

With the advent of LiFe batteries I am looking into doing a similar thing.

Using a 3 pin stereo socket it should be possible to balance charge, etc.. in the same fashion.

My concern at present is the possibility of shorts when plugging the barrel connection in.

I am wondering if anyone has any thoughts on how to mitigate the risk of this?

Maybe some magic combination of components - resister / diode that would help?

Rob
Slope Soaring, FPV, and pretty much anything 'high tech'
...........if you think it should be in the wiki.. ask me for wiki access, then go add it!

User avatar
Rob Thomson
Site Admin
Posts: 4537
Joined: Tue Dec 27, 2011 11:34 am
Country: United Kingdom
Location: Albury, Guildford
Contact:

Re: Switched 2 cell LiFe balance charge socket

Post by Rob Thomson » Mon Sep 14, 2015 2:05 pm

So... I wired up this version...

And it works!
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20150914_140826.jpg
Slope Soaring, FPV, and pretty much anything 'high tech'
...........if you think it should be in the wiki.. ask me for wiki access, then go add it!

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