simple 9V cell charging circuit?
Jan 23, 2005 at 9:16 AM Thread Starter Post #1 of 8

aeriyn

Headphoneus Supremus
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For the hell of it I think I want to put a charging circuit on my CMoy so I don't have to dig the plainview out every time it needs charging.

I vaguely recall how it works, something about placing fairly large resistors on the battery, but... someone please refresh my memory.
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Jan 23, 2005 at 4:39 PM Post #3 of 8
Someone on here posted one a few years ago I think, based on the MC333xx chip from Maxim. I built one, and it worked great. Lemme dig around and see if I can find the post on here......
 
Jan 23, 2005 at 4:49 PM Post #5 of 8
Here is the thread..........

http://www6.head-fi.org/forums/showt...1&page=1&pp=20

This works very well, as you don't run any danger of over-charging the battery. When it's done in fast mode, it kicks over to trickle mode, no worries! The circuit doesn't take up much space either, I built it on a piece of 1x1 perfboard.
 
Jan 23, 2005 at 10:51 PM Post #7 of 8
beamrider you wouldn't happen to still have that pdf file, would you? If so, I would be interested in seeing it, could you up it somewhere or e-mail it to me, your help would be much appreciated.

Thanks in advance
 
Jan 24, 2005 at 1:12 AM Post #8 of 8
I've since changed ISP's, so I don't have the file anymore, but I think I printed it out, I'll see if I can find it and scan it.

EDIT: I can't find that PDF anywhere, but here is the schematic from the previous thread. If you've got crappy eyes like me, you may want to blow it up.....
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http://www6.head-fi.org/forums/attac...achmentid=1576
 

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