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Li-Ion powered cmoy amplifier

post #1 of 6
5/11/09 at 7:57am
Thread Starter 
Has this been done before, and if so, was it successful. I am thinking of using 2 to avoid the problems with the virtual ground circuit (and building up a charging circuit, most likely using one of the TI solutions). Just as I thinking of using an amplifier, but will need it to be very portable to be worthwhile, and would prefer to be continuously replacing batteries. And yes, I all the charging management IC's are in SMD format, this is not going to b e a problem, as I have suitable SMD soldering experience.
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post #2 of 6
5/11/09 at 8:10am
Most stay away from Li-Ion due to the complexity of charging, not having it catch on fire, etc. I don't see why you couldn't do it though if you have enough experience with Li-Ion to ensure you don't have issues.
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post #3 of 6
5/11/09 at 8:15am
Joe's Luxury NEW cMOY Headphone Amplifier Headphone Amp on eBay, also, Other, Portable Audio Video, Electronics (end time 16-May-09 17:59:04 BST)
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post #4 of 6
5/11/09 at 8:19am
Thread Starter 
Quote:
Originally Posted by cobaltmute View Post
Most stay away from Li-Ion due to the complexity of charging, not having it catch on fire, etc. I don't see why you couldn't do it though if you have enough experience with Li-Ion to ensure you don't have issues.
My experience in Li-Ion is still relatively limited, but with enough reading on the matter (and a bit of guidance from a lecturer who is supervising one of my projects this year), it shouldn't be beyond my ability. Are there others using internal rechargeable and chargers. If so, are they just going the Ni-Cad or NiMH route.

EDIT
Just saw the other post. I think I will end up ordering 2 Li-Ion cells, and the charger IC, and test it out.
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post #5 of 6
5/11/09 at 8:33am
http://www.head-fi.org/forums/f6/tri...argers-185377/

What he has in that link you provided is 7.4v @ 230mAH. Not much better that a standard 9v (which would be about 7.4v @ 250mAh depending upon internal cell configuration)

Most use NiMH as they are easy to charge with a constant current source.
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post #6 of 6
5/12/09 at 1:08am
Thread Starter 
Quote:
Originally Posted by cobaltmute View Post
http://www.head-fi.org/forums/f6/tri...argers-185377/

What he has in that link you provided is 7.4v @ 230mAH. Not much better that a standard 9v (which would be about 7.4v @ 250mAh depending upon internal cell configuration)

Most use NiMH as they are easy to charge with a constant current source.
I might have to do some more looking into this before I make a final decision then, a single 9v with a trickle charger might be the way to do it (definetly safer, cheaper, and easier to get the parts (in NZ).
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