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well, as an update, almost all the work is done for the battery supply for my NAD cd player. i have finished all but the relay network and the wiring needed to switch the setup from a 12v over to a 36v.
here are the details:
there are 3 12v 5AH sealed lead acid batteries hooked up in parallel when charging. the charger is actually a velleman kit (the intelligent lead acid charger). it works very well, and is very efficient. its powered by a 40VA xformer. however, when the player is kicked on, the charger disengages, and the batteries are then kicked over to be hooked up in series, thus providing 36v.
it will be kinda slick once im finally done with it. just need to get the relays and wire them to the batteries, everything else is done and tested. the things took a whole 18 hours to charge from start to finish. 15AH total between them. should be MORE than enough for the cd player. (i use my equipment a lot...)
ill post pics once i get the relays setup (hopefully tomorrow).
as per the advice of kiwi_abroad, i am going to add master kill switches to the back of the box. when those are off, the batteries will be completely disconnected from the system, just in case you ever needed to unplug it for awhile.
oh, and im still curious what value of caps i need to lower the impedance at higher frequencies. im not an EE, and quite frankly i SUCK at electronics, so i really dont know what i need to do here. help maybe?
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