[Mobile-Portable] Big Farad versus Hybrid Caps?

[N1KHB at aol.com]

Hi Doc,
   It would be wise and prudent to check the amplifier specs for  operating 
voltage range. With that level of current draw, the battery  voltage may 
well sag under load to less than what the amp wants in order to  operate 
properly and an extra outboard capacitor probably won't help  enough.
   Another (better IMHO) approach would be to use a battery  voltage boost 
device. I assume that some are made in that current range.
   Are you trying to avoid using a power supply because of cost,  or are 
you just trying to be independent of AC mains?
 
Joe N1KHB
 
 
 
 
In a message dated 6/18/2009 7:36:40 P.M. Eastern Daylight Time,  
doc at kd4e.com writes:

Ignoring  the hype and the prices - can someone address the 
difference
in  technology between a big Farad cap and a  Hybrid?

http://www.hifisoundconnection.com/Shop/Control/fp/tcat/28044/SFV/30046

Something  like this "Power Acoustik CAPCELL-300" (300A x 2 
seconds)
placed  in-line with the vehicle DC supply, or at home 
in-line with a  big
deep-cycle battery or a AC-DC power supply, sounds like a  
cost-effective
and compact way to make sure a solid state amp has all  the 
current it needs
when it needs it.

At home my plan is a US  Battery 12V XC Sweeper-Scrubber 
deep-cycle
(Amp Hours @ 20hr. rate  155min./75A for 77A continuous) with 
a 20A
float charger.  If I  add a big Farad or Hybrid it seems that 
I should be fine
for normal SSB  operation of a 700W output solid state amp. 
that usually
wants about  60A @ 13.8VDC.

WDYT?

-- 

Thanks! & 73, doc,  KD4E
FS/Swap/Wanted: http://kd4e.com/swapn.html
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