The capacitors don't replace batteries, but they can save a lot in power supply
and cable
size. I used to have a ss amp which required around 90A at 12v, and I used a
pair of 75
amp Astrons and some huge 00 gauge welding cables to keep the drop down
(connecting them
to the amp was interesting).
However, by putting a very large capacitor AT THE AMPLIFIER, you can use
smaller wires and
a smaller power supply. The capacitor charges during periods of low current
draw and then
supplies power when needed. These are popular here with the morons that have
insanely
powerful audio amplifiers in their trucks.
On 8/9/2010 2:59 AM, Mike Tubby wrote:
> I agree. With decent AGM batteries I can't really see the need for
> capacitors.
>
> I have worked with AGM SLA betteries for many years in Ambulance
> electrical systems. I also use them to power various repeaters and have
> a split charge system in my SUV for powering ham radio equipment.
>
> The trick to getting good performance and good outcomes is all to do
> with how you treat your batteries (charge/discharge).
>
> Most SLA AGM batteries can be used with stepped charging with the harder
> charging at 14.4V and float/maintained charging at 13.8V. Most SLA
> batteries shouldn't be discharged below 10.8V as this may permanently
> damage the chemistry - consider a low voltage disconnector.
>
> There's some good information over at Battery university:
>
> http://www.batteryuniversity.com/>
>
> Regards
>
> Mike G8TIC
>
>>>
>>> Has anyone ever built a power supply system with a capacitor??
>>> what suggestions for doing it right?
>>> any url for a source on such an installation?
>>> Anything else need to be added like a low voltage cutoff, isolator, etc?
>>>
>>> thanks in advance
>>>
>>> chas k5dam
--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|