Look on the Kevin's Web site under Astron power supplies for info on
how to use an Astron to float batteries. There needs to be a diode
between the power supply and the batteries to prevent the batteries
from discharging back into the power supply when the AC is gone. You
can alos use a BIG relay that drops the PSU when the AC goes off. I
actually do that with my Astron. When the AC picks up I force the
repeater into low power (if it keys up) for a timed period to let the
batteries charge up to near float voltage. The PSU needs current
limit or it will blow out when the power comes on. So check repeater-
builder for the astron modification dope. Or you can gin up something
crude with relays like I did.
73 Ed K3SWJ
--- In Repeater-Builder@yahoogroups.com, "w9mwq" <[EMAIL PROTECTED]> wrote:
>
> Last night my power supply took a dump! Good thing for backups.
> Anyways, what I am wanting to do is put 3 marine batteries together
> to run the power for the repeater with a charger to charge the
> batteries. If I use a 12 Volt Car charger, do I risk the chance of
> noise, or would the batteries filter that. What would be a good
> source to charge these batteries? The power supply that will be
> taking the place of the worthless Pyramid supply will be an Astron
> 52 Amp Rack Mount Supply. I have heard in the past that batteries
> have been charged with these power supplies, but not sure if this
if
> true or not. Any ideas? Thanks.
>
> Mathew
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