What I have is a homebrew 35 amp power supply that feeds (currently) 2 hf
rigs and one uhf/vhf rig.
I have installed a deep cycle lead acid battery that feeds the rigs
directly, and have a blocking diode mounted on a heat sink between the b+
lead out of the power supply to the battery. The diode is a stud mount 50
amp garnered out of the junk box.
Since there is a small amt of voltage drop across the blocking diode, I have
kicked up the power supply to just a tad over 14 vdc at the power supply
output to insure about 13.8 vdc across the battery's terminals.
This is pretty common on repeater power supplies.
----- Original Message -----
From: "Bill Tippett" <btippett@alum.mit.edu>
To: <tentec@contesting.com>
Sent: Wednesday, May 21, 2003 7:02 AM
Subject: [TenTec] DC Power Supply Backup
> I've ordered an Orion and for the first time will be
> using an outboard DC supply (a used Astron RS-35M
> is on the way). I often get short power glitches since I am
> in a rural location and am concerned about getting resets
> on Orion since I understand it takes awhile to reboot (how
> long?) I'm thinking of getting a small battery (motorcycle)
> to place between the RS-35M and Orion. This would stay
> fully charged and might help prevent unwanted resets by
> brief power glitches.
>
> Has anyone ever done anything like this? Is it even
> necessary or is there enough residual energy in the PS
> filter caps that brief interruptions (typically <10 sec) are not
> a problem? I don't really want to buy a UPS large enough
> to power Orion but is there a simpler solution?
>
> 73, Bill W4ZV
>
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