[aprssig] backup pwr systems

[Chris Rose]

Leaving a battery constantly plugged in to a charger will cook and kill the battery.  I have ruined more than one.  I don't suggest that course of action.  Having a battery available to connect to when mains go down is a better way to go.  Some circuits are available to show how to do this.  Some simple and some quite elaborate depending on how many raidos or scanners you have to take care of.

Chris 
KB8UIH


----- Original Message ----
From: Ben Lindner <vk5jfk at activ8.net.au>
To: TAPR APRS Mailing List <aprssig at lists.tapr.org>
Sent: Sunday, December 3, 2006 5:45:53 PM
Subject: [aprssig] backup pwr systems


Hi all,

What sort of backup power systems do people use these days.  ?

eg.

Running a rig from a standard PSU while charging a battery at the same 
time and when the mains power drops out the battery will take over and 
run the radio. Then when the mains power is returned every thing is back 
to normal, battery is charged again from PSU and radio runs from PSU.

Any body have any ideas on how to work this or has a circuit that I can 
build

Ben Lindner
VK5JFK

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