[aprssig] backup pwr systems

[tg]

Something like this. Have been using one for about two years without any 
problems.
http://www.iotaengineering.com/dlm15.htm

Todd wd6dfh

----- Original Message ----- 
From: "Joe Della Barba" <joe at dellabarba.com>
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Sent: Saturday, December 09, 2006 7:58 AM
Subject: Re: [aprssig] backup pwr systems


> You need a battery charger designed for this service. Most any marine 
> hard-wired battery charger is designed to run all the time. Look for a "3 
> step" or "smart charger".
> 73
> Joe N3HGB
>
> Chris Rose wrote:
>> 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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>>
>>
>
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