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From: Steve Rodgers [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, September 26, 2004 11:20 PM
Subject: Re: [Repeater-Builder] BIG battery Astron current limit
The question should be how long before the Astron RS-35M burns up running
at
34A? The power supply is rated
[EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, September 27, 2004 2:18 PM
Subject: Re: [Repeater-Builder] BIG battery Astron current limit
The size of supply you will need are dependent on
several factors, such as peak current draw, average
current draw, size of battery
How long would the RS-35M run in current limit at
34 Amps? (This is about 97%.)
I have noticed that the internal ammeter sometimes
lacks good calibration. As measured on a quality manufactured shunt, 34
Ampspegs out the panel ammeter on the RS-35M, which indicates 40 Amps
Max.
Anyone
The question should be how long before the Astron RS-35M burns up running at
34A? The power supply is rated for 25A continuous duty, 35A intermittent
duty. I don't like running mine north of 15A continuous without a fan.
This is the weakness with the Astron supplies. If you load them up to
One thinkng I forgot to mention: Batteries should be charged from a current
source. What this means is the maximum charge current should be limited to
protect the power supply. I would call Astron and ask them how to modify the
RM35M so it starts folding back at 15A instead of its default of
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From: Steve Rodgers [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, September 26, 2004 10:39 PM
Subject: Re: [Repeater-Builder] BIG battery Astron current limit
One thinkng I forgot to mention: Batteries should be charged from a
current
source. What this means
: Re: [Repeater-Builder] BIG battery Astron current limit
One thinkng I forgot to mention: Batteries should be charged from a
current
source. What this means is the maximum charge current should be limited
to protect the power supply. I would call Astron and ask them how to
modify
to go search the
web...)
Steve
AA5SG
- Original Message -
From: Steve Rodgers [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, September 26, 2004 10:39 PM
Subject: Re: [Repeater-Builder] BIG battery Astron
current limit
One thinkng I forgot to mention
I missed the original post - was the power supply not only charging the
batteries but also powering the load (repeater)? If so, then when the
Astron goes into into voltage foldback (constant-current mode), the load
is going to get something less than 13.8V.
The foldback on all of the non-V
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