FYI,there are DC power supplies available for direct replacement in PC's for
12,24 or 48 volt battery systems.
----- Original Message -----
From: Fred Seamans <[EMAIL PROTECTED]>
To: <Repeater-Builder@yahoogroups.com>
Sent: Thursday, November 18, 2004 8:07 AM
Subject: Re: [Repeater-Builder] Repeater Backup Power
>
> Justin: First, Your Vertex rep. is full of it! Look at the power
consumption
> on the Vertex repeater between AC and DC, especially the Stby/Rec mode.
Now
> to your question; You have a lot of unanswered questions that need to be
> decided before any design can be considered. As a retired engineer I can
> list a few for you.
> 1. What is the expected duty cycles of each piece of equipment when the
> power fails?
> 2. How long do you want emergency power to be operational? 1, 2, 6, 12, 24
> hours or days?
> 3. Is there a physical space limitation on the installation?
> 4. What type of maintenance is available?
> 5. Are there any accessibility problems?
> 6. What are the budget constraints? Are they firm or adjustable?
> 7. What do you mean by overboard?
> 8. What level of reliability/redundancy do you want in the emergency
system?
> These are just the beginning of a long list of questions that should be
> answered before any design is considered. Depending on your answers, there
> are alternatives that may be considered that will effect price, space
> requirements and reliability.
> I can see one difficulty now; the computer requires AC stby power while
the
> other equipment could use either.
> I would hope that you are not one of the managers that wants the caddy for
a
> chevy price.
> Since you are not sure about what you need, I would urge you to hire a
good
> technician or engineer to design a system that meets your requirements.
> Fred
> W5VAY
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