[VoIP] Power backup questions

[Dennis D Hock]

Jayson,

I think what you want is basically a "double conversion" UPS.  Seems like
you copuldmake one with a battery and a small 10W or so inverter and a
small good quality charger to keep the battery floating.  Put it all in a
box along with some filtering and I think you'd have it.

Dennis Hock

-----voip-bounces at ckts.info wrote: -----


To: "Voice Over IP Tandem for Analog Switches" <voip at ckts.info>
From: "Jayson Smith" <ratguy at bellsouth.net>
Sent by: voip-bounces at ckts.info
Date: 10/31/2006 10:59AM
Subject: [VoIP] Power backup questions

Hi guys,
This is mostly off-topic, but this morning we had an approx. two-hour power
outage.  Yeah Doug, I know that's nothing next to what you just went
through!  Anyway, while the inexpensive UPS's kept all our computers going,
the router and DSL modem had problems.  I guess either the DSL modem or the
router just can't handle much in the way of power glitches.  They were both
on a UPS, but when the power died so did our DSL connection.  This has
happened before when we would have tiny power glitches during storms and
the
UPS would kick in.  I'm considering the purchase of a more expensive UPS
for
my computers, probably one of the full ones that runs on battery even when
the power's on so there's no switchover time when the power actually does
die.  However, I don't really want to spend several hundred dollars for
another such UPS just for our router and DSL modem.  That seems a bit
overkill to me.  Both these devices use the typical wall wart type power
transformers, so they can't be using much power.  I'm just wondering if
there's any type of inverter/something out there that could help eliminate
the switchover effects?  E.G. a very tiny full, always on battery, UPS that
would only actually run these things for, say, ten seconds would do the
trick, since the switchover happens well within one second of the power
going out and the regular UPS would then be powering it again.  Any
thoughts?
Thanks,
Jayson.


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