Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!cornell!rochester!udel!mmdf
From: mcohen@nrtc.northrop.com (Marty Cohen)
Newsgroups: comp.sys.amiga
Subject: ups/sps - which & what kind
Message-ID: <4799@louie.udel.EDU>
Date: 12 Oct 88 22:06:22 GMT
Sender: mmdf@udel.EDU
Lines: 27

I am interested in getting power fail protection for my Amiga.
The 2 types are ups - uninterruptable power supply - and
sps - standby power supply. A ups takes line current,
converts it to dc, stores it in a battery, gets dc from the battery,
and converts the dc to ac for whatever needs it. A sps has a
battery it keeps charged, but just passes the line current
along (possibly with some filtering). When the sps detects
that the line current has failed, it switches to its battery
before (we hope) the computer crashes. In general, a sps with
a given capacity is significantly cheaper than a ups with
the same capacity.

Questions:

1. Can the Amiga, its monitor, and attached floppy and hard drives
use a sps, or is a ups needed?

2. If a sps can be used, how quickly must it switch from line
to its internal power.

3. How powerful does the sps or ups need to be for my setup:
Amiga 1000, insider with 1 meg, 1080 monitor, C.Ltd. scsi
controller, 50 meg hard disk?

Thanks,

Marty Cohen (mcohen@nrtc.northrop.com, 128.99.0.1)