> On Monday 08 December 2003 06:03 am, Hylton Conacher (ZR1HPC) wrote: > > Lanman wrote: > > > On 12/7/2003 at 3:22 PM John Richard Smith wrote: > > >>Lanman wrote: > > >>>John; The basic purpose of a UPS is to filter or condition the > > >>>electrical power which your computer > > >>>receives. Typically, your computer runs off of the battery inside > > >>>the UPS, and a charger keeps the > > >>>battery charged from the wall outlet. > > > > lanman gave you partially incorrect informtion ie that it is continuous! > > John be warned that this is an ideal and preferred setup. > > > > Some UPS's actually let the equipment plugged into it run run off the > > main supplied power that is is also using to charge the batteries, > > filtered of course to prevent spikes but still basically straight > > through. When a power outage occurs the UPS detects this and switches > > the computer supply from the now dead mains supply to the backup mains > > supplied via the battery and an inverter to transform the voltage of the > > battery (12volts DC) to 230v AC. Sometimes the time taken for the UPS to > > switch results in your computer losing power/rebooting. Nothing that a > > kettle would notice but a PC's nightmare.
True, where I live, power spikes, outages, surges, and cuts, are very common. Just a few minutes ago, we had something which appeared to be a power spike, but contrary with my experience with UPS's, the protected computer rebooted. I think I'll have to invest in a better one. Teilhard.
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