UPS

509

09:57:22

Simple uninterrupted power supply 
Plz if any suggestions 

published 10 years ago

BigB

10 years ago

It's not an uninterrupted power supply if relays are used for switching sources, because a relay always has a time during switching - even if it is quite short - when there is no connection between in- and output. A "real" UPS works a little different. Basically AC in -> rectifier -> battery charger and DAC -> AC out. When the in-voltage fails (going below 86% of nominal voltage) the DAC is powered by the battery, which is ... kind of ... running paralell to the rectifier. There are a few more components and some more "internal steps" involved, but that's the easiest way to explain.

ask2222

10 years ago

You are right sir

ask2223

10 years ago

Basic consept for ups is acceptable

BigB

10 years ago

I'm sorry, but it's not, because it isn't an uninterrupted power supply. It's the basic concept of an emergency backup power supply like an emergency diesel generator. Even if it seems to be the same to many people, these are two different things.

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