what is online uninterruptable power supply?

"Offline" and "online" UPS's describe how electrical power is transmitted from the outlet, through the UPS, and into whatever is backed up.

With an offline UPS, power basically goes straight from the outlet, through some surge protectors and filters in the UPS, and into your electrical devices. When power is interrupted, a DC inverter kicks in, converts battery power to AC voltage, and begins to power your devices. There is always a slight lag (time delay) before backup power begins.

With an online UPS, your electrical devices plugged into the UPS are essentially on backup power all the time. In other words, the batteries are constantly being charged and discharged simultaneously. This offers the greatest amount of protection and line voltage filtering, since you have a steady, constant, clean source of power being delivered. There is no lag time between power-failures and backup power. The drawback is that an online UPS tends to use more power during operation. My APC BackUPS 1400 uses 24 watts of power just sitting around with nothing plugged into it!

It is a guaranteed surge protector with a battery back up which will protect your computer (CPU, mouse, monitor, keyboard, programs, etc...) from crashing in case of a power surge like a lighting storm. I have UPS and surge protection with HP for $49.99/year and it is well worth it. Previously to purchasing this service, I just had an electrical surge protector attached to my computer, but an electric power storm surged thru the electric protector and crashed my computer, then I had to reconfigure my hard drive and start all over again like if I had just bought the computer straight from the factory. With the new UPS, the last time I had a lightning storm, I was using my computer and a message came on my screen that said "you have 10 minutes to shut down your computer before you loose any programs". As you must know, you should never leave your computer on when you will be away and an electric storm is in the forecast because then you won't be home to shut it down before it surges!

they're small and much less costly. do no longer assume a lot from them. they're designed to assist you to close down your laptop regularly rather of having it flow off abruptly while the potential fails. they are not designed to run something for a protracted quantity of time. Then a brilliant style of people make the blunders of connecting all varieties of issues to the UPS. lights, radios, even heaters. This prevents the united statesfrom working properly. The batteries would properly be genuinely replaced yet for the main section people don't be concerned. They locate their potential is so stable they overlook they even have the flaws. while the battery is going undesirable the unit beeps at them and that they only disconnect it. in case you reside in a community the place potential is extra unreliable a united statesis substantial. the suited kind can be linked to the laptop so it is going to close down immediately while potential is going out. you do no longer even ought to be there to instruct the laptop off.

Online UPS is also called double-conversion UPS system. Its main advantage that it is protected to battery heat-up when voltage fluctuates high to low. Its cost is some high from general UPS. Online UPS designed with the rectifier and inverter to run continuously with improved cooling systems.