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Tips To Select An Uninterruptible Power Supply

Written by oneself on 7:44 AM

By: Angel Solutions

If you need something for preventing the unscheduled downtime or data loss when there is a sudden loss of power then there is a UPS (Uninterruptible Power Supply) which is an inexpensive way to protect your computer hardware and files from unexpected power loss.Uninterruptible power supply is not enough for this operation. Software, hardware and configuration etc. all together establish a UPS system in order to recover from power fluctuations or unexpected power loss that can damage your system.
But how can you select the right Uninterruptible power supply for your system?

Following are the steps to choose Uninterruptible power supply:

Step 1: If your budget is limited then select a standby or "��off-line"�� UPS that switches to battery power when the power fails.

Step 2: If you require an unlimited backup power then select an "on-line" UPS.

Step 3: If your need lies between the two other types then choose a "line-interactive" UPS.

Step 4: Find out the requirements of the total power needs of equipment in terms of watts and volt-amperes that you will connect to the UPS

Step 5: Select an uninterruptible power supply that exceeds or equals the total power needs of the equipment that you will connect to it

Step 6: Don't forget to compare the following specifications and these are:
1.surge suppression (in joules - more is good)
2.maximum surge current (in amps - more is good)
3.battery recharge time (faster is good)
4.suppression response time (faster is good)
5.number of AC outlets (more is good)

Step 7: Find out the unit under consideration containing a replaceable battery which is user-replaceable.

Step 8: Compare battery operating times.

Step 9: Look for LEDs or alarms that show wiring issues, whether the battery is low and whether the equipment is running on UPS battery.

Step 10: Check for a unit with electromagnetic interference, modem surge protection and radio-frequency interference noise deduction if you require those features

Step 11: If you buy a more expensive unit the you will get it with software that automatically closes applications, saves documents and turns off equipment when power fails.

Step 12: Compare insurance guarantees as well as warranties

Article Source: http://www.eArticlesOnline.com

About the Author:
Riello-ups.co.uk is a leading manufacturer and supplier of Uninterruptible Power Supplies and standby power systems in various ranges. Here you can find the best Uninterruptible Power Supply and power protection systems.

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Unbiased review of the new iPhone 4

Written by oneself on 6:40 AM

by christopher ciprian

It's acknowledged. Consumer Reports' technicians have just completed testing the iPhone 4, and have confirmed that there is a shortcoming with its signal. When your finger or hand comes in contact with a spot on the phone's lower left side-a very easy thing, more so even for lefties-the signal can severely degrade enough to cause you to lose your connection altogether if you're in an area with a weak signal. Due to this problem, we can't recommend the iPhone 4.We induced this outcome after testing all three of our iPhone 4s (purchased at three separate distributers in the New York area) in the controlled environment of CU's radio frequency (RF) isolation chamber. In this room, which is impervious to outside radio signals, our test technicians plugged in the phones to our base-station emulator, a apparatus that simulates carrier cell towers (see video: IPhone 4 Design Defect Confirmed). We also tested several other AT&T phones the same way, including the iPhone 3G S and the Palm Pre. None of those phones had the signal-loss mishaps of the iPhone 4.

Our outcomes call into question the recent claim by Apple that the iPhone 4's signal-strength issues were generally an optical illusion resulted by insufficient software that "incorrectly displays 2 more bars than it should for a given signal strength."

The tests also indicate that AT&T's reception might not be the primary suspect in the iPhone 4's much-communicated signal woes.

We did, however, find an within your pocketbook strategy for suffering iPhone 4 users: Cover the antenna gap with a piece of duct tape or another thick, non-conductive material. It may not be lovely, but it works. We also expect that using a case would do away with the symptoms. We'll investigate a few cases this week and report back.

The reception fault is a primary reason that we did not cite the iPhone 4 as a "advisable" model, even though its evaluation in our other tests mounted it atop the latest Product reviews of smart phones that were produced today.

The iPhone evaluated high, to a degree because it sports the most sought display and best video camera we've ever found on any smartphone, and even dominates its high-scoring competitors with more suitable battery life and such modern day features as a front-facing camera for video chats and a built-in gyroscope that turns the phone into a super-responsive game controller. But Apple essentially needs to develop a permanent-and free-fix for the antenna issue before we can encourage the iPhone 4. click here

About the Author

Average Joe

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