UPS's (Uninterruptible Power Supply) The 9 Most Common Power Problems:

power failure power sags power surges brownouts line noise high voltage spikes frequency variation switching transients harmonic distortion

We have 3 Technologies
to solve your Power Problems

Best
Type	Pros	Cons
On-Line UPS	No Switching 100% line conditioning & regulation Good sustained brownout protection Typically sine wave output Intelligent monitoring & shutdown	Traditionally more expensive
Solves Problems 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9

Better
Type	Pros	Cons
Line Interactive	Moderately priced Usually lightweight Adds brownout protection Adds voltage regulation Complete power data avaliable for intellegent monitoring and shutdown	Causes switching glitch of 5 to 20 milliseconds
Solves Problems 1 - 2 - 3 - 4 - 5

Good
Type	Pros	Cons
Standby Power Systems	Usually inexpensive Usually lightweight	Causes a switching glitch of 5 to 20 milliseconds No line conditioning or regulation "Fooled" by brownouts and frequency shifts Typically not sine wave output Switching time can triple during brownouts Limited power data available
Solves Problems 1 - 2 - 3