UPS should refer to the uninterruptible power supply (similar to the battery, power failure automatically connected to electricity), such as some computer servers need to use what. Should those big companies have a client in the field or what the company's website needs to be uninterrupted online. If the power outage. The What is the spare?
What is UPS?
???The so-called uninterruptible power supply system, that is, when the power outage can take over the mains of electricity continue to supply electricity equipment, its power from the battery pack, due to the rapid response of electronic components, power outages in 4 to 8 milliseconds or no time to continue Supply of electricity.
Why use UPS?
Now the world's mass supply system are AC power, an ideal AC power supply, should meet the following conditions:
1. Frequency stability
2. Voltage stability (soil within 5%)
3. Does not contain harmonic distortion (<5%)
4. No noise interference (in line with IEEE 587, FCC, CE and other standards)
5. Low output impedance.
