Differential Mode is a method that can disturb the circulation path of the noise, all the noise produced by the Hot and return through the Neutral are called differential mode noise. View>>

Common-mode is a method that can disturb the circulation path of the noise, all the noise produced by the Hot or the Neutral and then return through the ground are called common-mode noise. View>>

ASYCHRONOUS is a converter cannot lies between the two power supply and the load. View>>

SYCHRONOUS is a converter lies between the two power supply and the load. View>>

When the output sine wave power generated by UPS and the input AC power are sine wave, and their frequency and phase are the same, that is synchronization. View>>

The standard power system is three-phase power, because of each phase is sine wave and difference of 120 degrees, while the single-phase is only one phase of the three-phase. View>>

General electric is divided into single-phase and three-phase, while the voltage waveform is sine wave, due to the characteristics of electrical equipment (input terminal is rectifier filter circuit or inductive load), View>>

Refers to the Utility Power interrupt. View>>

It is commonly known as alternating current (AC), it include: voltage, current, frequency, the frequency can be divided into 50HZ (Hz) and 60HZ (Hz) ,voltage distribution from 100V to 240V. View>>

It also be called harmonic interference. harmonics is the odd wave exists in the sine wave (3,5,7, ... ...), the changes have nothing to do with frequency, but have absolute relationship with the changes of voltage and current. View>>