Power system use hot and neutral for carrying electricity, so the external lightning stroke and interference may harm the internal electronic components, in order to solve the above problems and reduce noise interference , View>>

It usually refers to the transient voltage drop, when the AC voltage is lower than the normal standard for 1 second, this situation is known as SAG, View>>

It means that the power directly connected into a closed loop by the wire but not through the load. View>>

It can guide the line redundant feedback current and interference into the earth using GND method ,so that avoid the confusion of lines and data. View>>

As American power systems for example, in addition to Hot Line and the Neutral Line, the intermediate round plug Pin is the grounding Pin, it can not only interference the useless current and noise into the earth, but also protect the users not be shock. View>>

In order to prevent electric shock and protect devices, we connect the metal chassis or enclosure of telecommunication equipments with the ground, that is called ground. View>>

It can be seen that bypass is a "preliminary in case" backup circuit. View>>

Crest factor (CF), it is the ratio of the peak value and RMS of cycle waveform. View>>

This is an electromagnetic interference exists in the telecommunications equipment or computer operation equipment, View>>

it is a protection device in the power input terminal, when the electrical equipment plug the wrong power or the power surge is too large, that will cause it damaged, while install the metal oxide varistor have two purposes: View>>