ESP works in order to ensure normal movement of the electrostatic precipitator, Corona's scope should not be too large, generally it should be limited to around the corona electrode. In the electric field, ions in the air free To move the poles, the higher the voltage, the higher the electric field intensity, the faster speed of movement of ions. Initially, free ions in the air less, less current. If further progress voltage, air ionization (corona) is gradually expanding the scope of the last pole between all the air ionization, a phenomenon known as the electric field breakdown. In the electric field, ions in the air free To move the poles, the higher the voltage, the higher the electric field intensity, the faster speed of movement of ions. The air near the discharge electrode ionization after all, can be seen in the vicinity of the discharge electrode around the pale blue aura, the aura is called the corona. Because the movement of ions, the formation of a current between electrodes. After the voltage rises to a certain value, the discharge electrode around the ion energy and obtain a higher speed when they hit the air in the neutral atoms, neutral atoms will break down into positive and negative ions, a phenomenon known as air ionization. In place far away from the corona electrode, the electric field intensity is small, the moving speed of ions is small, where the air has not been ionized. Thus, this is called the corona discharge wire pole. After air ionization, because interlock reaction between the number of ions in polar motion is greatly increased, the performance of the current (called the corona current) increased dramatically between the poles, the air became a conductor. When the electric field breakdown spark discharge, telephone short pause ESP work.