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| | After corona discharge, if more further increasing the voltage between the two electrodes, the corona region will gradually expand, brightness and hiss is also growing. When the voltage is increased to a certain value, at some point may appear brush discharge spark fine outward radiation, its scope is much larger than normal corona region, hissing sound accompanied by banging sound. This discharge form is called brush discharges. Voltage continues to rise, more and more long brush-like sparks, and finally will constitute the channel between the positive and negative poles, resulting in the breakdown of gas, the voltage between the poles will subsequently declined sharply. According to the size of the power supply capacity, the breakdown can be expressed in the form of an arc discharge, spark discharge can also be expressed as a form. |