Influence of approaching speed on air electrostatic discharge

The influence of the approaching speed of two conductors on the air electrostatic discharge (ESD) was investigated by theoretical analysis and experimental measurement. The self-capacitance (mutual-capacitance) coefficient, the potential difference, the rate of change of potential difference with respect to discharge gap separation, the rate of change of potential difference with respect to time for approaching two conductors were calculated. The correlations between discharge peak currents and induced peak-peak voltages and different approaching speeds at 5 kV and 10 kV discharge voltage levels were obtained by experiment. The approaching speed determines the rate of change of potential difference with respect to time at the time of breakdown, and it also determines the air discharge trai