Pulse voltage, refers to a short burst of voltage or current, common pulse shapes are rectangular pulse, square wave pulse, spike pulse (positive and negative spike pulse), sawtooth pulse, step pulse, intermittent sinusoidal pulse, etc. Pulse voltage has a sudden change and discontinuity! Pulse voltage waveforms are square waves that beat similar to a human pulse!
The higher the field strength, the easier it is for the gas medium to produce localized ionization breakdown and spark discharge. The use of high-voltage pulse power supply method for power supply, can improve the electric field breakdown voltage of space operation.
Extended information:
Applying a pulse voltage to a gas, when the pulse voltage rises to the breakdown voltage U0 (static breakdown voltage) under the action of a continuous voltage, the electric field gap is not an immediate breakdown, but needs to go through a td time before the breakdown is completed.
t1=ts+tf is the discharge delay. ts is the statistical delay, that is, from t0, to the gap in the emergence of an effective electron time; tf for the discharge formation delay, that is, from the emergence of effective electrons caused by a strong ionization process, to the gap to the time required for the complete breakdown. The total discharge time consists of three parts, t0, ts and tf.
Because of the long discharge time delay of the extremely inhomogeneous electric field and the short duration of the pulsed supply voltage, the discharge time delay cannot be neglected. For the pulsed voltage applied on the electric field, after a period of time (discharge time delay td), the pulsed power supply provides a voltage value greater than the static breakdown voltage U0, which can continue to provide the energy of the electric field required for the discharge electrode to produce effective electrons, the electric field breakdown.
Reference:Baidu Encyclopedia-Pulse Voltage
Reference:Baidu Encyclopedia-Pulse