Pulsed power supply system - is for discharge equipment for treating workpieces and prevents glow discharge passing over into damaging arc discharge

摘要

The power supply (100) for ion-nitriting and ion-coating equipment, produces pulses of variable frequency for applying to the glow-discharge path. The energy of each pulse is kept constant independently of the type of discharge and its parameters. The energy of each pulse is less than the minimum energy needed to cause an arc discharge -- which would damage the workpiece being treated. However, if an arc discharge does occur, the next pulse is delayed by a time interval greater than the de-ionising time of the discharge path.