Resonant network for plasma power supply and power supply device for plasma generator

A power supply device for igniting a plasma into a plasma generator, the power supply device comprising:

• a power supply unit;
• a transformer comprising a ferrite core coupled to the plasma generator and a primary winding wound on the ferrite core;
• and
• a resonant network connected between the power supply unit and the primary winding,
• wherein the resonant network comprises:
• a resonant inductor connected in series with the power supply unit;
• a resonant capacitor connected in parallel with the primary winding and connected in series with the resonant inductor;
• and
• a passive element connected in series with the primary winding and the resonant inductor and connected in parallel with the resonant capacitor.