Patent ID: 11972928
Assignee: COMET TECHNOLOGIES USA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A plasma generation system, comprising:
a radio frequency generator supplying power;
a plasma chamber coupled to receive the power from radio frequency generator;
an impedance matching network coupled to the radio frequency generator and the plasma chamber reacting to impedance changes to match an impedance of the plasma chamber with an impedance of the radio frequency generator controlling reflection of the power by the plasma chamber;
an arc suppression device coupled to the radio frequency generator and the plasma chamber performing a method comprising:
detecting plasma arcing causing a sharp impedance change increasing the reflection of the power by the plasma chamber;
switching a power dissipator reducing the power delivered to the plasma chamber extinguishing or mitigating the plasma arcing;
wherein the arc suppression device switches the power dissipator more quickly than the impedance matching network reacts to the sharp impedance change.