Radiant energy – Ionic separation or analysis – Ion beam pulsing means with detector synchronizing means
Reexamination Certificate
2007-05-08
2007-05-08
Chen, Shih-Chao (Department: 2821)
Radiant energy
Ionic separation or analysis
Ion beam pulsing means with detector synchronizing means
C250S300000, C315S111510
Reexamination Certificate
active
11186483
ABSTRACT:
A RF power generator for exciting inductively coupled plasma for spectrometry includes an induction coil for exciting the plasma as part of its load circuit. The load circuit also comprises a capacitor connected in parallel with the induction coil. The RF power generator is a free running oscillator having a switching circuit of two MOSFETs alternately switchable on and off via a feedback control circuit from the load circuit. RF power from the switching circuit is coupled to the load circuit via an inductor. The inductor and load circuit is resonant at a first frequency, which is lower than the operating frequency of the power generator.
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A Minh Dieu
Chen Shih-Chao
Fishman Bella
Varian Australia Pty Ltd
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