Power supply system for a quadrupole mass spectrometer
First Claim
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1. A power supply system for a quadrupole mass spectrometer comprising:
- means for generating RF (radio frequency) voltages;
means for dividing the RF voltages to produce subdivided RF voltages;
means for detecting the RF voltages to produce a detected voltage;
means for generating DC (direct current) voltages from the subdivided RF voltages obtained by said RF voltage dividing means, the subdivided RF voltages being rectified by the DC voltage generating means under control of the detected voltage while a proportional relationship is being maintained between the detected voltage and the resultant DC voltages; and
means for superimposing the resultant DC voltages over the RF voltages, the superimposed voltages being applied to the quadrupole mass spectrometer.
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Abstract
A power supply system for a quadrupole mass spectrometer includes an RF (radio frequency) power source for generating RF voltages and a voltage divider functioning as a DC (direct current) voltage generating circuit. This voltage divider divides the RF voltages and then rectifies them so as to derive DC voltages while maintaining a proportional relationship to the RF voltages. Thereafter, the DC voltages are superimposed on the RF voltages. The resultant voltages are applied to the electrodes of the quadrupole mass spectrometer.
36 Citations
6 Claims
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1. A power supply system for a quadrupole mass spectrometer comprising:
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means for generating RF (radio frequency) voltages; means for dividing the RF voltages to produce subdivided RF voltages; means for detecting the RF voltages to produce a detected voltage; means for generating DC (direct current) voltages from the subdivided RF voltages obtained by said RF voltage dividing means, the subdivided RF voltages being rectified by the DC voltage generating means under control of the detected voltage while a proportional relationship is being maintained between the detected voltage and the resultant DC voltages; and means for superimposing the resultant DC voltages over the RF voltages, the superimposed voltages being applied to the quadrupole mass spectrometer. - View Dependent Claims (2, 3, 4, 5, 6)
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