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APPARATUS FOR MEASURING RF VOLTAGE FROM A QUADRUPOLE IN A MASS SPECTROMETER
APPARATUS FOR MEASURING RF VOLTAGE FROM A QUADRUPOLE IN A MASS SPECTROMETER
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机译:用于测量质谱仪中四极杆的射频电压的装置
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摘要
An apparatus for measuring RF voltage from a quadrupole in a mass spectrometer are provided. The apparatus comprises at least one rectifying diode circuit for rectifying the RF voltage of the quadrupole to produce a rectified RF voltage. The apparatus further comprises at least one operational amplifier configured as a current to voltage converter, a negative input of the at least one operational amplifier connected to the output of at least one diode in the at least one rectifying diode circuit, a positive input of the at least one operational amplifier at ground, and an output of the at least one operational amplifier in a feedback loop with the negative input, to reduce reverse leakage current from the at least one diode.
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