APPARATUS FOR MEASURING RF VOLTAGE FROM A QUADRUPOLE IN A MASS SPECTROMETER

摘要

A kind of device is provided from four-electrode spectrum for measuring RF voltages. The equipment includes at least one rectifier diode circuit rectifies quadrupole RF voltage to generate rectified RF voltage. The equipment further includes that at least one operational amplifier is configured as current-to-voltage converter, at least one rectifier diode circuit of at least one connected diode of the output end of the negative input end of at least one operational amplifier, in the positive input terminal of at least one operational amplifier, it is being grounded, at least one of output of operational amplifier feedback is looked up and down and negative input end, reduces reverse leakage current from least one diode.