Apparatus and method for coupling RF and AC signals to provide power to a multipole in a mass spectrometer

摘要

An apparatus and method for coupling RF and AC signals to provide power to a multipole in a mass spectrometer is provided. A first circuit comprises: an RF power source for providing difference mode power to the multipole via the RF signal; at least one inductor for forming at least one resonant LC circuit with the multipole for providing voltage gain for the RF signal; and a transformer, comprising a secondary tap, the transformer connected in parallel to the RF power source and further connected to the at least one inductor such that the signals injected into the secondary tap are communicated to the at least one resonant LC circuit. A second circuit comprises: an AC power source for providing common mode power to the multipole via the AC signal, an output from the second circuit connected to the secondary tap such that the common mode power is injected into the first circuit and the multipole can be operated in common mode and difference mode simultaneously; and at least one inductor for forming a resonant LC circuit with the multipole via the transformer, to provide voltage gain for the AC signal.

主权项

1. An apparatus for coupling RF and AC signals to provide power to a multipole in a mass spectrometer, the apparatus comprising:
a first circuit comprising: an RF power source for providing difference mode power to said multipole via said RF signal; at least one inductor for forming at least one resonant LC circuit with said multipole for providing voltage gain for said RF signal; and a transformer comprising a secondary tap, said transformer connected in parallel to said RF power source and further connected to said at least one inductor such that signals injected into said secondary tap are communicated to said at least one resonant LC circuit; and a second circuit comprising: an AC power source for providing common mode power to said multipole via said AC signal, an output from said second circuit connected to said secondary tap such that said common mode power is injected into said first circuit and said multipole can be operated in common mode and difference mode simultaneously; and at least one inductor for forming a resonant LC circuit with said multipole via said transformer, to provide voltage gain for said AC signal.