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