Abstract: A mass spectrometer is disclosed comprising an ion optics device housing having one or more external electrical connectors (1719) provided thereon. An ion optics device (301) is arranged inside the ion optics device housing, the ion optics device (301) comprising one or more electrodes for manipulating ions, the one or more electrodes being electrically connected to the one or more external electrical connectors (1719) provided on the ion optics device housing. A voltage supply housing (1717) is provided having one or more external electrical connectors provided thereon. One or more voltage supplies are arranged inside the voltage supply housing (1717), the one or more voltage supplies being in electrical communication with the one or more external electrical connectors provided on the voltage supply housing.

Abstract: A mass spectrometer is disclosed comprising an ion optics device housing having one or more external electrical connectors (1719) provided thereon. An ion optics device (301) is arranged inside the ion optics device housing, the ion optics device (301) comprising one or more electrodes for manipulating ions, the one or more electrodes being electrically connected to the one or more external electrical connectors (1719) provided on the ion optics device housing. A voltage supply housing (1717) is provided having one or more external electrical connectors provided thereon. One or more voltage supplies are arranged inside the voltage supply housing (1717), the one or more voltage supplies being in electrical communication with the one or more external electrical connectors provided on the voltage supply housing.

Abstract: A capacitor assembly (1) for measuring the level of radio frequency voltage in a mass spectrometer. The assembly (1) includes an RF sensing capacitor (2) with first and second capacitor plates (3, 4), a rectifying circuit (5) and a vacuum housing feedthrough (6), all of which are mounted within a vacuum enclosure of the mass spectrometer. The first capacitor plate (3) is adapted for connection to a voltage source and mounted within the enclosure by first insulating spacers (31). The second capacitor plate (4) is nested within the first insulating spacers (31) and mounted within the enclosure by second insulating spacers (41). The rectifying circuit (5) is electrically connected to the second capacitor plate (4) and to the vacuum housing feedthrough (6).

Abstract: A planar transformer comprises a plurality of conductive windings provided by at least one PCB and linked by a common ferrite core passing through the or each PCB. The transformer windings are at least partially magnetically shielded from the ferrite core by a conductive non-continuous shield formed by copper planed areas on one or more of the PCB layers to improve the coupling between the windings.

Abstract: A capacitor assembly (1) for measuring the level of radio frequency voltage in a mass spectrometer. The assembly (1) includes an RF sensing capacitor (2) with first and second capacitor plates (3, 4), a rectifying circuit (5) and a vacuum housing feedthrough (6), all of which are mounted within a vacuum enclosure of the mass spectrometer. The first capacitor plate (3) is adapted for connection to a voltage source and mounted within the enclosure by first insulating spacers (31). The second capacitor plate (4) is nested within the first insulating spacers (31) and mounted within the enclosure by second insulating spacers (41). The rectifying circuit (5) is electrically connected to the second capacitor plate (4) and to the vacuum housing feedthrough (6).

Abstract: A method of producing high frequency high amplitude AC voltages with control of the phase angle between outputs from a plurality of generators having individual DC current controlled variable inductors which method comprises controlling the timing of the circuit to allow inputs at the same frequency to have their phase angle preserved. All the outputs are phase locked and synchronized to a common external timed signal and programmed to the same output frequency.

Abstract: A method of producing high frequency high amplitude AC voltages with control of the phase angle between outputs from a plurality of generators having individual DC current controlled variable inductors which method comprises controlling the timing of the circuit to allow inputs at the same frequency to have their phase angle preserved. All the outputs are phase locked and synchronised to a common external timed signal and programmed to the same output frequency.