Methods and apparatus for driving a quadrupole ion trap device
US7193207B1 · kind B1 · utility
20Cited by
9References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2000 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Feb 16, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/4295
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A digital drive apparatus (FIG. 3) for quadrupole device such as a quadrupole ion trap has a digital signal generator (11, 13, 14; 24, 25, 26) and a switching arrangement (16, 17) which alternately switches between high and low voltage levels (V1, V2) to generate a rectangular wave drive voltage. A dipole excitation voltage is also supplied to the quadrupole device to excite resonant oscillatory motion of ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.