Optically isolated current monitoring for ionization systems
US7795885B2 · kind B2 · utility
5Cited by
7References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2007 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jun 1, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C3/68
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Current is measured in an ionization device that includes a high voltage supply, and an emitter electrically coupled to the HV supply. An opto-isolator is provided that includes a light source and a light detector. The light source has a current flowing through it. The light source is electrically coupled to the emitter. The output of the light detector is measured. The output of the light detector is related to the current flowing through the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.