X-ray tube current control with constant loop gain
US4930146A · kind A · utility
16Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Jul 10, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/34
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The tube current in an X-ray tube is controlled by a closed loop control circuit in which a tube current feedback signal is used to control X-ray tube filament current. The gain of the feedback loop is maintained substantially constant over a wide range of tube currents by inserting a signal proportional to the reciprocal of the tube current command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.