Fast switching circuit for x-ray imaging applications
US7742573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2008 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Oct 17, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/58
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system is provided, which includes a rotatable gantry for receiving an object to be scanned. The system includes an x-ray source for projecting x-rays of two different energy levels towards the object and also a power supply, which energizes the x-ray source to two different voltage levels at a predetermined rate for generating x-rays at two different energy levels. The power supply in the system includes a fixed voltage source to input a voltage to a switching module with number of identical switching stages. Each stage in the switching module consists of a first switch, which charges a capacitor in a conducting state and output a first voltage, a second switch, which connects the fixed voltage source and the capacitor in series to output a second voltage in a conducting state and a diode which blocks a reverse current from the capacitor to the power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.