Control system for starter for X-ray tubes
US4760588A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 1984 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | May 8, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/66
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A boost circuit for providing rapid acceleration of anode rotating motors for X-Ray tubes features provision for supplying to the motor for a limited period of time a relatively high power AC excitation at a frequency well above that corresponding to the rotation speed to be maintained during exposure. Once proper operating speed is reached, the motor power supply voltage is reduced to a safe power level with respect to the stator windings, and the frequency is reduced to correspond to the desired running speed during exposure. In the preferred embodiment the changeover is governed by means of an empirically adjusted timer; however, changeover may be controlled by a variety of means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.