Patent · US Expired

Circuit for adjusting tube anode current in an X-ray generator

US4177406A · kind A · utility

11Cited by

3References

6Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Bernd Hermeyer · Henstedt-Ulzburg, DE
Rudolf Ochmann · Hamburg, DE

Key dates

Filing date	Jan 25, 1978
Grant date	Dec 4, 1979
Priority date	—
Expiry date	Jan 25, 1998

Classification

Technology area (CPC H)Electricity
CPC primaryH05G1/34
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Filament current values associated with different X-ray tube anode currents and voltages are stored in various locations of a memory. For an X-ray exposure, the measured value of filament current or anode current is compared with the values stored and the values stored are connected, if necessary. Variations of the emission characteristics of the X-ray tubes as caused, for example, by aging are thus automatically corrected.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.