Patent · US Expired

Apparatus for the measurement of the X-ray tube high voltage

US4400821A · kind A · utility

5Cited by

2References

2Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Horst Aichinger · Ergolding, DE
Heinz-Erik Kranberg · Erlangen, DE

Key dates

Filing date	Mar 31, 1982
Grant date	Aug 23, 1983
Priority date	—
Expiry date	Mar 31, 2002

Classification

Technology area (CPC G)Physics
CPC primaryG01R15/144
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In an exemplary embodiment, two radiation detectors are present which are covered on their inlet sides for the radiation by two x-ray filters of different absorption. A divider divides the two output signals of the radiation detectors so that its output signal is a measure of the time variation of x-ray tube voltage during an exposure. The output signal of the divider is supplied to a time measurement circuit which provides a measure of the exposure time during which the x-ray tube voltage is greater than or equal to a predetermined value.

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