FR2046475A5 - X-ray diagnosis equipment with a current- - time product relay - Google Patents

X-ray diagnosis equipment with a current- - time product relay

Info

Publication number
FR2046475A5
FR2046475A5 FR7015014A FR7015014A FR2046475A5 FR 2046475 A5 FR2046475 A5 FR 2046475A5 FR 7015014 A FR7015014 A FR 7015014A FR 7015014 A FR7015014 A FR 7015014A FR 2046475 A5 FR2046475 A5 FR 2046475A5
Authority
FR
France
Prior art keywords
current
time product
relay
charged
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7015014A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19691922398 external-priority patent/DE1922398C3/en
Application filed by Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of FR2046475A5 publication Critical patent/FR2046475A5/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • H05G1/38—Exposure time
    • H05G1/42—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube

Abstract

The current-time product relay is used to set the exposure time and to compensate for supply voltate variations by controlling the tube voltage and current. The control circuit used regulates the relay dependent on the instantaneous mains voltage in the sense of maintaining a constant preset value of current-time product and hence the tube voltage, which determines the radiation dose, irrespective of mains voltage variations. A charged capacitor and a flip-flop relay circuit are used, the former being charged in proportion to the tube current and the flip-flop triggering to end the exposure when the capacitor has charged to the preset required threshold voltage which is adjustable.
FR7015014A 1969-05-02 1970-04-24 X-ray diagnosis equipment with a current- - time product relay Expired FR2046475A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691922398 DE1922398C3 (en) 1969-05-02 Adjustable milliampere second relay for an X-ray diagnostic apparatus

Publications (1)

Publication Number Publication Date
FR2046475A5 true FR2046475A5 (en) 1971-03-05

Family

ID=5733038

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7015014A Expired FR2046475A5 (en) 1969-05-02 1970-04-24 X-ray diagnosis equipment with a current- - time product relay

Country Status (2)

Country Link
AT (1) AT297867B (en)
FR (1) FR2046475A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440137A1 (en) * 1978-10-25 1980-05-23 Siemens Ag RADIOLOGICAL GENERATOR FOR RADIODIAGNOSTIC APPARATUS COMPRISING A MAS RELAY

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440137A1 (en) * 1978-10-25 1980-05-23 Siemens Ag RADIOLOGICAL GENERATOR FOR RADIODIAGNOSTIC APPARATUS COMPRISING A MAS RELAY

Also Published As

Publication number Publication date
AT297867B (en) 1972-04-10
DE1922398B2 (en) 1977-03-17
DE1922398A1 (en) 1970-11-12

Similar Documents

Publication Publication Date Title
FR2046475A5 (en) X-ray diagnosis equipment with a current- - time product relay
GB1462596A (en) Radiographic apparatus
GB1328376A (en) X-ray apparatus
US2486089A (en) Time delay control
GB1261088A (en) X-ray tube kilovoltage control system
GB1375460A (en)
GB1079830A (en) Welding control circuit
JPS5253683A (en) X-ray radiation preventing circuit
GB1001694A (en) Regulated power supply current limiter
FR2243577A1 (en) X-ray diagnostic appts. for film exposure series - has automatic exposure meter and dose power meter controlling tube voltage
GB569547A (en) Improvements in and relating to x-ray apparatus
CA573741A (en) X-ray tube heater current regulating circuit
GB1025148A (en) A diagnostic radiology apparatus
ES246443A1 (en) A circuit provision to obtain a continuous current voltage. (Machine-translation by Google Translate, not legally binding)
GB1035048A (en) A diagnostic radiology apparatus
FR1603827A (en) Relay system for operating radiography tubes
GB1109737A (en) Improvements in or relating to installations for making x-ray photographs
GB919516A (en) Improvements in or relating to x-ray diagnosing apparatus with automatic exposure time limitation
GB874939A (en) Improvements in or relating to apparatus employing electronic valve devices
CA631027A (en) Automatic x-ray tube voltage regulating devices
GB975658A (en) Improvements in integrator
JPS5338996A (en) X-ray device
AU279403B2 (en) Improvements relating tothe control of current in electrolytic apparatus
GB1289416A (en)
CA570898A (en) X-ray tube voltage control circuit

Legal Events

Date Code Title Description
ST Notification of lapse