EP 0226037 B1 19891025 - X-RAY DIAGNOSTIC APPARATUS
Title (en)
X-RAY DIAGNOSTIC APPARATUS
Publication
Application
Priority
DE 3541612 A 19851125
Abstract (en)
[origin: US4731803A] A circuit for operating an X-ray tube, such as in a medical diagnostics apparatus, is connected with a high-voltage generator and a switch mechanism for connecting and disconnecting the X-ray tube to the high-voltage generator. A resistor is disposed in a circuit branch which can be connected in parallel across the X-ray tube by a switch controlled by the aforementioned switch mechanism. If the X-ray tube is disconnected from the power source, the switch closes the circuit branch and causes the resistor to be connected across the X-ray tube. As a result, the X-ray tube voltage decreases relatively quickly after the high-voltage is disconnected. The resistor across the X-ray tube may be a variable resistor, such as a high-voltage triode.
IPC 1-7
IPC 8 full level
H05G 1/56 (2006.01)
CPC (source: EP US)
H05G 1/56 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
EP 0226037 A1 19870624; EP 0226037 B1 19891025; DE 3541612 A1 19870527; DE 3666651 D1 19891130; JP S6292600 U 19870613; US 4731803 A 19880315
DOCDB simple family (application)
EP 86115629 A 19861111; DE 3541612 A 19851125; DE 3666651 T 19861111; JP 18038686 U 19861121; US 91567386 A 19861006