EP 0669791 B1 19991229 - Rotary anode x-ray tube comprising a circuit arrangement for accelerating and braking of the rotary anode
Title (en)
Rotary anode x-ray tube comprising a circuit arrangement for accelerating and braking of the rotary anode
Title (de)
Drehanoden-Röntgenröhre mit einer Schaltungsanordnung zum Beschleunigen und Abbremsen der Drehanode
Title (fr)
Tube radiogène à anode tournante avec un circuit d'accélération et de freinage du anode tournante
Publication
Application
Priority
DE 4405767 A 19940223
Abstract (en)
[origin: EP0669791A1] The stator coils (2,3) of the rotary anode drive motor is supplied with phase-offset AC voltages in the acceleration mode. In a brake mode at least one stator coil (2) is supplied with a DC voltage (10-12, 20-22). Both modes are controlled. At least one stator coil is coupled to a voltage source. In the first operational mode the source delivers a periodical AC voltage, while in a second operational mode it delivers a pulsed DC voltage. To the stator coil is parallel connected a switchable diode assembly (30) of such polarity that the pulsed DC voltage operates it in blocking direction. The control (14-16; 34-36) holds the AC voltage source in first state in the acceleration mode and switches-off the diode assembly. In the brake mode the source is held in the second state and the diode assembly is switched-on.
IPC 1-7
IPC 8 full level
H05G 1/66 (2006.01)
CPC (source: EP US)
H05G 1/66 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 4405767 A1 19950824; DE 59507499 D1 20000203; EP 0669791 A1 19950830; EP 0669791 B1 19991229; JP 3558722 B2 20040825; JP H07263177 A 19951013; US 5566219 A 19961015
DOCDB simple family (application)
DE 4405767 A 19940223; DE 59507499 T 19950216; EP 95200374 A 19950216; JP 3085995 A 19950220; US 38937895 A 19950216