IPC 7 English version
H05G-H05G00200

SECTION H – ELECTRICITY


H 05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR


H 05 GX-RAY TECHNIQUE (apparatus for radiation diagnosis A61B 6/00; X-ray therapy A61N; testing by X-rays G01N; apparatus for X-ray photography G03B; filters, conversion screens, microscopes G21K; X-ray tubes H01J 35/00; TV systems having X-ray input H04N 5/321)


1/

00X-ray apparatus involving X-ray tubes; Circuits therefor

1/

02.Constructional details

1/

04..Mounting the X-ray tube within a closed housing

1/

06...X-ray tube and at least part of the power supply apparatus being mounted within the same housing

1/

08.Electrical details

1/

10..Power supply arrangements for feeding the X-ray tube

1/

12...with dc or rectified single-phase ac

1/

14...with single-phase low-frequency ac

1/

16....Reducing the peak-inverse voltage

1/

18...with polyphase ac of low frequency

1/

20...with high-frequency ac; with pulse trains

1/

22...with single pulses

1/

24....Obtaining pulses by using energy storage devices (pulse generators H03K)

1/

26..Measuring, controlling, protecting (measuring electric values G01R; measuring X-ray intensity G01T)

1/

28...Measuring or recording actual exposure time; Counting number of exposures; Measuring required exposure time

1/

30...Controlling

1/

32....Supply voltage of the X-ray apparatus or tube (regulating supply without reference to operating characteristics of the apparatus G05F)

1/

34....Anode current, heater current, heater voltage of X-ray tube (regulating supply without reference to operating characteristics of the apparatus G05F)

1/

36....Temperature of anode; Brightness of image

1/

38....Exposure time

1/

40.....using adjustable time switch

1/

42.....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

1/

44......in which the switching instant is determined by measuring the amount of radiation directly

1/

46....Combined control of different quantities, e.g. exposure time as well as voltage or current

1/

48....Compensating the voltage drop occurring at the instant of switching-on of the apparatus (regulating supply without reference to operating characteristics of the apparatus G05F)

1/

50....Passing the tube current only during a restricted portion of the voltage waveform

1/

52....Target size or shape; Direction of electron beam, e.g. in tubes with one anode and more than one cathode

1/

54...Protecting (overload protection combined with control H05G 1/46)

1/

56..Switching-on; Switching-off

1/

58..Switching arrangements for changing-over from one mode of operation to another, e.g. from radioscopy to radiography, from radioscopy to irradiation

1/

60..Circuit arrangements for obtaining a series of X-ray photographs or for X-ray cinematography

1/

61...for obtaining stereoscopic photographs  [5]

1/

62..Circuit arrangements for obtaining X-ray photography at predetermined instants in the movement of an object, e.g. X-ray stroboscopy

1/

64..Circuit arrangements for X-ray apparatus incorporating electronic image converters, e.g. image intensifiers  [5]

1/

66..Circuit arrangements for X-ray tubes with target movable relatively to the anode

1/

68..Circuit arrangements for Lilienfeld tubes; Circuit arrangements for gas-filled X-ray tubes

1/

70..Circuit arrangements for X-ray tubes with more than one anode; Circuit arrangements for apparatus comprising more than one X-ray tube


2/

00Apparatus or processes specially adapted for producing X-rays, not involving X-ray tubes, e.g. involving generation of a plasma (X-ray lasers H01S 4/00; plasma technique in general H05H) [5]