X-RAY TECHNIQUE (apparatus for radiation diagnosis A 61 B 6/00; X-ray therapy A 61 N; testing by X-rays G 01 N; apparatus for X-ray photography G 03 B; filters, conversion screens, microscopes G 21 K; X-ray tubes
H 01 J 35/00; TV systems having X-ray input H 04 N 5/321)
X-ray tube and at least part of the power supply apparatus being mounted within the same housing
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08
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Electrical details
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10
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Power supply arrangements for feeding the X-ray tube
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12
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with dc or rectified single-phase ac
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14
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with single-phase low-frequency ac
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16
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Reducing the peak-inverse voltage
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18
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with polyphase ac of low frequency
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20
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with high-frequency ac; with pulse trains
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22
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with single pulses
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24
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Obtaining pulses by using energy storage devices (pulse generators H 03 K)
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26
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Measuring, controlling, protecting (measuring electric values G 01 R; measuring X-ray intensity
G 01 T)
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28
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Measuring or recording actual exposure time; Counting number of exposures; Measuring required exposure time
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30
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Controlling
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32
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Supply voltage of the X-ray apparatus or tube (regulating supply without reference to operating characteristics of the apparatus G 05 F)
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34
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Anode current, heater current, heater voltage of X-ray tube (regulating supply without reference to operating characteristics of the apparatus G 05 F)
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36
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Temperature of anode; Brightness of image
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38
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Exposure time
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40
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using adjustable time switch
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42
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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
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44
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in which the switching instant is determined by measuring the amount of radiation directly
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46
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Combined control of different quantities, e.g. exposure time as well as voltage or current
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48
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Compensating the voltage drop occurring at the instant of switching-on of the apparatus (regulating supply without reference to operating characteristics of the apparatus G 05 F)
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50
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Passing the tube current only during a restricted portion of the voltage waveform
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52
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Target size or shape; Direction of electron beam, e.g. in tubes with one anode and more than one cathode
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54
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Protecting (overload protection combined with control H 05 G 1/46)
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56
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Switching-on; Switching-off
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58
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Switching arrangements for changing-over from one mode of operation to another, e.g. from radioscopy to radiography, from radioscopy to irradiation
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60
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Circuit arrangements for obtaining a series of X-ray photographs or for X-ray cinematography
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61
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for obtaining stereoscopic photographs [5]
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62
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Circuit arrangements for obtaining X-ray photography at predetermined instants in the movement of an object, e.g. X-ray stroboscopy
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64
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Circuit arrangements for X-ray apparatus incorporating electronic image converters, e.g. image intensifiers [5]
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66
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Circuit arrangements for X-ray tubes with target movable relatively to the anode
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68
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Circuit arrangements for Lilienfeld tubes; Circuit arrangements for gas-filled X-ray tubes
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70
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Circuit arrangements for X-ray tubes with more than one anode; Circuit arrangements for apparatus comprising more than one X-ray tube
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00
Apparatus or processes specially adapted for producing X-rays, not involving X-ray tubes, e.g. involving generation of a plasma (X-ray lasers
H 01 S 4/00; plasma technique in general H 05 H) [5]
