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91. 发明授权

US4670893A X-ray diagnostic apparatus 失效
标题翻译： X光诊断仪
公开(公告)号：US4670893A
公开(公告)日：1987-06-02
申请号：US685302
申请日：1984-12-24
申请人： Akira Tsuchiya
发明人： Akira Tsuchiya
IPC分类号： H05G1/30 , H05G1/34 , H05G1/58 , H05G1/20
CPC分类号： H05G1/34 , H05G1/58
摘要： A DC voltage from a DC power source is supplied through a high speed switching device to a capacitor provided in the primary side of a transformer and a primary winding, thereby generating a high frequency signal at the primary winding of the transformer. A voltage between the first and the second output terminals of the transformer is applied between the anode and the filament of the X-ray tube as an X-ray tube voltage. Here, a system control device reads out a plurality of optimum switch control data for diagnostic items on the basis of various condition data from a subject information inputting device, and supplies them to the high speed switching device. The switching device varies the switching speed on the basis of the plurality of given switch control data, thereby instantaneously varying the value of the X-ray tube voltage.
摘要翻译：来自直流电源的直流电压通过高速开关装置供给到设置在变压器初级侧的电容器和初级绕组，由此在变压器的初级绕组产生高频信号。变压器的第一和第二输出端之间的电压作为X射线管电压施加在X射线管的阳极和灯丝之间。这里，系统控制装置根据来自被摄体信息输入装置的各种状况数据读出多个用于诊断项目的最佳切换控制数据，并将其提供给高速切换装置。开关装置根据多个给定的开关控制数据来改变开关速度，从而瞬间改变X射线管电压的值。

92. 发明授权

US4590603A Automatic X-ray entrance dose compensation 失效
标题翻译：自动X射线入口剂量补偿
公开(公告)号：US4590603A
公开(公告)日：1986-05-20
申请号：US569179
申请日：1984-01-09
申请人： Gary F. Relihan , Joseph J. Grass , Jerry L. Neitzell
发明人： Gary F. Relihan , Joseph J. Grass , Jerry L. Neitzell
IPC分类号： H05G1/36 , H05G1/44 , H05G1/46 , H05G1/34
CPC分类号： H05G1/36 , H05G1/44 , H05G1/46
摘要： An X-ray tube is movable between a minimum distance from an image receptor and a maximum distance. Signals are generated representative of the X-ray tube focal spot-to-image distance (SID), the peak kilovoltage (kVp) that is to be applied to the X-ray tube anode during a fluorographic exposure and the desired brightness of the X-ray image. The signals are processed in a manner that results in a control signal being developed that adjusts the X-ray tube filament current in a way that produces an X-ray tube current (mA) during the exposure which results in a constant limited X-ray dose rate at the X-ray beam entrance plane of a patient at any permissible kVp and SID setting and assures that the dose rate limit will not be exceeded at minimum permissible SID regardless of the selected kVp.
摘要翻译： X射线管可以在与图像接收器的最小距离和最大距离之间移动。产生代表X射线管焦点到图像距离（SID）的信号，在荧光曝光期间施加到X射线管阳极的峰值千伏（kVp）和X的期望亮度 -ray图像。处理信号的方式使得控制信号被开发，以在曝光期间产生X射线管电流（mA）的方式调节X射线管灯丝电流，这导致恒定的有限X射线在任何允许的kVp和SID设置下在患者的X射线入射面处的剂量率，并且确保不管所选的kVp如何，在最小允许SID下不会超过剂量率限制。

93. 发明授权

US4573184A Heating circuit for a filament of an X-ray tube 失效
标题翻译： X射线管灯丝的加热回路
公开(公告)号：US4573184A
公开(公告)日：1986-02-25
申请号：US655073
申请日：1984-09-26
申请人： Shigeru Tanaka , Toshihiro Onodera
发明人： Shigeru Tanaka , Toshihiro Onodera
IPC分类号： H05G1/34
CPC分类号： H05G1/34
摘要： The dissipation of the filament power of an X-ray tube is controlled by a heating circuit including a voltage resonance type DC-to-DC converter and a filament current detector/controller. The DC-to-DC converter is comprised of a switch, a capacitor, a damper diode and a transformer. These circuit elements constitute a voltage resonance type switch. A DC voltage is interrupted and applied to the primary winding of the transformer. The AC voltage is induced to the secondary winding of the transformer, thereby heating the filament of the X-ray tube. In accordance with the load curve of the X-ray tube, the filament heating voltage can be controlled within a control range defined by the resonant conditions of the switch.
摘要翻译： X射线管的灯丝功率耗散由包括电压谐振型DC-DC转换器和灯丝电流检测器/控制器的加热电路控制。 DC-DC转换器由开关，电容器，阻尼二极管和变压器组成。这些电路元件构成电压谐振型开关。直流电压中断并施加到变压器的初级绕组。 AC电压被感应到变压器的次级绕组，从而加热X射线管的灯丝。根据X射线管的负载曲线，可以将灯丝加热电压控制在由开关的谐振条件限定的控制范围内。

94. 发明授权

US4446569A X-Ray diagnostic generator for an X-ray tube comprising several focal spots 失效
标题翻译：用于X射线管的X射线诊断发生器，其包括若干焦点
公开(公告)号：US4446569A
公开(公告)日：1984-05-01
申请号：US217215
申请日：1980-12-17
申请人： Kurt Franke
发明人： Kurt Franke
IPC分类号： H05G1/20 , H05G1/34 , H05G1/30
CPC分类号： H05G1/34 , H05G1/20
摘要： In an exemplary x-ray generator with several focal spots, a supply device for energizing the heating filaments for the respective focal spots comprises a single filament supply transformer for all heating filaments with which generator circuitry for supplying different frequencies is connected, and one filter each is connected between each heating filament and the secondary winding of the filament transformer. The pass bands of the filters correspond to the different generator frequencies.
摘要翻译：在具有若干焦斑的示例性X射线发生器中，用于为各个焦点激发加热丝的供应装置包括用于所有加热丝的单丝供应变压器，用于提供不同频率的发生器电路与其连接，并且每个连接在每个加热灯丝和灯丝变压器的次级绕组之间。滤波器的通带对应于不同的发生器频率。

95. 发明授权

US4334153A X-Ray tube grid bias supply 失效
标题翻译： X射线管栅极偏置电源
公开(公告)号：US4334153A
公开(公告)日：1982-06-08
申请号：US191789
申请日：1980-09-29
申请人： Harold E. Stehman , Herbert E. Daniels
发明人： Harold E. Stehman , Herbert E. Daniels
IPC分类号： H05G1/52 , H05G1/00 , H05G1/34
CPC分类号： H05G1/52 , A61B6/548
摘要： An adjustable focus x-ray tube has its cathode connected to the negative side of a dc power supply which is below ground by half of the total voltage applied to the tube and its anode connected to the positive side of the supply which is above ground by half of the applied voltage. A voltage divider is connected between the negative side or cathode and ground and an intermediate point on the divider is connected to a focusing electrode in the x-ray tube for providing a focusing bias voltage. Since the bias voltage is derived from the cathode-to-ground voltage it will always track or remain proportional to the cathode voltage so the effect of variations in the latter on focusing will be negated.
摘要翻译：可调节的聚焦X射线管的阴极连接到直流电源的负极侧，该直流电源的接地电压低于施加到管的总电压的一半，其阳极连接到高于地面的电源的正极侧一半的施加电压。分压器连接在负侧或阴极与地之间，分配器上的中间点连接到x射线管中的聚焦电极，以提供聚焦偏压。由于偏置电压是从阴极到地电压导出的，所以它总是跟踪或保持与阴极电压成比例，因此后者对聚焦的变化的影响将被否定。

96. 发明授权

US4317040A Low ripple regulated X-ray tube power supply filament transformer 失效
标题翻译：低纹波调节X射线管供电灯丝变压器
公开(公告)号：US4317040A
公开(公告)日：1982-02-23
申请号：US242097
申请日：1981-03-09
申请人： Don E. Wuerflein
发明人： Don E. Wuerflein
IPC分类号： H01F30/16 , H05G1/06 , H05G1/10 , H05G1/20 , H05G1/30 , H05G1/32 , H05G1/34
CPC分类号： H05G1/20 , H01F30/16 , H05G1/06 , H05G1/10 , H05G1/30 , H05G1/32 , H05G1/34
摘要： A low ripple high voltage power supply and a filament transformer for use therewith in a dental X-ray system are disclosed. The power supply utilizes a rectifier and regulator circuit to provide a low voltage regulated DC signal, a DC-AC converter for providing a high-frequency chopped power signal suitable for efficient transformation to a high voltage, followed by a multiplier for generating the final high voltage signal to be applied to the X-ray tube. A high frequency clock circuit is used for driving the converter and also for controlling logic circuitry used to develop the regulator control signals. Both a voltage and a current control loop are utilized in the regulator control, and the tube anode current and filament current are controlled as a function of sensed anode current. The filament transformer is coaxially structured, employs a single turn secondary, and insures minimal high voltage stress areas within the tubehead of the X-ray system.
摘要翻译：公开了一种低纹波高压电源和用于牙科X射线系统的灯丝变压器。电源利用整流器和调节器电路来提供低压调节DC信号，DC-AC转换器，用于提供适合高效转换为高电压的高频斩波功率信号，随后是用于产生最终高电平的乘法器电压信号施加到X射线管。高频时钟电路用于驱动转换器，还用于控制用于开发调节器控制信号的逻辑电路。在调节器控制中都使用电压和电流控制回路，并且将管阳极电流和灯丝电流作为感测到的阳极电流的函数进行控制。灯丝变压器同轴结构，采用单匝次级，确保X射线系统管头内的最小高压应力区域。

97. 发明授权

US4039811A Method of operating and power supply for X-ray tubes 失效
标题翻译： X射线管的操作和电源方法
公开(公告)号：US4039811A
公开(公告)日：1977-08-02
申请号：US635068
申请日：1975-11-25
申请人： Frieder H. Ennslin , Richard J. Buck
发明人： Frieder H. Ennslin , Richard J. Buck
IPC分类号： H05G1/34 , H05G1/38 , H05G1/30
CPC分类号： H05G1/34 , H05G1/38
摘要： A power supply and timing circuit for an X-ray tube capable of maintaining constant X-ray exposure values and stable peak plate voltage despite relatively large variations in the voltage of the source from which the power supply is fed. The cathode-to-plate current in the X-ray tube is varied responsively to changes in the voltage of the source, thereby varying the load on the high voltage transformer and holding its output voltage at a constant value despite changes in the source voltage. Changes in the cathode-to-plate current may be compensated for by the use of a milliampere-second integrator to time the exposure.

98. 发明授权

US3912936A X-ray image intensifier system 失效
标题翻译： X射线图像增强器系统
公开(公告)号：US3912936A
公开(公告)日：1975-10-14
申请号：US28969172
申请日：1972-09-15
申请人： MACHLETT LAB INC
发明人： CUNNINGHAME ANDREW LEES , WAGNER HOWARD GRADY
IPC分类号： H05G1/34 , H05G1/64 , G21F5/02
CPC分类号： H05G1/64 , H05G1/34
摘要： An X-ray system including an X-ray generator disposed to direct an X-ray beam through an adjustable collimating means and onto the input end of an image intensifier tube, the output end of the intensifier tube being disposed adjacent sensing means for detecting the size of the output image, and control means for actuating the collimating means to adjust the X-ray beam in accordance with electrical signals received from the sensing means.

99. 发明授权

US3783287A Anode current stabilization circuit x-ray tube having stabilizer electrode 失效
标题翻译：阳极电流稳定电路具有稳定电极的X射线管
公开(公告)号：US3783287A
公开(公告)日：1974-01-01
申请号：US3783287D
申请日：1972-05-18
申请人： PICKER CORP
发明人： ATLEE Z , FULTON G , GAGER R
IPC分类号： H02M7/06 , H05G1/34
CPC分类号： H05G1/34
摘要： A stabilization circuit for maintaining the anode current of an x-ray tube substantially constant is described including a first stabilization means in which a stabilization voltage signal proportional to changes in the anode current is applied to a stabilization electrode in such tube. A stabilization electrode is positioned behind the cathode filament with respect to the anode and collects a portion of the electrons emitted from the filament to reduce the number of electrons striking the anode. The amplitude of the stabilization voltage determines the amount of electrons collected by the stabilizer electrode and thereby maintains the anode current constant. A second stabilization means of slower operation gradually takes over from the first stabilization means and varies the cathode filament heating current in order to maintain the electron flow to the anode constant in response to a control signal produced by a differential amplifier comparator means which is proportional to the stabilization voltage applied to the stabilizer electrode. Light signal coupling is employed between the x-ray tube anode current monitor and the stabilizer electrode power supply, as well as between such power supply and the differential amplifier for voltage insulation purposes.
摘要翻译：描述了一种用于维持X射线管的阳极电流基本上恒定的稳定电路，其包括第一稳定装置，其中将稳定电压信号与阳极电流的变化成比例地施加到该管中的稳定电极。稳定电极相对于阳极定位在阴极丝的后面，并收集从灯丝发射的电子的一部分以减少撞击阳极的电子数。稳定电压的幅度决定了由稳定电极收集的电子的量，从而保持阳极电流恒定。慢速操作的第二稳定装置从第一稳定装置逐渐接管，并且改变阴极灯丝加热电流，以便响应于由差分放大器比较器装置产生的控制信号而使电流流向阳极恒定，该控制信号与施加到稳定电极的稳定电压。在X射线管阳极电流监测器和稳定电极电源之间以及这种电源和差分放大器之间采用光信号耦合用于电压绝缘目的。

100. 发明授权

US3766391A Rms current regulator for an x-ray tube 失效
标题翻译：用于X射线管的RMS电流调节器
公开(公告)号：US3766391A
公开(公告)日：1973-10-16
申请号：US3766391D
申请日：1972-04-24
申请人： CGR MEDICAL CORP
发明人： SIEDBAND M , JAMES J
IPC分类号： H05G1/34 , H05G1/32
CPC分类号： H05G1/34
摘要： A solid state RMS current regulator for controlling the amount of X-rays produced by an X-ray generator. The filament power to the X-ray generator is regulated by obtaining the average of the square of the instantaneous current through the filament of the X-ray generator. This indication is in perfect proportion to the square of the effective or RMS current and is directly related to the average power delivered to the filament. The sensed indication is compared with an X-ray generator operation reference signal for firing a semiconductor switch to control the RMS current through the filament.
摘要翻译：一种用于控制由X射线发生器产生的X射线量的固态RMS电流调节器。通过获得通过X射线发生器的细丝的瞬时电流的平均值来调节X射线发生器的细丝功率。该指示与有效或RMS电流的平方成正比，与传递给灯丝的平均功率直接相关。将感测到的指示与用于点燃半导体开关的X射线发生器操作参考信号进行比较，以控制通过灯丝的RMS电流。

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