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1. 发明授权

US4171487A X-ray diagnostic generator in which the X-ray tube voltage is regulated via the X-ray tube current 失效
标题翻译： X射线诊断发生器，X射线管电压通过X射线管电流调节
公开(公告)号：US4171487A
公开(公告)日：1979-10-16
申请号：US914168
申请日：1978-06-09
申请人： Heribert Amtmann , Hans Ebersberger , Guenther Eckardt , Hans-Joachim Greiner
发明人： Heribert Amtmann , Hans Ebersberger , Guenther Eckardt , Hans-Joachim Greiner
IPC分类号： H05G1/32 , H05G1/12 , H05G1/34
CPC分类号： H05G1/32
摘要： In an exemplary embodiment, in order to operate the X-ray diagnostic generator with a decreasing (or "falling") load during an X-ray exposure, there is disposed in the primary circuit of the high voltage transformer a bridge rectifier in whose D.C. current branch there is disposed a series of networks each consisting of at least one resistance and one capacitor in parallel, and a switch for the purpose of switching the network into and out of the circuit. A timing control initially short circuits the resistance-capacitance networks to provide for maximum primary current at the start of an exposure, the shunt capacitor absorbing such primary current when each resistance-capacitance network is first switched into the circuit to initiate a relatively smoothly decreasing primary current as a function of time. As secondary voltage tends to decrease, the X-ray tube current is progressively reduced to maintain the selected X-ray tube voltage, the result being the desired smoothly decreasing load characteristic.
摘要翻译：在示例性实施例中，为了在X射线曝光期间以降低（或“下降”）负载来操作X射线诊断发生器，在高压变压器的初级电路中设置有桥式整流器，其DC 目前的分支设置了一系列网络，每个网络由并联的至少一个电阻和一个电容器组成，并且用于将网络切换到电路中的开关。定时控制最初使电阻 - 电容网络短路，以便在开始曝光时提供最大的一次电流，当每个电阻 - 电容网络首先切换到电路中时，并联电容器吸收这种初级电流以启动相对平滑地减小的初级电流当前作为时间的函数。随着二次电压的降低，X射线管电流逐渐减小以维持所选择的X射线管电压，结果是期望的平滑降低的负载特性。

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