发明名称 |
X-Ray diagnostic generator with an inverter supplying the high-tension transformer |
摘要 |
In an exemplary embodiment a direct-current supply with adjustable d.c. voltage supplies an inverter which in turn drives the high-tension transformer. High-tension capacitors are connected at the output of the high-tension rectifier, and control loops are provided for the x-ray tube voltage and the x-ray tube current. The controlled variable is the inverter frequency in the control loop for the x-ray tube voltage. There is a program storage in which an optimum d.c. voltage for the inverter input is programmed for each pair of settings of x-ray tube voltage and current. There can be a function generator present which before the start of the radiograph supplies a control signal corresponding to an inverter input voltage lying a predetermined amount above the respective programmed value. The inverter input voltage may be regulated by a feedback control loop, and the set point value from program storage may be temporarily increased by the function generator at the start of a radiograph.
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申请公布号 |
US4295049(A) |
申请公布日期 |
1981.10.13 |
申请号 |
US19800117549 |
申请日期 |
1980.02.01 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
EBERSBERGER, OTTO;KUEHNEL, WERNER |
分类号 |
H02M3/137;H02M3/315;H02M7/515;H05G1/46;(IPC1-7):H05G1/32 |
主分类号 |
H02M3/137 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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