发明名称 |
X-ray diagnostic apparatus |
摘要 |
A pre-ignition type X-ray apparatus including a mode changeover switch which changes a pre-heat mode to an X-ray irradiation mode and vice versa, a tube current control circuit for feedback control of the X-ray tube's filament heating current to a target value, and pre-heat control circuit for controlling the filament heating current in the pre-heat mode to a target value lower than the target value in the X-ray irradiation mode. The pre-heat control circuit includes a differential amplifier which amplifies the difference between the detected voltage corresponding to a source voltage and the reference voltage determining the lower target value, so that the control signal is outputted from the differential amplifier.
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申请公布号 |
US4809311(A) |
申请公布日期 |
1989.02.28 |
申请号 |
US19870040355 |
申请日期 |
1987.04.17 |
申请人 |
KABUSHIKI KAISHA MORITA SEISAKUSHO |
发明人 |
ARAI, EIICHI;MORI, KEISUKE;MAKINO, TAKAO |
分类号 |
H05G1/34;(IPC1-7):H05G1/34 |
主分类号 |
H05G1/34 |
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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