发明名称 |
Compact solid state klystron power supply |
摘要 |
A line type modulator for modulating an RF power device in a medical linear accelerator is described. The modulator employs a low voltage DC power source and a flyback transformer. Current sensing circuitry senses current in the primary winding of the flyback transformer and generates a current sense signal indicative thereof. A solid-state switching stage is coupled between the DC power source and the flyback transformer which electrically connects and disconnects the DC power source and the primary winding in response to a control signal. Control circuitry coupled to the current sensing circuitry and the switching stage generates the control signal in response to the current sense signal. The anode of a charge diode assembly is coupled to the secondary winding of the flyback transformer. A delay element is coupled to the cathode of the charge diode assembly. A pulse forming network is coupled to the delay element and generates an energy pulse. A solid-state switch assembly is also coupled to the cathode of the charge diode assembly and discharges energy stored in the pulse forming network via the delay element in response to a trigger signal. A pulse transformer coupled to the pulse forming network delivers the energy pulse to the RF power device.
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申请公布号 |
US5933335(A) |
申请公布日期 |
1999.08.03 |
申请号 |
US19980007574 |
申请日期 |
1998.01.15 |
申请人 |
SIEMENS MEDICAL SYSTEMS, INC. |
发明人 |
HITCHCOCK, ROGER N.;MARZIALE, MICHAEL J.;THOMPSON, LANCE W. |
分类号 |
H05G2/00;A61N5/10;H02M9/04;H03K3/015;H03K3/57;H03K17/10;H03K17/567;H03K17/60;H03K17/723;(IPC1-7):H02M3/335 |
主分类号 |
H05G2/00 |
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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