如果是相反方向，半导体闸流管无法开启。
电源部分配置有绝缘的半导体闸流管模组。
The power section is constructed of isolated thyristor modules.
这间隔时间t1有时叫半导体闸流管的电路换向恢复时间。
This interval t1 is sometimes called the circuit-commutated-recovery time of the thruster.
此外，西门子为中国合作伙伴在设计和生产半导体闸流管阀门，转换变压器和控制系统方面提供支持。
Furthermore Siemens supports its Chinese partners in design and manufacturing of thyristor valves, converter transformers and control systems.
如果在这间隔时间结束之前加一正向电压到半导体闸流管，设备可能过早地启动，并可能导致设备和电路损坏。
If a forward voltage is applied to the thruster before this interval has passed, the device may prematurely turn on and damage to the device and circuit could result.
在t1期间，通过半导体闸流管维持一反向电压，并且正是在这之后，设备易于保持一正向电压，而无需开启电源。
During t1 a reverse voltage must be maintained across the thruster and only after this time is the device capable of blocking a forward voltage without going into its on-state.
半导体闸流管数据表显示，在t1间隔时间期间生成一特定的反向电压以及这间隔时间随之而来的率上升特性的电压。
Thruster data sheets specify t1 with a specified reverse voltage applied during this interval as well as a specified rate-of-rise of voltage beyond this interval.
半导体闸流管数据表显示，在t1间隔时间期间生成一特定的反向电压以及这间隔时间随之而来的率上升特性的电压。
Thruster data sheets specify t1 with a specified reverse voltage applied during this interval as well as a specified rate-of-rise of voltage beyond this interval.
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