[计] 无源电路

passive circuit的用法和样例：

例句

The invention discloses a current source circuit comprising a first transistor and at least one second transistor.本发明公开了一种电流源电路，此电流源电路包括第一晶体管和至少一第二晶体管。
The half-bridge series resonant current source realizable circuit is presented and its operation principle and timing logic and the design of the key parameters are introduced.给出了实现这种拓扑结构的半桥串联谐振电流源电路，详细介绍了该电路的工作原理及时序，并对其关键参数进行了设计。

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