电子控制单元。包括由转速传感器控制的开关晶体管，用来断开或接通初级电路。
Electronic control unit. Contains a switching transistor controlled by a speed sensor and is used to open and close the primary circuit.
该结构包括在传感器的测试期间能断开且然后能转换回到导通以提供对传感器的ESD分流的开关元件。
The structure includes a switching element that can be switched off during testing of the sensor and then switched back on to provide ESD shunting to the sensor.
通过使传感器基板与被检查基板相对地进行一次移动，能够确定有无断开和断开位置。
By a correspondingly movement between the sensor substrate and the detected substrate, it is able to determine whether it is disconnected and whether it is the disconnected position.
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