circuit or line switching 电路或线路交换
Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth) ground.
请勿接触任何会为通向被测电路的共用侧或电源地的电流提供通路的物体。
Each drive circuit is connected to two lines or one line among three rows of light emitting elements formed in the Y direction.
各驱动电路与在y方向上形成的三行发光元件行中的两行或一行连接。
The line voltage polarity detection circuit detects the polarity of line voltage and controls the drive circuit to conduct or cut off the gate-controlled transistor.
该线电压极性检测电路检测线电压的 极性且控制该驱动电路以导通或截止该栅控晶体管。
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