問與答
將接收線圈接上儀表放大器(實驗室可能有三種包括INA828，INA128的新改版)，在發射線圈以0.2A弦波驅動時，改變感測線圈位置及指向，同時在示波器紀錄驅動電流(電流探棒量測)及感測放大波形，觀察相位差及振幅。
按讚
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