問題詳情

53.輻射偵測時如何最有效率降低高能量宇宙射線的背景干擾?
(A)使用石墨屏蔽
(B)使用鉛屏蔽
(C)使用符合屏蔽電路設計
(D)使用反符合屏蔽電路設計

參考答案

答案:D
難度:困難0.2
書單:沒有書單,新增

用户評論

此ID: 清者自清 誤入此】評論

使用反符合屏蔽電路設計其中包含了一個電容器或一個電容器,輸出電壓由反饋元件決定

清者自清】評論

 Anegativefeedback connection is provided, which contains either a capacitor or aresistor. The operational amplifier has a high open-loop gain (>104 ) and ahigh input impedance (>1012 ohm). Because of this, the output voltage isdictated by the feedback element, independent of the open-loop gain, and thepotential between the positive and negative inputs of the amplifier (called theerror voltage) is maintained very low Inthe integrate mode (Fig. 6.8A)圖文出處:khans-the-physics-of-radiation-therapy-5e-2014-pdf-unitedvrg-.pdf

Klose Liu】評論

A negativefeedback ...

Guan Hong Lin】評論

使用反符合屏蔽電路設計...