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举一反三
【单选题】如图所示的限幅电路,VREF = 3V，vI = 0V时，二极管采用理想模型，对应输出电压vo为（ ）。【图片】【图片】
A.
0V
B.
0.7V
C.
3V
D.
3.7V
【单选题】In the wake of 11 September, Visionics, a leading manufacturer, issued a fact sheet explaining how its technology could enhance airport security. They called it "protecting civilization from the faces...
A.
any way, the face-recognition technology is good enough to frighten the terrorists
B.
the industry will have to recognize the real situation and work hard to improve the technology
C.
all the claims are premature
D.
we must not expect too much
【单选题】如图所示的限幅电路,VREF=3V，vI=0V和4V时，二极管采用理想模型，对应输出电压vo为（ ）。【图片】
A.
0V,4V;
B.
0V,0V;
C.
0V,3V;
D.
0V,3.7V;
【单选题】二极管电路如图所示。输入电压只有0V或5V两个取值。利用二极管理想模型分析，在vI1和vI2电压的不同组合情况下，输出电压vO的值是 。【图片】 【图片】
A.
v O 的a列
B.
v O 的b列
C.
v O 的c列
D.
v O 的d列