已知 NPN 型三极管的输入—输出特性曲线如图 所示,当 ( 1 ) U BE =0.7V , U CE =6V , I C = ? ( 2 ) I B =50μA , U CE =5V , I C = ? ( 3 ) U CE =6V , U BE 从 0.7V 变到 0.75V 时,求 I B 和 I C 的变化量,此时的
【简答题】请将这句话We all know that pushing down on the brake pedal slows a car to a stop. But how does this happen? How does your car transmit the force from your leg to its wheels? How does it multiply the force ...