【用戶】劉政文
【年級】高一上
【評論內容】 ib ie ioAi = ---- * ----- * ----- = [ 100k / (100k + rpi + Re*100) ] * 100 * (1/2) ii ib ieIB = -0.7 / (100k + 10k *100) = 6.36*10^-7rpi = 25m /( 6.36*10^-7 ) = 39.3kAi = 100k / 639.3k *50 = 7.82最接近的答案 == A
【用戶】一問三不知
【年級】幼稚園下
【評論內容】Ib = Ii * 100K / [(10k//10k)*100+100k] = Ii * 100k/600k , Ib/Ii= 1/6Ie / Ib= 100Io=Ie * 10k / (10k+10k) = Ie * 1/2 , Io / Ie = 1/2 Io/Ii = Io/Ie * Ie/Ib * Ib/Ii = 1/2 * 100 * 1/6 = 8.333333333333333333
【用戶】卓家宏
【年級】國三下
【評論內容】共集極 CC Av=1Ri = 100K//(1+B)(10K//10K) = 83.33KRo = 10K Ai = Av* Ri/Ro = 1*83.33/10 = 8.33