27 如圖所示之電路,假定 β = 100 且 VBE(on) = 0.7 V,若電晶體之直流工作點 VCEQ = 5 V 且 ICQ= 10 mA, 求 RB之值為何? (A) 34 kΩ (B) 68 kΩ (C) 102 kΩ (D) 136 kΩ
IBQ = ICQ /beta = 10/100 = 0.1mA
IEQ = IBQ*(beta+1) = 0.1*101 = 10.1mA
27 如圖所示之電路,假定 β = 100 且 VBE(on) = 0.7 V,..-阿摩線上測驗