1.如圖 1、圖 2所示,請問 (1)電晶體 Vce 的電壓值是多少? (2)如..-阿摩線上測驗
1F boy789q 小六下 (2018/07/07)
(1) IC(sat)= Vcc / Rc = 0.5ma IB=Vcc-Vbe / Rb = 10-0.7 / 372k =0.025mA IC = B* IB = 100*0.025MA = 2.5 mA Vce = Vcc - IcRc = 10 - 2.5mA * 2k = 5V (2)Rb 開路 開路後 Vcc = Vce = 10Vdc (3) Rb = 100k IB = Vcc-Vbe /Rb = 10-0.7 / 100k =0.093mA IC = B * IB = 100* 0.093 = 9.3ma 飽和 故Vce(sat) = 0.2V |