一、填空题1.-1;-2;-132.1;4003.放大;NPN4.5.595.222.2;2;314.2二、单选题D、C、D、B、B三、简答题1.VVVV100608022212232.变压,整流,滤波,稳压四、计算题1.戴维宁定理:143OUV,053R,01OUIRRA。2、解:VRRRUuuScc5105101010)0()0(332212分VUuSc10)(2分sCR5.010100105631`2分Veeuuututtcccc)510()]()0([)()(22分32()()10tCCdutitCedt2分3、212420PIRW4.解:(1)V4CC2B1B2BBURRRV(1分)BBECEE1.7mAVUIIR(1分)CB45μAII(1分)CECCCCEE5.2VUURIRI(1分)(2)(2分)(3)beE2620010.79rkI(2分)CLube//71.2RRAr(2分)iB1B2bebe////0.79rRRrrk(2分)k2CoRr(1分)(4)Au变大,ri和ro不变。(3分)5.213()Oiiuuu