模电课后习题(四)

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⚪8.1⌱Ḅᫀᐭᑁ஺(1)ᦔḄ᩽ᵯᵫ()ḄᡂḄ஺A."#B.$#C.%&'#(2)ᦔ(&())ᑴ+Ḅᵯ#ᘤ-஺A.ᵯB.ᐝC.ᵯ/(3)ᦔᑭᵨ᜜3ᵯ/45Ḅ()ᩭ)ᑴ᩽ᵯḄᜧ8Ḅ஺A.ᵯB.ᵯC.ᵯ/(4)9:᩽+ᨔ<=>?ᦔ()஺A.@ᐭᵯA8B.ᑴBCDEᩖC.GᜧHIJ(5)KᦔḄ᩽Lᵯ/DM2mANO3mAP?QḄR⚣TUV()஺A.WᜧB.X8C.YN(6)ZᦔḄ[ᱯឋ᝞ᵫ⚪&1_ᡠa?ᑣc()ᦔ஺A.Wd+NMOSB.ὑf+NMOSC.ὑf+PMOS(7)Kὑf+ᦔCBgGᜧhP?ᦔiḄᦪk⊤mnO()஺%=^DsseB.i=ூDSSZGS—”DS)-C.=I(1~)-DDSSVGS(off)(8)K᪕pᵯ/%s=OVP?HrCBᙠឤhḄᦔᨵ()஺A.v+B.Wd+MOSC.ὑf+MOSᫀ(1)B(2)C(3)B(4)C(5)A(6)B(7)C(8)AC8.2wxᦔḄ@yᱯឋz{᝞⚪8.2_(a)ᡠa?|yQᙠឤhḄ[ᱯឋz{஺⚪8.2_

1}~ᙠᦔ@yᱯឋz{ḄឤhBᙶ᪗Ḅᚖ{?᝞⚪8.2_(a)ᡠa?yᐸ9ᔜᩩz{Ḅᙶ᪗%S?iD=/(VGS)ᙶ᪗??{?ᓽᑮ[ᱯឋz{?᝞⚪8.2_(b)ᡠa஺8.3ᙠ⚪8.3_ᡠaᵯ¢£?wxᦔḄW=-5V§¨ᙠ©ᑡ«&¬©?#ᑖ¯CBᙠ°±²᝱´(1)V=-8V,V=4V(2)VS=-3V,V=4V(3)vs=-3V,v=lVGSDSGDSGDS}~(1)»O%s<%,ᡠ½#CBᙠ¾¿h஺(2)»O>%,Áv>v-V,ᡠ½#CBᙠDScspឤh஺(3)»O%§>%?Áv0V,ᡠ½TIONÛ⍝Wd+MOS?v>VS.v>v-V,GJTDScsT»Þ#ᜐgឤh஺ঝT2~VT=-4V<0V,ᡠ½T2OPÛ⍝Wd+MOS?â$>ä?»Þ#ᜐg¾¿h;ঞT3~V=-4V<0V,ᡠ½T3OPÛ⍝Wd+MOS?â<ᓃ•?ÁVDS>%s(ᓃTP?»Þ#ᜐgNᵯAh§ᵫÞᑨÖyQÔᔜéḄCB²᝱᝞}8.4⊤ᡠa஺}8.4⊤ÎvT/vVs/VvG/vVD/VCB²᝱T,4-513ឤh-43310¾¿hT-4605NᵯAh38.5wxZv+ᦔḄ/DSS=2IIIA,%=—4V,É|yQḄ[ᱯឋz{ì@yᱯឋz{?Ìíî|y⚜ᜳÖñò஺

2}~᪷ôõöD=/DSS(1(Ḇ)?⌲ùyúḄVGS©Ḅ8?íî|y[ᱯឋì@yᱯឋ§ᙠ@yᱯឋ£?Vᔜᩩz{ûVGD=%Ḅüýᩭ?þOÿᜳ
᝞8.58.6ᵯ᝞⚪8.6ᡠᦔḄᱯឋ᝞⚪8.2ᡠᑖ᪆h=4Vஹ8Vஹ12V%&'()ᦔᑖ*+,ᙠ./01஺⚪&6⚪&75᪷7⚪8.2ᡠᦔḄᱯឋ89ᐸ;<ᵯ=ᱏ=5V,᪷7⚪8.6ᡠᵯ89VGS=V10জA=4VBVGS<"ᦑᦔDE஺ঝG=8HBv>V,ᦔNO஺ᎷQᦔ+,ᙠឤS0᪷7ᱯឋGST89iD30.6mA,=ZVDS[%c-9?db10V,cdH3>%sfᓃ■ijᎷQᡂlᓽᦔ+,ᙠឤS0஺ঞA=12VBᵫpVcc=12V,qᯠsᦔ+,ᙠ8tᵯu0஺8.7ᵯ᝞⚪8.7ᡠQFETḄxᦪz5/=3mA,%>=-3V஺ᓽᑖ*z)ᑡ}~DSSᦪBᑨ
FETᜐᙠ⛳0⛳0⛳0ḄᵯS஺(l)/?=3.9kQফ/?D=10kQD5⚪8.7ᡠzN⍝ᦔ(l)Ri)=3.9kQB5=0Vᑣ%=/°ss(lf>=3(1—=3mAv=V-iR—15—3x3.9=3.3VDSccDd

3czzs>%s—VpᡠFET+,ᙠ⛳0e=3mA(2)R]>=10kQB5VGS=0Hᑣ5=//MS(1f)2=3(1-r)2=3mArp3v=V-z/?=15-3xlO=-15VDSccD(/czVDS

44=FA=-5&=R«=1MQ&=R-5kQD8.9ᵯ᝞⚪8.9(a)ᡠ§9FETḄ+,¯ØḄÙNgm=1ms஺(1)ÈᵯḄÉÊË°ᦔᵯ஺(2)ᵯ=ÚÛ4஺(3)ÜᵯuÝᵯuR஺஺(a)Þᜧᵯ⚪8.95(1)ÉÊË°ᦔᵯ᝞⚪8.9(b)ᡠ஺(2)AvA.=—=5%5(&஻&)=-g(/?///?J=-lxl()Tx(1(R஻10%)a-5mrfᓃ“বR,=43+(44&2)=2075ᦇ஺&=RD=10^Q8.10f~MOSFETḄ©ªᱯឋ᝞⚪8.10ᡠ(ᐸæ᩽ᵯSipḄèᔣéḄê▭èᔣ)஺ìí5(1)FETὑïÚðñ(2)N⍝P⍝FET?(3)óô~©ªᱯឋØ8FETḄᜳ
ᵯ=Vp;<ᵯ=VT?ᐸ°põöñ⚪8.11:ᐸ;<ᵯ=V=-4V«T8.11f~JFETḄ©ªᱯឋÀ᝞⚪8.11ᡠ஺ìí5(1)'ùN⍝P⍝ḄFET?(2)éḄᜳ
ᵯ=ú⛳æ᩽ᵯS/DSSᔜõöñ5N⍝JFET,ᜳ
ᵯ=ü=-4V,æ᩽ᵯS/Dss=4mA஺

58.12ÚðFETýᔲᵨÿ
Ḅᩭ☟᝱ᳮᵫ஺ᵫFETᙠ&=0"#iD=O(()ᵯ+⍝)#./ᙠIVGSAVTI(VT012ᵯ)"3ᨵ5#67#ḄMOS:;ᵨ=
Ḅᩭ☟᝱஺8.13ᵯC᝞⚪8.13FᡠH஺FET(T,)ḄJᦪ0gm=0.8ms,r=200kQTU᩽(T)d2ḄJᦪ᜛=40,"e=lkQ஺(1)\]^ᜧᵯCḄ`abcᦔᵯC஺(2)ef^ᜧᵯCḄᵯg4hiᐭᵯkl஺--O+VDD(+18V)஺3HI~஺vR364200UF+Y5MC[J2g%_45஽[⚪8.13Fp(1)ᵫr»R,ᦑtuvᶍ#⚪&13FḄ`abcᦔᵯC᝞8.13FᡠH஺dd8.13F`abcᦔᵯC(2)xᵯg4hiᐭᵯkᵨi]ᵯV஺=-%$ᵯkRdḄᵯyi=%%+(1+{].RdᵫbḄKCL:g-Y"ᓽ+஺#u•__________g"?□______ᔆߟ1τ%RdPV1ᦑᔛ=[g,"+P]+:1;ᨴ]a=g",%[1+”;;%+(1+0ᨴ]lRd

6ᵫKVLᓃ=Vgs+%g"K'l"i+%±(l+/ᡠᵯgA.==----------------------%-------------«0.89ᓃ+g#3l+B]++(1+£)&□RdiᐭᵯkR=R+(RIIR)«R=5AMQtg3glg2g38.14ᵯC᝞⚪8.14F(a)ᡠH#FET(T,)Ḅ)0gm#AᜧTBJT(T)Ḅᵯy^ᜧ2£ᦪ0᜛#iᐭᵯk0¤஺(1)T1ஹT2ᔜ§¨©ª᝱஺(2)\]ᵯCḄ`abcᦔᵯC஺(3)ᑏ]^ᜧᵯCḄᵯg4ஹ#ஹiᐭᵯk᯿i]ᵯkR஺Ḅ⊤5¯஺⚪&14Fp(1)°0±᩽i]ᘤ(ᐳ´᩽)#T20ᐳµ᩽ᵯC஺(2)ᵯCḄ`abcᦔᵯC᝞⚪8.14F(b)ᡠH஺(3)xᵯg4ஹiᐭᵯkli]ᵯkl-=-¶(///&)=-·/s(&஻&)ᓃ=%+=%+g,vr=%(1+gr)ngsbembeᵯga=ஹ=%&'RJTRJᓃ1+Srmheiᐭᵯk&=(i]ᵯkR=Roc8.15⚪8.15FᡠHᵯC0{º=»ᵯCḄ¼iᐭkᢙµ᩽¾¿ᘤ஺ឋ:(1)ᵯgÁÂ01஺

7(2)ÃÄC3Åᐭ=»uÆÇ´᪕ᵯÉÊiᐭkᢙḄËÌ஺(3)ÃÄC2Åᐭ=»ᜧᜧͼÎ^ᜧᵯCḄiᐭᵯk஺p(1)ᵫᵯCFuÏT|ªᡂ±᩽¾¿ᘤ#67Ò{Ó^ᜧᵯCḄᵯgA”=1TÒÕÓ^ᜧᵯCᵫT2ªᡂµ᩽i]ᘤ(µ᩽¾¿ᘤ)#ÖÓḄᵯgAஹ,஺1#67#᦮Ø^ᜧᵯCḄᵯgAஹ.=A#ÙA#2~1஺(2)ÛᦔÜ´᪕᩽ÝᵯÉ0Cdg஺ÞÁᐭᵯÉC3ß#60C3àáCdgᜧâ#67#ᙠ{⚣᳛æᑁuèC3é0êC#ᑣCdgḄ{ìíÞÁᑮi]ì#ïᐸñ{ìÁᑮiᐭì஺ᵫᵯCḄᵯgÁÂ1,67Þiᐭab%òᓄ"#Cdgôìᵯõòᓄö÷íø#íÞö÷ùᨵúyᵯyabyûCdg#ᓽ7"CdgíÞ1C#67#ÃÄC3Åᐭ=»uÆÇ´᪕ᵯÉQgÊiᐭkᢙḄËÌ஺(3)ÞÁᐭᵯÉaß#ᙠ{⚣᳛æᑁuèaé0êC஺ü"`|ḄýìíÞÁᑮÎᵯCḄi]ì#ïRgiḄþìÁᑮᵯCḄiᐭì஺ᵫᵯCḄᵯgÁÂ1,67ÞiᐭabÿᓄRgiᵯᓄRgi(2)ᵯC2"ᐭ$%&'(᪕᩽+,ᵯ-./01ᐭᵯ2Ḅ4567ᜧᜧ9:;<ᜧᵯ-Ḅ1ᐭᵯ2஺8.16ᵯ-᝞⚪8.16D(a)ᡠG,IJKgi=100kd7?=300kQ,/?=2MQ,7?=10kQ,/?=10kQ,g2g3dsl&2=2kf2,VDD=20V,gm=1ms0(1)]^ᵯ-Ḅ_`ᦔᵯ-஺ফcᵯdefA,,஺(3)c<ᜧᘤḄ1ᐭᵯ2R1^ᵯ2R஺஺ij(1)_`ᦔᵯ-᝞⚪&16D(b)ᡠG஺(2)ᵯdef4=—="8"'VssR1=-33ᓃ4+g,.7Rஹ2(3)1ᐭᵯ2(=%+*஻RQ=2.075MQ1^ᵯ2&,=,=10kQ

88.17t᩽1^ᘤᵯ-᝞⚪8.17D(a)ᡠGuJFETyz{|Ḅ}~^,=0.9s,ᐸᦪ᝞nDᡠG஺(1)]^ᵯ-Ḅ_`ᦔᵯ-஺(2)cᵯdefAஹ,ஹ1ᐭᵯ2ஹ1^ᵯ2஺(a)<ᜧᵯ-⚪8.17Dij(1)_`ᦔᵯ-᝞⚪8.17D(b)ᡠG஺(2)cᵯdefAஹ,ஹ1ᐭᵯ2ஹ1^ᵯ2R஺ᵯdef4=—==0.92ᓃ4+1ᐭᵯ2/?,=R"+(4“஻&2)=2.075MQ1^ᵯ2R=7?//—=1.02fcQov8.18ᑭᵨMultisimᑖ᪆DP8.8(a)ᡠGᦔ<ᜧᵯ-ஹRdஹRsᓄQ{ஹA,.ஹRiஹᓃmḄ45஺ijᶍ8.19ᦔ<ᜧᵯ-᝞⚪8.16DᡠGᑭᵨMultisimᑖ᪆ᑡ⚪j(1)¡¢£¤ᵯ-ᦪ¥ᵯ-ḄQ{ᔠ〉¨(2)©1^ᵯdª«^¬⚔®ᜫ°ᑣ&²³´µ¶·©1^ᵯdª«^¬¸®ᜫ°ᑣ&²³´µ¶·¹᦮ᐵᵯ-ᦪ¥Q{ᜧ¼ᙠ¾¿ÀḄ{¨(3)⌕Â9:ᵯ-Ḅᵯd<ᜧÃÄ&²³´µ¶·ijᶍ