共射—共基组合电路图.ewb

Multisim2001软件的仿真电路实例261例

Electronics Workbench Circuit File
Version: 5
Charset: ANSI
Description: 
"共射—共基组合电路图" 
"        扩展频带三种方法：反馈、补偿、组合电路。" 
"        电路中第一级是共发组态电路；第二级是共基组态电路。" 
"        共基级的输入阻抗成为共射极的负载。由于共基级电路有很低的输入阻抗，比起将负载电阻Rc直接接在共射级集电极来，共射级的负载阻抗减小了许多，使密勒电容大为减小，从而使共射级的上截止频率提高。而共基极组态电路，不计感性输入阻抗时，其上截止频率要比共射组态电路高得多。" 
"        这一混合连接电路的上截止频率，取决于共射级，故整个共射—共基电路的上截止频率比单个共射级的高。另一方面，共基级的输出电流近似等于其输入电流，而共基极的输入电流等于共射级的输出电流，故在负载电阻相同的条件下，组合连接电路的放大倍数，与单个共射电路的放大倍数相同。这样，以付出一个相同器件的代价，保持增益不变，频带却得到展宽。" 
"        缺点：1. 输出阻抗大，不能承受重负载，特别是容性负载会明显地使其频带变窄。" 
"                    2. 电压增益较二级共发电路低。与以Rc2为负载的单级共发放大电路相近。	" 

EncryptionType: 2
UsingVectorGraphics: 0
/000@D0I0?4D<DHI@3078;L=8?@A404D8@4@8GD7L80@030B88HIHC078=4M040542
<@H9@34G4MHE0?D?<B8G0D4K<2@6L<4K0980DE<IDC0B<LHAD3<20=480J@A024:<
98=0?4N<DHADB4F0BDN8FH8H3<@D0<DH>@BD98:<L0BHG<6@<HJ8A@BDEH3@=DILJ
@O89<;<:49HKH@0B008888@B448:L;8H0B0K46D<<0H1D3<5D<8J0I0:48<4@5DI<
7HG@58EL=8G0A044B<50:0L@AHC05L:8I8I@D4;<G4DDNL=H><=4<<48M03H4L<4K
8B@9D288LK0G@24;<2H80<8M82<54E<<HD0@@C46<6LDD64?DC<8H0L=D?8D0J4H4
@D1<C46L><K<50;<2H64OD5<AL9D307@84K0:HI008C@>DCLH<2<G<8DFL7@B454A
<=L;<L084=DA@3<G8O0EHJD2H@HI@2<6L=@N8D82@6<28DH1H3<78><:4K89@E44<
2HDD@LJD88EH9H;4D@:89DKHBH?H0@>L6L@H90C874>0:4C81@1478><4<745LA@;
@6@5L4@>46<2LH4D8>4C8;D?@1L5088CHH09D;DDHO83@@8708DM8;4L<M85L3D64
=0KH2LBH4<LLJ0:LHLF8<4B88HA@K@L8B82L@D=0C4B49068NL9<?DN<HDB@68>@M
0FH>DBH54B<I0<D10C86L=4HH8HI8DD<0LH2H@LL4I0LDEHE@C4084L=@MD8414><
DHA@2074=<>4O8=<K87074=L243<K<@<@4J4>LB4040<4H6LFHM<O8B8<02<0LKHI
DIH90AH:L4H@@14@4HLBL60=@:DB<@0?L$000@80@0I@04983074>@C@J@=40<481
DA038403850J@CHMH28DHID3@20>8>@J0A004488HC42H64=@FH0<0<<H3L10C0C0
@<A<3<6D<DM8K<A@C478EDGD2D6<J<:47L64;@JHOL=4N8;D?8I4D@<LD8DLL<LLL
@=<58<H><<H98IL4HI4G094;DJH:LHLF8@448DLA@C4F8?D=HHHB@C45<2DNHJ898
9DKHB054G<?4FL74>L90L8HHI@K<DHM0A0E4BH<H:<H@J@0<1@3870=8K@F0C47DB
LC<@8LHID3DDL4L686LE4J85H8HKHG0D4I<@4<<@8ML<4288H9@34FHL@3LJ<G<HL
94C0FHDD9018102484L@D@14H<8H4@EHJDB@6@?8L<D@2H6464O@K48<4D1LK@F@@
4A4=<68L@1DC<6L>8=DC83<64O<>0<8C8ND4DJHJ46LK0?<C8AHEHD@5D0L=HIHD8
I8DL94306L>D9<7<7HG840>DM0G@HD14EHFHA@A4I0L89<94544<LL=D@<24K@6L@
D9H386H=@J4:840:8@H9D;42L4L38<<94D<=0ODFD549<604LL4L@@8E@1D;@:@1<
28J08@4HDHI<C<74=49<KL3<FL2<D8J4=40H1D3@40>8H04@N0GDHL=8@4:8DLM@B
0>D30480<4@@HB0@D1DE8G0ED@HG4IH7HMD644HKL:<=DAL340H4HB0:8HH9@28D8
0D141024:H<8<8;03H8L@D@0?L$000@I0B@<4L<4@9@C<6840D@@02044088@0<0D
4080M8<418CD60>@M8I@04B40H0@9@F89428FLFD0<DLM@2<6L>@DHG@E44<<L9@3
450<4L@CH2LCD68>8LHB8:DNHB8MLCH60<<N4A4DH8DB<60<L80I004242<KL0D18
C860><I8KH2L;<AD9@C874>@KH30A4A4B8A8C4C0A0E46H2HDH:@<@48DD482<6D2
DC4A0E4N@LD6D3D1D?4J<0H5H5DA0J4ML58D8L<D@9HK<@<H<A4M4N8<H9H3878=4
KHG0=DB@AHC4HL2@<<0HIDO8H4<42<L<5<5<<4K0J@KD6L78<8L8?@J@L@MDK@:8H
D=DADIL@<O0JH?<D4MD24H840=0:8I8C094880@8@202048<0<8;0C@K83LBD?4D4
=LFH3@6DM<F<I<4H>0<HF8C@F0C01@8LI@>H=HL@H@2@0@4<B<1D?4L8H@941@C@D
0<<@@C4@D5LL03L$000@38500004:81L:0KHI@948<4LID3<6L40J8M0C004080H1
03@68=0NHHDE004B850<04D1@C<78<D80I0J424N<MH8@BL4H=LI0B@<4:<HD=D1D
ID7D<<=@E<44=LK8F@7D?DD8H4;HN8KD4<DDA@C44@8@800@044448@L90F89L;L<
86D@D9H3078>DAL2H2L94C<5L>@L0J0B4:<@@9DC4FHI4=8I02<4L9H<8L0N0282<
B<<8GDC0<42<LH=@N8H4A4M<B8LHI<K0:888FHN0H@4LKL506L>8J8L8G8:89L=H0
4G0F@5<HH<H:0H8I0D4L<D@9HK<@<C0B42<J<2H5<A43060<H5HAD3<6@849HC870
5D888H38:4<8H840?LA@CDH48LOH3048H@I4GH4L0HA@3<7080L0H@1444F@2D2@8
D4HG8B83DBLB<60=DI8JH?4KDD@=D5D1@;<9@<46@M488H@F060:4M<:@0<L8HH9D
9@8D60D8JHH0G8C470OD0<OH04$000@38500004:81L:<M0@@D4:<<L1HA06@40<0
@0L@4H?D?46@L@9D3<G0F@I<;H?8MH@4288H1H3D4L>DK8CH9<9H9@BL6L><J8J09
4N<HH=DD<>@I@7@G43064<0FH<D<<4HDH@8BD60=@M8B@04448L8L9@68N@CH4H=L
I0B@<4:<HD=DADML;4?@M<GDJ0NH10A4@H30ELNH9054<<4H1424208480A030N8H
@A4B<3<48I4KHJ@C8:06H889@30A@K0H0@84<0LIH@84LHL9D6@4<J@00>4H<<D3L
9@3L645488K<;0:8=8D83<K0>47414J<FHA@94ED;<9@9D>0J888A@387080L0I04
42<:D1<64L4J@L06DDD4@J@6@6@2<7@6D1@2LB8K4=@M<HH9D608@68C8B08D>8H0
7L$000@80@0K00<D8@4H8>HND004DA@3@789HM8F@04B40H8@9H9@BL6L><J8J094
N<HH=DD<>@I@00040<8@A@306HK<I8:42<:<H498306H>DI8@0B0D<4<LHMDA45H9
DKHB054H<DHA8K<38C<?<IHK0:H8<KHF@=4?<@@8@8<A@:L?<D@B@64B<@@10A040
408@1@?4L8H@=47428946HM<9<E@DHJ0148<DLMH>4B<64J<MH0L00BL>H@DC@44G
<H4J0207484HL106<<46088I@AD800<0LA03<6<<@D834N4>H60D<9D301@;<OL6D
0<2<>8@HA8A4=H;@HLLL4@9@K<684@FD=H646D<4J880286L><M0I05DK0I8G0D41
<CL<H=0<86DI<I@;400L000@4@<4HJ43@0@509<@H9@F0D@E@306L4498L4@0?L$0
00@80@0M@K40<D8@4H8?@><@0288H1H3D4L>DK8@0900<484HDHI<C<74=4M0D@?4
L<FH:478<HKH50@HA@307080K0I0A4E4<04D1@C<78<D80I0J4:40<8@1DBLAD@<M
44<DH;LB<6L<@I8F0E4L8FH=8LHCH<H;D>814C0<@A444=LK8F@7D90D844HHGD7D
:8I8C094880@8@202048D@L@20946HM8A<1LH<94C0FHDD9D=8KD<8=89@D42<@H9
HKD?D9@0H9LF<KD5L>0=4:L<@5DID@@949<60>0@0G0@4L<4HC8BH=L1LBL8HM<9L
4HN@6@60@@4H?0=8404L1@38K@>@68<@FHBDD<4HDH48=<404HIHL@70?D<<;<8<8
47L9LC@70A4:42<;DKLL0<D10C@D0=010C@D0<<8@<@L01LO00L$000@>@I@0024F
<8L8H1@3@40>0L0G004D8@4082040ND<04D1@C<78<D80I0J4:4N<>H60?DA094>H
=<N8@H9@346H:DK@D@D46<0L8@;8F80@9@F8H@B06L=DK8G@>49<6HK09<GH?<D@B
@64B<@@10A040408@90D444B8=@J@2L3L@HB<60=D9<A<J@G8HDJ@C0884L1@CDG8
O<C01@CH<HG<;LL0J8EH307L80144<@LAHB<78=DIL4D4LDHI<C<G4@D;LK83DB<>
HMD=H10306@K<F8642<:<B4FD2<2<<L>8C@OHF4ED44D0CL449LC@70A414@<GHD4
=<A0C46030>8DH@8440<0LA03<6064=@IH@HG@3D9@G0C0G03H<@88AL94@HI@0@9
L4HHDF44L08F<I0C0840<H@AD3<6@84AH;4I<7D4@C0F4DLID2L78>0M0I054H8DH
9@;<I<@@@H2LC0C0K@M<HL1@C<60<LB<4LHHJHAD94N<<D=@E448;<8@N4946LI8A
DC@F@G0EHA0280@O@0<$000@80@0K00<D8@4H8>HND004DA@3@789HM8F@04B40HH
@A@C@C06H=LLHD@D4B<LHADK<HHM4C004080HA03064=HJ000B4L<8H9DF8@8BD60
=@M8B@04448L8LI@K<2<;DC8G@44:<@H9D2DFL6D6HNLC@F4ED@HG@=4J<NH10A4@
H30ILNH9054<<4H1424208480A05@>L48I48H?DA4JD2@78<4M0J@7D;H;@5@=DGH
J0@48<8L9H246H<DK84HEL449LC@70A4<4H<1<9@9@A8ND<8@H9DC0F<90O4D@O46
8FH2@B45D?@:4K8G0B4B<2HJLBD?8>85<H0DD;DB44D18AL6@>8K@=@HL4H9H90H4
90B8JH5@9HD<F0942H488H@@A4=8>8L0D004L84HO0:45<6@9@AL985D6<G@L8A02
L90D0BH3<6D84A8;804OL$000@D@B@64B<@@10A040408@1@?4L8H@94A@3448806
@:00008D@3HO828E<54>@H8J0E46<0L8@382060=4?LK8=DI0C<6H>0=4BLGD<@?H
:0H8I0D4L<D@9HK<><A4A4M4N8<H9H3878=4KHG0=DB@AHC46LI8<40<0L10C<=DB
80DE@@@<4:<DL1@107478=8@0D0>4F<3@M<24B<80B<6L<@I8F0E4L8FH58NLCHAH
C0D@3<MDE4FHHL9@6@H@?0GHBL389<189H>@L<785H4L<4K8BH64E4>DA<E414983
8H0@46<38H@2@4@6DL0L84HA@38E@A<C0:828=838G814CH38I814@<@H5<1<8LIH
>H=@I@H@2@<@1D<<C42@K8A@=LL@B81478I0ADF<48@844<@J000>4<<4H48><@<A
444<4808H0@F<0<OH04$000@80@0O@J0LH1<3D70>@L@2@<4:<DH1DA040408@90F
4L40D@H10201D2@G8FDG<C4<42<LHI@3@20=480J0H@>D94N<<DI@3<6L<@80I004
042<KLHHADC@F@G05H?D?46@L@9D3<G0F@I<;H682L50<4L@J0>4:8FLA@D@HDDD0
DLDIDC@6@>@J8BHOL8HM4C0?4D<3<74>0@0F0:4H<4H;4H098306H>DI8BH5<3D6D
80H@B0;4?L6HG<><A0942H=0N8@H9@346H:DK@:HMD>H9L:D2L@0A41<>@>LF@7D9
0D844HHGD7D:8I8C094886@=8F4482<D<9H=89814H<94C0FHDD88=8KD<8=89@D4
2<@H9HCDG4?0><4@>4;<7<>0I87H>48<<LI8C<78>8HHB@;DJLLL8DDLA@C@G4>0?
04<I@K02<HDC06H5DC8@@74G<B048>@@4@84HI@C@F8?0CHM@44B<<H1HCD6L8H<8
D8D@<84H4H<8E8AD@D542DC490E4I08@9D8D4H<8E8:@GH20D49D9@H@70K8=@001
H307080K@C0A49@3<6@=H68F<H<842<64D48H:L:8=@88C<EH44D8@4C4F0H024C@
0D1<A03<70>8D8=4<0DHB43H1H;DJLBLI@E03<N01L$000@806@:00008D@3H@HG@
=4J<LHAD;<F8H4;HN8KD4<DDA@C44@8@800@0444<8A01@B4<@D<GHH@E8I43<68<
DK07014J<DH=@CDJL5DDHHH2@78<4M0J@C40<481D10C0F@54ID>HGLH0DD;D64?H
@0288H1H3D4L>DK8CHI<A@C@C06H=LLHD@D4B<>HLLD@J464N<N@<8I0C0840<0@A
H3<6DI418:HH8F0E4;<G8L@M0A0940H5L5HE<L8FHHHNL5HGH6D0@>@:@2<;DGL=0
DHML=4N<@D1H3@78>8A8F054J<JHN8?0L8H@141H5L606414JH@<346H<4IH4H3<C
@G05H=4GHA@5D0D<@A<707HND8HG4B4B<2HJL2D0@4@B40<LH:8A014>H:8@@@4B8
L4BL@89D>0BH487@28H0B4F<CD3<74640DH490@8JH584@4@18E<0404OL$000@D0
@@B48<HL94CD6H40J8@0C0B40<8@0<0D4080M804I8C<74=4M0D@?4L<FH>478<H@
0@004488HA@306@80K@I0:4B<E@<04D1@C<78<D80I0J424N<NH8@BL4H=LI0B@<4
:<HD=DADID7D<L=@E<44=LK8F@7D88D8H4;HN8KD4<DDA@C44@8@800@0444@8@H9
0F89L;L<86D@D9H3078>DAL2H2L94C<5L>@L0J0B4:<@@9DC4FHI4=8I02<4L9H<H
?0A4A494F03HI@F014><2H54C<6@;LHHBH08F88D3@DDAD3<74=4>4;DE42LFL3L;
@K82D<<=L882864<4B0<80<>0L0H0O4L<4HC80@=8JH=L2L9@3L64O4L<D@?@9D54
14646490HDE4B42@DDH<>028DH=D=4B8;8FLC0C8=0H81D24MD<8E02L9L9H74=0L
000>4L<4H@HE0D49D24:4L46H80K8JHH8F0@DKDE0F8G4B88H9HC4G4J8C<N0JDKD
G<D8=800IHK<;0@8DHK430=<D474<D@<2L78<@@0H0A4:<JLC06L=@KHJ@B4A<HLM
D8@NLFDK0L<G<G0KD98;LL0HH<06064BHH0N<HD9@C064>@KH:HC<;@3@@DLD8D=@
9<JDA<F440L03L$000@80M@04J4800410B0?8@0N<<H1HA06@78=0@0B00408<HCL
1D206<I4:H><I8C@9DML@HNHH@H094NH34N<@HIDC<78>83<?8AH8@B<7<=4L@B@O
4B8@H5@GHA<C<6L<@3<0<0L8@202048<0A04@K<L0O4<84HI@3078=LE<GD4L@HA<
3068=8B8EDN8H8J0E85LAL2<68MDA8=0M4H85L<H=L1DH@8@F8B@ID5D4D><E<@4E
0>40<<HI@A864786D9<9@9@HH60C84H4LG8=4<0G0I0B4H<8H1DC0C000>4<H@8B4
<<HH9DI0C4G<50IDE0A4N<70LDK8D84H@<4H@@G42H0HM<<<J@A4F460J@5@O4@44
H48IL2L;H708088C4A0L4F0@8A<346<7LH8H0@<K0LHB0F0C8ID7D><2<0HA<J4H@
D068J@E@8H2<;@O03LN01L$000@80@0N@04IHC<7440J8M0D004H80HA03040<@H0
00K4J<80D4>@0864DLI@K4N@B8?44L3@6DI47H<<KHF0?4:<8L=H8<>4HDMHD@B4:
<LH9<38F8O05H=HKHB0=D1@3@208480A0E044B8=@@<LLA<C460<<M0G@EDNHCHC0
<@C<G@A0=DO8N87044J85H?<I4=@K4286L80MHE0C060;0D84HDH5LJ@5@842<L@5
@640<8@9H;@@@J@18701<B4C<<0<@0D2L60>0D8;<2@J<3428JHEDFDC0;<2LBDCL
?<=0I@@@F0>D<0D8;<0L@HA<3@6D=8NHK08@FH6H98>LA0;0?LF8C014984@1D@<1
4H4@4D@<80HA01LLL74=LH07L$000@80@0M@C4:<LHI@3@20=4>@I000@40<8@IHE
H0H18J<6<@L64=LK0G@E44<FL4440<0B89DMHD@B4:<LH9<38F8O05H=HKHB0=D1@
3@208480A0D044B8=@@<LLA<C460<<M0G@EDNH3H305H>4>4LD8DMLJ@BLHL14BL>
HK49<LH0@LL=D3@8H0<8@A@3040<HFHO4BLM@9D;894@H9@20F8:81@BL30;LB82H
HH6@@H@H>DA<<D9LA@C@70AL:8M<:H889D9@;LE0;44L8H9@305@A@=H;4I0;4>@7
H@<140<CLHD@@68CLH<<824BLC0G0>4O@9H6@@H@H@D<H@HKL=@@828GLH40@6L7H
ML@8341<D<N<K49D1@O00DO@0<$000@HHG@<4N<DHAH3@20=480H000J4800410B0