功放大2.ewb

EWB经典实用列子

Electronics Workbench Circuit File
Version: 5
Charset: ANSI
Description: 
"                                                                    班级              自9739--11" 
"                                                                    作者              寇晓明" 
"                                                                    作品              音频功率放大器" 
"                                                                     简介             它是一种带有静噪及备用选择模式的音频功率放大器.由图可以看出其外围元件极                                                                                               少,这种放大器在输出功率为10W时,其 总谐波失真加噪声 (THD+N)小于0.1%." 

EncryptionType: 2
UsingVectorGraphics: 0
/000@D0I0?4D<DHI@3078403850K0O<0<0@A044=4L@A@E4B<@H1HB868<4I0B@B4M
<AHK8FL4LA43<G89D>42<@HED:@F0K8A@74=4KHG004B40H8@1D306<DD@@BH6L=L
K83014;<74=L=<F@:470<098:LE46@0D=H?49<<<4HID;0M4I8J4NH9@EDGLF@2DL
DL@1D1054408@2@I4>8DD0DA@C0;D60<@J0@0J448<H5<708@J8F8M@H<E<N8E8@H
1<30<<A4088DMHA0O448DDI@3@G8BD;<?8ML6HBL6H4H@8MH>428DH9DK44@>4@@I
D3<F4<D044@DH7HB4F8=80H98C074><:<38J<FL=4>@J0DH0L383D;@G0B0?46<FL
ADF8<D24J<GLN8K0@@H42<@@=D@D5@H0;4NL747@F4;<>@I<2<C4F8O0FH0D3HJ@H
HG0D4A<ML;8=D<4I07@>4H<4H5L98644<<4M8F0D46<2LDDIDB@78<8:4?8;05DL@
M8B@8D58JDL@=DM48L>0>L<<A0D@C40<2LDDI4B0D06<6LB8N<H8I08DN<88286L>
<245@38DLK4HDNL@048L@14K@J@A494NH10L82@E4<LADE<GL>@H@C0?4;L30AH;@
ELELAH<DH<4@AD30G4HD5L5L18B468L<B0<@=H>LGDGH4@88L8B0K@18<H>84@:8:
DO4H<8@786L=0H@H@:8CL3@789HM8F@6D=@HDFHEDOD184@FLL0F4;4K0J@00J4N8
HLA@F8MD2H1868<0H0O@K0:HC42D603<>8F<6460;@6HNLEH1D@<@40<0@9H;L<8J
0G@?@;L1HC0M44D6<2DO<<8G8;@A@C<M0M8@048DLA@C4F8?D=HHHB@8D684<L03L
$000@C8G@44:<0H8@382064=@@0=0D0000@I03@B8G064N<FH5478<8H0=@0@I03L
60LDE<0L306@>0J@G0<4F<;460=4G454=0KHK@>4?848><9LBDM0<8L@AD3<78><M
4=D5L7DNL60144<DH1@;<N8ALM4KDL<4@9@K<:84@0D@@A040>8J8@@<44<28JL=8
9838GD>4:8A<306D>4=DE0L@@4:<2HLLM<3@@HG@<4N<8HEH9D><4<<H3L9H9@F<G
HH@78O80H?<9LI<;06H8DK0B@5DF<@@M@14FL4@>46<@LAHC@G8M4AD584H50<4L@
J0>4;8KL@L4D2<J<LDMDG@D@<<LH=HG4:4F<CD3@70144HDHGH@L887@6@:4L<A44
4L<<H3<70>0L@8@A8G0@0=<0<2LGH50<8<8D<908<4LID3<FL3@1LA@3@6DA<@HAD
C<<@0D5<<4K0J@540<88MHMD=8H01@CH<8D@=H>HE<L8FH;8L<CHC090EDC4OD64=
@6D@D9H3078>DF4C0K@4<DDA@C44@8@:<94989DD86HJ@IDK4@03@6<>0@0G0642<
:<B0608D9@C09@A0KH3H184H:D103<B<D@HDJ@B818O00L$000@I8C094880@@@2@
2048D@I02004D8@4082040><M0I<D<44=LK8H0DD;DNHJ8><1LB@60>8M070E4J<0
H8@38207064;DKHI@948<4LID3<FLADJ8640<0@1@206L=0JH@LAD306HI408:HH8
F0E4:<0H@@3@3D64ML9H>@=4N8@H9@346H:DK@JHJ0K@6<HHFHC8884L1@CDG8FLH
D6DB4I8NH@01474;<L@@@HD2H64<@I@=@I<0HADC<D0<@AL449LC@70B484B<F0>4
1L3H6<=4E<A0I@2L3440@888J41@6<L4680D1D3840=HH@H@:@0@1L:<H@4@54G8D
LID2L70>0M0I0GDBH9@;@2<7@;LKHC064?<JL7DAL94F@04?4DD64JHB4AD6<H<4H
I@K4O0@84HEH9<C85L<<1<34F88D3HLLLDF@>44<4L5D98BL68?09<8D;0C@;D444
8B8C0F0A04<8LAHC<HD1@4L48FDJH9L1@C0ND0L2<2H24;L20F4CDB<60=DI88HK8
3054D<1818B<60<8=<JL40H05@DH6HLD6<546<448<BH@0?L$000@L@J0>4:8DL1D
A06@40<HL@00J4800410B0?8@0N8<H9H3878=4KHG0=DC@AH3440<0@0I0<4D<LH9
L9@045<<4K0J@540<88AHAHC0>L4LG86@?48<DH1@C<58=H=<=0MH34<<;<9DD42<
@H9HKDK<L8C89054<<4H14J4>H80A0A044B8M@J8LH1<3@70>@L@@010K8E0449LC
@70B4642<K<1<ILBL6L<HI@CH=H54HLD@K@G0G@K@DL4HHHG4AD6<H<4HI@;40@OL
6H4HIDBLF4@D10K4H82<DDAD3<74=4:4G8B@H4;<A8H8L8B8M0I<D<44=LK8H0DD;
DNH<8D@20BH8D1@B<?0=8FHB<@<HH9D:0285LB80@N0C094;<8D<@GHI0A@M09484
@DGH14<8BH8<B06<@<9@30I@B02<9@I@@0><2<K0E014;H4HA094K82L=<08C0B06
<849@309@K0@03068<@L000>48<0H9DEH10O00L$000@80@000<44D1@C<78<D80I
0J4640<0@1@2L6DO<7L6@:0?0;<3LC8G@44:<@H9D2D6L=4M0I@04B4NH086424K<
7414J<FHG8D@@02044B8=@6@@D9H3078>DIL2<:L9D98346<94A0DHB82@C88@EDG
H7@38N8DH1D;@K8<D5LC41DB@60>8M070E4J<NHH@<H<8G8G@C4;<:8J8G@>45<MH
A4444<0H1H206H=HJ@4@5<F8?4=L1H@<343<402<J8:H3<>82<ID=88DN0J0@DH<@
@3@8@204L84C07@74D80<IH3<6H<<H8H0HD@@AL6<>LD4BD8<<H9@<D2<K4J@>0>0
;<9@C@J<A02H7H<4249@1<34L<64144<FH>H=DG@F@C0K8@@<HD4HLD830?HH@M4G
0H0I0B4F<@0H0642<;4HLE<2<;@;0B@38H@98C4F8E08HF4282<J<4HA4K<1800DL
M@2<6L>@DHG@E44<<L9@K49D?<:0>@I8I0C49<:HHDM0FL4LI@;0G@7LJ<D894C0F
<@D581H?<J<0D18C860><6L78GH38C46@><M0G@64282<4D2D6<6424:<=D5@9@E4
I00@O@0<$000@80D@04040<8@0<0D4080N8H4A@A@4H<4IH@0B00<484HGH1<2@6@
<4LHB@GD5LDH;8;L;HJ<J4B06L=DL0J808?<I4:8:0H8I0D4L<D@9HK<@<B<A4M4N
8<H9H3878=4KHG0=DB@AH3440=0@0I0B40<<L;4A<842<L<5<5<<4K0J@KD6L78C<
4H0<4LK4DHI43<68<DK0:@>4;<3D><IL584H5H9HFL>828DH=DID900444884@K4=
018CD60>@M8I@HDM<@09430F4FDC<98:HHHA@HD2@B<:8HH9@28D8MH4<2<J<4HA4
K<1800DLM@2<6L>@DHG@E44<<L9@K4ID?<:0>@I8I0C49<:HHDM0G04LI@;02@44=
D68D8B06H2H:490?<I0D@C48<LLADB4C090;@2D2<BDE<<8H8B@A89@N0<0@048?0
M0H8H4C0I@4L84C@0@<4N8L@A0AH6L>0C<0L2L4<>43@D<BLDL3@6L>0NHH4G0141
<F<<8G@8@4@1@CDF0109@A0<<D@3<6@<8H8I4L0B@94@8904DA<8<0@ID6468HD;<
1HHL1DC<@D249DA@LD34GDM<6LJHHH?030<L<0N@NHB0881454<4:4:424<L=@H07
L$000@3850000468@L44=LK8H004I4F<GDN@K@0<4DA@3@789HM8F@04B40HH@A@C
@C06H=LLHD@D4B<LHADK<HHM4C004080H103@6<=8@0I0<42<:<H098306H>DI8@0
B0D<4<LHKDA45H9DKHB054H<DHA8K<38C8?<HHK0:H:<M0@@D4:<NLFHG04H:8I8C
09488F@3D2048<8H02094FH=4N<0D1H3@78>8800@=DK@B04L9HC@H@F0A4MD@DLL
I<3<6<<H9LG04@<8B8=H;@;HM4B<D<4HHHH4AD6<H<4HI@K4O0104LEH9<C85L<<1
<44F8@D5LIHO<=4L<8H9H;8B@5H<DN0BHD8F070?<ND@D@HC0L424J4ADC0MDL@D0
>42<B@8@=@14K@H@9000ALC4F@:D8@LHA<I@A0CH2@:@M0C<00@L9@B06<44AH2H6
44HH@B05L8@I@A0D4=DG@34=@J@E@1L3@74=@@8B83484@D9L<8I0C0K42H1HC<N<
5<L03L$000@2@@000E40L5<<4K0J@540<88AHAH3040<0@0=090G<6@?48<DH1@C<
58=HJ8J0C40<485DGHJD2@78<4M0J@GD5DEHA4B@68<HB820=D0L@@A0449LC@70A
4:48<4@K418ALC4F@:D8@LHA<1@2084M<4L4LJ4E05LAL@HG@=40<BL>HK49<<H0@
4DA@3@789HM8F@7DD@347464=DKHI@5D94=4KHG0KD8D6<NL8H1@346@=8@0I0<42
<:<247@9@94K8F@DLID2L70>0M0I0ADFD<<4@3468F4GDN0?@?4<<HHM@M4MH:89@
J81DI05<AD>8J@H@70G0>4<HK0@@74A<L0L<HHD@O468FH204<;<O0D8F@>44<4L5
D98BL68?09<;4;0;@B8:0246D1@<8A8K42<@<0H1H2070<HJ@8@2HB<A<C0F0A09<
4H885<4L<4K8B@ADD@6498@LAL?@9464:<M<2D5DE0L4604D0L24H@94204H9LAHM
0@0N<@HIDC060>064L44<C01D@HIDC03DL<><H8=@64L4DL40D8@D:L;00@N<88:0
@L4@1@@D103<L0@@0D9HL4K@106L=HK08@6D48L03L$000@<0@0=0D0000@907D6@
?48<DH1@C<58=HJ8J0C40<48ADAH304064EDDHJ0148<DLMH=D>49DD@B@64B<@@=
07<408@H02094G<N@LDJ4B06L=DL0J85H?<I4;@D0@@B48<HL94CDFHDL@D2<J<LD
IDK@F8BHLHADK<OD6@N<80<8H@D0;4GL=DI0B094BHF028@H9DCD6840L@L8KD1@D
86HC414@<9DI<?@64G<G49D<0I@E0A4=@2<2L64<4F45DHHG0=HLD4@9@C<F8>458
L4:030ED6L4@4HC814A8L0D41<@L7474A0409H@860?4>88@0LC@6L=@HH@@@4A<1
43LH4>@60=DG8C030GL2<DHHLFD@D@L8LA02H?H<4249@1@847DK0@@3@;<L@@@A4
>0>8FH<D@<HH9D:048C0449LC@70A4442<<<207@<HJ8:H24C45L68800@0D3<M04
@4<<LODJ@G0A4AH3<4004OL$000@38500004:81L9DKHB054H<DHA8C<6@>@LH@09
0D<4<0H103040A4:H:<M0@@D4:<NLFHG04H:8I8C09488F@3D2048<0A0D@;DO8N8
=0I0C<6H>0=4BLGD<@5H:0H8I0D4L<D@9HK<J<I8A4M4N8<H=H;49<N<HHMD?HC8?
44064<8L@=@5<0LAHC<<@0D5<<4K0J@540<885HKHHD:0F@HLB04L9HC@BH:LH8HH
7D?0I@D@ED4868;L<@@010186H<H@0G434K<G014<8DH4@MDA@6D0D9H>0648D9@B
06<8D9HN060H<9@G0100L8HID>06DDH4@?0C0B8F@=<9LC<5L>0L0J0B43<A<4<>4
?0H<N0?@?4<<HHM@M4MH:H9@J81DI0I<AD<0L0H@70G404<HK0@@74A<L0LLHHD@O
468FHL044;<?0D<F@>44<FLAH04OL$000@L@@0@004D8@4082040NDJ0LH9<347@>
@L@@@04B4BHM@J8BL8L8<KHF@@49<G<M@4D><@4288H1H3D4L>DK8CH9<9H9@BL6L
><J8J094N<HH=DD<>@I@7@G43068<HFH>D0<HL9DF8@8BD60=@M8B@04448L8L9@C
@6LC8G@44:<@H9D2DFL6D6HNLC@F4EDDHJ0148<DLIH;@C@K<?<D@B@64B<@@=07<
408@1@?4L8H@141HB4<@4L7@<HJ8:H14C45L68800@EDALC@8@<<2060841@C<=DK
4D014;H4HE014@<14<0@8A814<0L00@6L2<J00@8L2<I@A014=H4HC0143H4HC014
2L:LL@E0;4L0H0H@:@@@EH3404OL$000@80@0N@8498346<94A0FH0<88@@1D2440
3850B@4H40K8?@@40<@LAH3@20843<6DL@A42<4L68F4EDN0?@?4<<HH1@A06@40<
8H0I0042<JL50EL6@H8B44<4LEHAL346H<4IHI@GD5LFH;8C85L<<KHG0440<885H
983<6L>8J8D8>@54@<FL2@@DHD4DJ4BL8L8<KHF@@49<G<M@4D><@4288H1H3D4L>
DK8CH5<HH><:0KHI@948<4L=DC4=DB@AHC44L;L70L0=@1<0LAHC<<@0D5<<4K0J@
54;<?8>@H@H@?4D<I43<68<DK0:@>4;<L<;<34KL=818CD60>@M84830B0A8308D1
8?0I@D@ED2868;L<@8HN@D@D0@8@414<8@8C<14<8@8D814>8J0=@LL4HA0;41L4H
1@JHC<1474M<ID@@I40@6D=8@0H0042<:<207@9@90K82<04;02<HH0DO@0<$000@
80@000J4LH1<CH5L=LI@C004B40H8@AH3860806@:0?09<3L3<BL:LO8K@I0B42<J
LHL1@C<60<LLHKH2L;<5DIDBL64=LK@B004442LDDAD3<74=4:4G8B@H48<8L9H;0
;@28?D>D5@C<5<=4L@B@C45<GDNHJ838>LML98LL8@K<3H70=LNLCH1HC84L4LF<4
L0HA0C0<@E<74<DL<5@3D6H80L0=@>@C<1DD4C46<HHO88D@DIDC<78>8N4BH9LI0
8DA85@GHA<C<6L<@3<0<0L8@202048<8H020A4<0<L?0;D4L><OLJL50D8M<3<KH1
03@6<L<A@C820>H:D9HA0G474F8A8242<2LD<G014<LM@38JL9LL<EDIDA@2DD4M@
90E0I4E@<H?@6D2<J42468L<A0C4L0M<J8688D0<4HF89<A<J49D9@;L:0>@I4ID?