proiectare asistata de calculator - amplificator audio

7/28/2019 Proiectare Asistata de Calculator - Amplificator Audio

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Cuprins

1. Schema electric a amplificatorului audio..................................2

2. Proiectarea unui amplificator audio (cu minim 2 tranzistoare imaxim 10 tranzistoare) relaii de calcul privind proiectarea

precum i date tehnice specifice amplificatorului (tensiuneminim/maxim de intrare, banda de frecvene, tensiune maximde ieire, putere de ieire la 1kHz, impedan de intrare, impedande ieire, amplificare, gam de temperaturi de funcionare, tensiunide alimentare). Elemente............................................................3

3. Program surs n SPICE.....44. Analiza n curent continuu a componentelor amplificatorului

proiectat (.DC) determinarea caracteristicii de ieire pentru toatetranzistoarele din schema amplificatorului (IC=f(UCE)65. Analiza n curent alternativ a amplificatorului, determinarea

caracteristicii amplificare-frecven (.AC).................................86. Analiza n domeniul timp (.TRAN) rspunsul n domeniul timp

al amplificatorului pentru semnal de intrare sinusoidal cu frecvenade 1kHz i amplitudinea n limitele acceptate de amplificator(conform datelor tehnice de la punctul 1).................................11

7. Analiza de zgomot (.NOISE)....................................................138. Analiza de sensibilitate (.SENS)...............................................15

9. Funcia de transfer (.TF)...........................................................2210.Analiza parametric (.PARAM)...............................................2211.Analiza de temperatur (.TEMP) utilizarea coeficienilor de

temperatur pentru rezistoarele utilizate n schemaamplificatorului........................................................................23

12.Analiza Fourier (.FOUR) prezentarea datelor att n mod text cti n mod graphic......................................................................27

13.Utilizarea subcircuitelor (.SUBCKT) nlocuirea tranzistoarelordin schema amplificatorului cu modelul acestora cu parametri

hibrizi.......................................................................................2914.Proiectarea unei surse de curent continuu (minim componentele deredresare, stabilizare i filtrare) simularea funcionrii sursei decc pentru alimentarea de la sursa de 220V i obinerea tensiunilor

prevzute la punctul 1)...........................................................3015.Concluzii (cel puin o concluzie pentru fiecare punct al

proiectului)..............................................................................31

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16.Bibliografie.32

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V1=20mV/1kHzV2= 9V C1=1000uFR1= 100 C2=0.01uF

R2=47k C3=0.47uFR3= 390k C4=0.47uFR4= 47k C5=0.01uFR5= 390k C6=0.47uFR6= 27k R10=8R7= 1kR8= 390kR9= 22k

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2. Proiectarea unui amplificator audio (cu minim 2tranzistoare i maxim 10 tranzistoare) relaii de calculprivind proiectarea precum i date tehnice specificeamplificatorului (tensiune minim/maxim de intrare,

banda de frecvene, tensiune maxim de ieire, putere deieire la 1kHz, impedan de intrare, impedan de ieire,amplificare, gam de temperaturi de funcionare, tensiunide alimentare).

Tensiune minim de intrare: 5mV

Tensiune maxim de intrare:55mV Banda de frecvene: 5Hz-30.000Hz Tensiune maxim de ieire:400mV Putere de ieire la 1kHz: P=5W Impedan de intrare: Zi=1M Impedan de ieire: Ze=3.40 M Amplificare: Au=6 Gama de temperatur de funcionare: -47C150C Tensiune de alimentare: 9V

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3. Program Spice:

Proiect

V2 7 0 DC 9V1 16 0 AC 1 0 SIN(0 28.2843 1 0 0 0)R3 3 2 390KR1 1 7 100R5 5 6 390KR8 9 12 390KR9 13 7 2.2KR7 0 10 1KR10 17 0 8

R2 2 1 4.7KR4 6 7 4.7KR6 8 9 27KC1 0 1 1mC7 12 17 470uC3 16 3 470nC4 2 5 470nC2 2 1 10nC5 6 7 10nC6 6 8 470n

D1 13 14 D_national_1N914D2 14 11 D_national_1N4148Q1 2 3 0 Qn2n3xxx_2N3904Q2 6 5 0 Qn2n3xxx_2N3904Q3 11 9 10 Qn2n3xxx_2N3904Q4 7 13 12 Qn2n3xxx_2N3904Q5 0 11 12 Qpmisc_2N3906

.MODEL D_national_1N914 D(Is=10f Rs=0 Cjo=0 Vj=1 Tt=0 M=500m

BV=1e+30 N=1+EG=1.11 XTI=3 KF=0 AF=1 FC=500m IBV=1m TNOM=27)

.MODEL D_national_1N4148 D(Is=10f Rs=0 Cjo=0 Vj=1 Tt=0 M=500mBV=1e+30 N=1+EG=1.11 XTI=3 KF=0 AF=1 FC=500m IBV=1m TNOM=27)

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.MODEL Qn2n3xxx_2N3904 NPN(Is=7.62e-16 BF=204 BR=4 Rb=2.1Re=525m Rc=210m+Cjs=0 Cje=4.85p Cjc=5.28p Vje=750m Vjc=750m Tf=318p Tr=44.6nmje=333m+mjc=333m VA=113 ISE=308f IKF=70m Ne=2 NF=1 NR=1 VAR=1e+30IKR=1e+30 ISC=0+NC=2 IRB=1e+30 RBM=0 XTF=0 VTF=1e+30 ITF=0 PTF=0 XCJC=1VJS=750m MJS=0+XTB=0 EG=1.11 XTI=3 KF=0 AF=1 FC=500m TNOM=27)

.MODEL Qpmisc_2N3906 PNP(Is=1.39f BF=180 BR=5.1 Rb=10 Re=0Rc=2.8 Cjs=0+Cje=8.2p Cjc=9.5p Vje=750m Vjc=750m Tf=178.5p Tr=32.3p mje=400mmjc=543m

+VA=20 ISE=0 IKF=1e+30 Ne=1.5 NF=1 NR=1 VAR=1e+30 IKR=1e+30ISC=0 NC=2+IRB=1e+30 RBM=0 XTF=0 VTF=1e+30 ITF=0 PTF=0 XCJC=1VJS=750m MJS=0 XTB=0+EG=1.11 XTI=3 KF=0 AF=1 FC=500m TNOM=27)

.END

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4. Analiza n curent continuu a componenteloramplificatorului proiectat (.DC) determinareacaracteristicii de ieire pentru toate tranzistoarele dinschema amplificatorului (IC=f(UCE)).

.DC - calculeaz punctul static de funcionare al circuitului (n curentcontinuu).

.DC V1 0.6 0.05

**** Diode MODEL PARAMETERS

D_national_1N914

T_Measured 27T_Current 27

IS 10.000000E-15BV :00.000000E+27IBV 1.000000E-03

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D_national_1N4148T_Measured 27T_Current 27

IS 10.000000E-15BV :00.000000E+27IBV 1.000000E-03

**** BJT MODEL PARAMETERS

Qn2n3xxx_2N3904 Qpmisc_2N3906NPN PNP

T_Measured 27 27T_Current 27 27

IS 762.000000E-18 1.390000E-15BF 204 180

NF 1 1VAF 113 20IKF .07 :00.000000E+27ISE 308.000000E-15NE 2BR 4 5.1

NR 1 1

VAR :00.000000E+27 :00.000000E+27IKR :00.000000E+27 :00.000000E+27RB 2.1 10IRB :00.000000E+27 :00.000000E+27RE .525RC .21 2.8CJE 4.850000E-12 8.200000E-12MJE .333 .4CJC 5.280000E-12 9.500000E-12MJC .333 .543

TF 318.000000E-12 178.500000E-12VTF :00.000000E+27 :00.000000E+27TR 44.600000E-09 32.300000E-12CN 2.42 2.2D .87 .52

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5. Analiza n curent alternativ a amplificatorului,determinarea caracteristicii amplificare-frecven (.AC).

.AC- Folosirea instruciunii determin efectuarea analizei de semnal mic nregim alternativ, relativ la punctul de funcionare calculat, n gama defrecvene specificata (5Hz-30.000Hz). Pentru ca analiza s fie executattrebuie ca cel putin o surs independent s aib specificat valoarea nregim alternativ.

.AC LIN 300 5 1kHz

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**** Diode MODEL PARAMETERS


IS 10.000000E-15BV :00.000000E+27IBV 1.000000E-03


IS 10.000000E-15

BV :00.000000E+27IBV 1.000000E-03

**** BJT MODEL PARAMETERS

Qn2n3xxx_2N3904 Qpmisc_2N3906NPN PNP

T_Measured 27 27T_Current 27 27

IS 762.000000E-18 1.390000E-15BF 204 180NF 1 1VAF 113 20IKF .07 :00.000000E+27ISE 308.000000E-15NE 2BR 4 5.1

NR 1 1VAR :00.000000E+27 :00.000000E+27

IKR :00.000000E+27 :00.000000E+27RB 2.1 10IRB :00.000000E+27 :00.000000E+27RE .525RC .21 2.8CJE 4.850000E-12 8.200000E-12MJE .333 .4

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CJC 5.280000E-12 9.500000E-12MJC .333 .543TF 318.000000E-12 178.500000E-12VTF :00.000000E+27 :00.000000E+27TR 44.600000E-09 32.300000E-12CN 2.42 2.2D .87 .52

**** SMALL SIGNAL BIAS SOLUTION TEMPERATURE =27.000 DEG C

NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE

NODE VOLTAGE

( 1) 8.8786 ( 2) 3.1751 ( 3) .7271 ( 5) .7275

( 6) 3.2109 ( 7) 9.0000 ( 8) 2.1909 ( 9) 2.1909

( 10) 1.4588 ( 11) 4.4773 ( 12) 5.1314 ( 13) 5.8068

( 14) 5.1420 ( 16) 0.0000 ( 17) 0.0000

VOLTAGE SOURCE CURRENTSNAME CURRENT

V2 -4.067E-03V1 0.000E+00

TOTAL POWER DISSIPATION 3.66E-02 WATTS

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6. Analiza n domeniul timp (.TRAN) rspunsul ndomeniul timp al amplificatorului pentru semnal deintrare sinusoidal cu frecvena de 1KHz i amplitudinean limitele acceptate de amplificator (conform datelor

tehnice de la punctul 1).

.TRAN- Instrucinea este folosit pentru analiza n regim tranzitoriu acircuitului dat, respectiv pentru determinarea rspunsului acestuia ndomeniul timp.

.TRAN 1US 10MS

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**** INITIAL TRANSIENT SOLUTION TEMPERATURE =27.000 DEG C

NODE VOLTAGE NODE VOLTAGE NODE VOLTAGENODE VOLTAGE

( 1) 8.8786 ( 2) 3.1751 ( 3) .7271 ( 5) .7275

( 6) 3.2109 ( 7) 9.0000 ( 8) 2.1909 ( 9) 2.1909

( 10) 1.4588 ( 11) 4.4773 ( 12) 5.1314 ( 13) 5.8068

( 14) 5.1420 ( 16) 0.0000 ( 17) 0.0000

VOLTAGE SOURCE CURRENTS

NAME CURRENTV2 -4.067E-03V1 0.000E+00


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7. Analiza de zgomot (.NOISE)

.NOISE- Prin intermediul acestei instruciuni se calculeaz zgomotulechivalent la intrarea i iesirea mentionat. Instructiunea actioneaz doar

dac se specific i efectuarea analizei de semnal mic, n regim alternativ,printr-o instructiune .AC.

.NOISE V(17,0) V2

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( 1) 8.8786 ( 2) 3.1751 ( 3) .7271 ( 5) .7275

( 6) 3.2109 ( 7) 9.0000 ( 8) 2.1909 ( 9) 2.1909

( 10) 1.4588 ( 11) 4.4773 ( 12) 5.1314 ( 13) 5.8068

( 14) 5.1420 ( 16) 0.0000 ( 17) 0.0000


V2 -4.067E-03V1 0.000E+00




( 1) 8.8786 ( 2) 3.1751 ( 3) .7271 ( 5) .7275

( 6) 3.2109 ( 7) 9.0000 ( 8) 2.1909 ( 9) 2.1909

( 10) 1.4588 ( 11) 4.4773 ( 12) 5.1314 ( 13) 5.8068

( 14) 5.1420 ( 16) 0.0000 ( 17) 0.0000

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V2 -4.067E-03V1 0.000E+00


8. Analiza de sensibilitate (.SENS)

.SENS- Folosirea acestei instruciuni determin calculul sensibilitilor de

semnal mic, n regim continuu, pentru variabila de ieire specificat, nraport cu fiecare parametru de circuit.

.SENS V(17,0)

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DC SENSITIVITIES OF OUTPUT V(17)

ELEMENT ELEMENT ELEMENT NORMALIZEDNAME VALUE SENSITIVITY SENSITIVITY

(VOLTS/UNIT) (VOLTS/PERCENT)

R3 3.900E+05 0.000E+00 0.000E+00R1 1.000E+02 0.000E+00 0.000E+00R5 3.900E+05 0.000E+00 0.000E+00R8 3.900E+05 0.000E+00 0.000E+00R9 2.200E+03 0.000E+00 0.000E+00R7 1.000E+03 0.000E+00 0.000E+00R10 8.000E+00 0.000E+00 0.000E+00R2 4.700E+03 0.000E+00 0.000E+00

R4 4.700E+03 0.000E+00 0.000E+00R6 2.700E+04 0.000E+00 0.000E+00V2 9.000E+00 0.000E+00 0.000E+00V1 0.000E+00 0.000E+00 0.000E+00

D1SERIES RESISTANCE

RS 0.000E+00 0.000E+00 0.000E+00INTRINSIC PARAMETERS

IS 1.000E-14 0.000E+00 0.000E+00

N 1.000E+00 0.000E+00 0.000E+00D2SERIES RESISTANCE


IS 1.000E-14 0.000E+00 0.000E+00N 1.000E+00 0.000E+00 0.000E+00

Q1RB 2.100E+00 0.000E+00 0.000E+00RC 2.100E-01 0.000E+00 0.000E+00

RE 5.250E-01 0.000E+00 0.000E+00BF 2.040E+02 0.000E+00 0.000E+00ISE 3.080E-13 0.000E+00 0.000E+00BR 4.000E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00IS 7.620E-16 0.000E+00 0.000E+00NE 2.000E+00 0.000E+00 0.000E+00

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NC 2.000E+00 0.000E+00 0.000E+00IKF 7.000E-02 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00VAF 1.130E+02 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

Q2RB 2.100E+00 0.000E+00 0.000E+00RC 2.100E-01 0.000E+00 0.000E+00RE 5.250E-01 0.000E+00 0.000E+00BF 2.040E+02 0.000E+00 0.000E+00ISE 3.080E-13 0.000E+00 0.000E+00BR 4.000E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00IS 7.620E-16 0.000E+00 0.000E+00

NE 2.000E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00IKF 7.000E-02 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00VAF 1.130E+02 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

Q3RB 2.100E+00 0.000E+00 0.000E+00RC 2.100E-01 0.000E+00 0.000E+00

RE 5.250E-01 0.000E+00 0.000E+00BF 2.040E+02 0.000E+00 0.000E+00ISE 3.080E-13 0.000E+00 0.000E+00BR 4.000E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00IS 7.620E-16 0.000E+00 0.000E+00NE 2.000E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00IKF 7.000E-02 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00

VAF 1.130E+02 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

Q4RB 2.100E+00 0.000E+00 0.000E+00RC 2.100E-01 0.000E+00 0.000E+00RE 5.250E-01 0.000E+00 0.000E+00BF 2.040E+02 0.000E+00 0.000E+00

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ISE 3.080E-13 0.000E+00 0.000E+00BR 4.000E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00IS 7.620E-16 0.000E+00 0.000E+00NE 2.000E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00IKF 7.000E-02 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00VAF 1.130E+02 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

Q5RB 1.000E+01 0.000E+00 0.000E+00RC 2.800E+00 0.000E+00 0.000E+00RE 0.000E+00 0.000E+00 0.000E+00

BF 1.800E+02 0.000E+00 0.000E+00ISE 0.000E+00 0.000E+00 0.000E+00BR 5.100E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00IS 1.390E-15 0.000E+00 0.000E+00NE 1.500E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00IKF 1.000E+30 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00

VAF 2.000E+01 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

DC SENSITIVITIES OF OUTPUT V(0)

ELEMENT ELEMENT ELEMENT NORMALIZEDNAME VALUE SENSITIVITY SENSITIVITY

(VOLTS/UNIT) (VOLTS/PERCENT)

R3 3.900E+05 0.000E+00 0.000E+00R1 1.000E+02 0.000E+00 0.000E+00R5 3.900E+05 0.000E+00 0.000E+00R8 3.900E+05 0.000E+00 0.000E+00R9 2.200E+03 0.000E+00 0.000E+00R7 1.000E+03 0.000E+00 0.000E+00R10 8.000E+00 0.000E+00 0.000E+00

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R2 4.700E+03 0.000E+00 0.000E+00R4 4.700E+03 0.000E+00 0.000E+00R6 2.700E+04 0.000E+00 0.000E+00V2 9.000E+00 0.000E+00 0.000E+00V1 0.000E+00 0.000E+00 0.000E+00

D1SERIES RESISTANCE


IS 1.000E-14 0.000E+00 0.000E+00N 1.000E+00 0.000E+00 0.000E+00

D2SERIES RESISTANCE

RS 0.000E+00 0.000E+00 0.000E+00

INTRINSIC PARAMETERSIS 1.000E-14 0.000E+00 0.000E+00N 1.000E+00 0.000E+00 0.000E+00

Q1RB 2.100E+00 0.000E+00 0.000E+00RC 2.100E-01 0.000E+00 0.000E+00RE 5.250E-01 0.000E+00 0.000E+00BF 2.040E+02 0.000E+00 0.000E+00ISE 3.080E-13 0.000E+00 0.000E+00

BR 4.000E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00IS 7.620E-16 0.000E+00 0.000E+00NE 2.000E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00IKF 7.000E-02 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00VAF 1.130E+02 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

Q2

RB 2.100E+00 0.000E+00 0.000E+00RC 2.100E-01 0.000E+00 0.000E+00RE 5.250E-01 0.000E+00 0.000E+00BF 2.040E+02 0.000E+00 0.000E+00ISE 3.080E-13 0.000E+00 0.000E+00BR 4.000E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00

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IS 7.620E-16 0.000E+00 0.000E+00NE 2.000E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00IKF 7.000E-02 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00VAF 1.130E+02 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

Q3RB 2.100E+00 0.000E+00 0.000E+00RC 2.100E-01 0.000E+00 0.000E+00RE 5.250E-01 0.000E+00 0.000E+00BF 2.040E+02 0.000E+00 0.000E+00ISE 3.080E-13 0.000E+00 0.000E+00BR 4.000E+00 0.000E+00 0.000E+00

ISC 0.000E+00 0.000E+00 0.000E+00IS 7.620E-16 0.000E+00 0.000E+00NE 2.000E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00IKF 7.000E-02 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00VAF 1.130E+02 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

Q4

RB 2.100E+00 0.000E+00 0.000E+00RC 2.100E-01 0.000E+00 0.000E+00RE 5.250E-01 0.000E+00 0.000E+00BF 2.040E+02 0.000E+00 0.000E+00ISE 3.080E-13 0.000E+00 0.000E+00BR 4.000E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00IS 7.620E-16 0.000E+00 0.000E+00NE 2.000E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00

IKF 7.000E-02 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00VAF 1.130E+02 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00

Q5RB 1.000E+01 0.000E+00 0.000E+00RC 2.800E+00 0.000E+00 0.000E+00

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RE 0.000E+00 0.000E+00 0.000E+00BF 1.800E+02 0.000E+00 0.000E+00ISE 0.000E+00 0.000E+00 0.000E+00BR 5.100E+00 0.000E+00 0.000E+00ISC 0.000E+00 0.000E+00 0.000E+00IS 1.390E-15 0.000E+00 0.000E+00NE 1.500E+00 0.000E+00 0.000E+00NC 2.000E+00 0.000E+00 0.000E+00IKF 1.000E+30 0.000E+00 0.000E+00IKR 1.000E+30 0.000E+00 0.000E+00VAF 2.000E+01 0.000E+00 0.000E+00VAR 1.000E+30 0.000E+00 0.000E+00



( 1) 8.8786 ( 2) 3.1751 ( 3) .7271 ( 5) .7275

( 6) 3.2109 ( 7) 9.0000 ( 8) 2.1909 ( 9) 2.1909( 10) 1.4588 ( 11) 4.4773 ( 12) 5.1314 ( 13) 5.8068

( 14) 5.1420 ( 16) 0.0000 ( 17) 0.0000


NAME CURRENT

V2 -4.067E-03V1 0.000E+00


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9. Funcia de transfer (.TF)

.TF- Includerea acestei instruciuni determin calculul valorii funciei detransfer, la semnal mic, n punctele statice de funcionare (variabila de

ieire/variabila de intrare), rezistenta de intrare si cea de ieire, n raport cunodurile specificate, fa de mas.

.TF V(R10) V1

**** SMALL-SIGNAL CHARACTERISTICS

V(R10)/V1 = 5.133E-18

INPUT RESISTANCE AT V1 = 3.900E+05

OUTPUT RESISTANCE AT V(R10) = 5.504E+00

10.Analiza parametric (.PARAM)

.PARAM- < = >* *= - parametrului i se atribuie

valoarea.={expr} - parametrului i se atribuie expresia {expr}.Referirea la valoarea unui parametru global se face utiliznd

acoladele { }

.Param R10=6

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11. Analiza de temperatur (.TEMP) utilizareacoeficienilor de temperatur pentru rezistoarele utilizaten schema amplificatorului.

.TEMP- Instruciunea menioneaz temperaturile la care se simuleazfuncionarea circuitului. Temperaturile se dau n grade Celsius, fiindignorate cele mai mici dect -223 C.

.TEMP -40 75

**** TEMPERATURE-ADJUSTED VALUES TEMPERATURE =-40.000 DEG C

**** DIODE MODEL PARAMETERSNAME IS VJ CJO RS IKF BVD_national_1N914 (T_Current -40 T_Measured 27)

2.064E-20 1.057E+00 0.000E+00 0.000E+000.000E+00 :.000E+29D_national_1N4148 (T_Current -40 T_Measured 27)

2.064E-20 1.057E+00 0.000E+00 0.000E+000.000E+00 :.000E+29

**** BJT MODEL PARAMETERSNAME BF ISE VJE CJE RE RB

BR ISC VJC CJC RC RBMIS ISS VJS CJS GAMMA RCOVO

Qn2n3xxx_2N3904 (T_Current -40 T_Measured 27)2.040E+02 4.425E-16 8.632E-01 4.563E-12 5.250E-01

2.100E+004.000E+00 0.000E+00 8.632E-01 4.968E-12 2.100E-012.100E+00

1.573E-21 0.000E+00 8.632E-01 0.000E+00 1.000E-110.000E+00

1.000E+01Qpmisc_2N3906 (T_Current -40 T_Measured 27)

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1.800E+02 0.000E+00 8.632E-01 7.617E-12 0.000E+001.000E+01

5.100E+00 0.000E+00 8.632E-01 8.583E-12 2.800E+001.000E+01

2.870E-21 0.000E+00 8.632E-01 0.000E+00 1.000E-110.000E+00

1.000E+01

**** SMALL SIGNAL BIAS SOLUTION TEMPERATURE =-40.000 DEG C


( 1) 90.02E-06 ( 2) 90.25E-06 ( 3) 2.314E-12 ( 5) 90.48E-06

( 6) 9.0000 ( 7) 9.0000 ( 8) 9.0000 ( 9) 1.6763

( 10) .8388 ( 11) .8514 ( 12) 1.3317 ( 13) 2.3725

( 14) 1.6119 ( 16) 0.0000 ( 17) 1.3301


NAME CURRENT

V2 -2.571E-01V1 2.314E-10

TOTAL POWER DISSIPATION 2.31E+00 WATTS

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**** TEMPERATURE-ADJUSTED VALUES TEMPERATURE =100.000 DEG C

**** DIODE MODEL PARAMETERSNAME IS VJ CJO RS IKF BVD_national_1N914 (T_Current 100 T_Measured 27)

8.509E-11 9.299E-01 0.000E+00 0.000E+000.000E+00 :.000E+29D_national_1N4148 (T_Current 100 T_Measured 27)

8.509E-11 9.299E-01 0.000E+00 0.000E+000.000E+00 :.000E+29

**** BJT MODEL PARAMETERSNAME BF ISE VJE CJE RE RB

BR ISC VJC CJC RC RBMIS ISS VJS CJS GAMMA RCOVO

Qn2n3xxx_2N3904 (T_Current 100 T_Measured 27)2.040E+02 2.841E-11 6.191E-01 5.179E-12 5.250E-01

2.100E+00

4.000E+00 0.000E+00 6.191E-01 5.638E-12 2.100E-012.100E+006.484E-12 0.000E+00 6.191E-01 0.000E+00 1.000E-11

0.000E+001.000E+01

Qpmisc_2N3906 (T_Current 100 T_Measured 27)1.800E+02 0.000E+00 6.191E-01 8.868E-12 0.000E+00

1.000E+015.100E+00 0.000E+00 6.191E-01 1.055E-11 2.800E+00

1.000E+01

1.183E-11 0.000E+00 6.191E-01 0.000E+00 1.000E-110.000E+00

1.000E+01


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( 1) 90.02E-06 ( 2) 90.25E-06 ( 3) 2.314E-12 ( 5) 90.48E-06

( 6) 9.0000 ( 7) 9.0000 ( 8) 9.0000 ( 9) 1.7387

( 10) 1.1066 ( 11) 1.1313 ( 12) 1.2751 ( 13) 2.1669

( 14) 1.6491 ( 16) 0.0000 ( 17) 1.2735


V2 -2.503E-01V1 2.314E-10

TOTAL POWER DISSIPATION 2.25E+00 WATTS

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12. Analiza Fourier (.FOUR) prezentarea datelor attn mod text ct i n mod grafic.

.FOUR- realizeaz o analiz Fourier, ca parte a analizei n regim tranzitoriu,la o frecven fundamental, pentru variabilele de ieire specificate. Suntcalculate primele nou componente precum i componenta de curentcontinuu.

. FOUR 1kHz V(R10)

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**** FOURIER ANALYSIS TEMPERATURE = 27.000DEG C

FOURIER COMPONENTS OF TRANSIENT RESPONSE V(R10)

DC COMPONENT = -2.558544E-01

HARMONIC FREQUENCY FOURIER NORMALIZED PHASENORMALIZED

NO (HZ) COMPONENT COMPONENT (DEG) PHASE(DEG)

1 1.000E+03 1.008E+00 1.000E+00 1.767E+02 0.000E+002 2.000E+03 4.025E-01 3.993E-01 -1.006E+02 -4.539E+023 3.000E+03 1.193E-01 1.183E-01 1.677E+02 -3.623E+024 4.000E+03 2.686E-01 2.665E-01 -1.098E+02 -8.164E+025 5.000E+03 1.001E-01 9.931E-02 -2.384E+01 -9.072E+026 6.000E+03 1.078E-01 1.070E-01 -1.216E+02 -1.182E+037 7.000E+03 1.421E-01 1.410E-01 -3.390E+01 -1.271E+038 8.000E+03 2.235E-02 2.218E-02 7.155E+01 -1.342E+03

9 9.000E+03 9.153E-02 9.080E-02 -4.716E+01 -1.637E+03

TOTAL HARMONIC DISTORTION = 5.425675E+01 PERCENT

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13. Utilizarea subcircuitelor (.SUBCKT) nlocuireatranzistoarelor din schema amplificatorului cu modelulacestora cu parametri hibrizi.

.SUBCKT- Definete un subcircuit n SPICE, care ulterior poate fi apelatntr-un mod similar cu cel al elementelor de circuit.

.SUBCKT HIBRID b e cH11 b 1 8H12 1 e 4.1H21 e c 100H22 c e 20.ENDS HIBRID

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14. Proiectarea unei surse de curent continuu (minimcomponentele de redresare, stabilizare i filtrare) simularea funcionrii sursei de cc pentru alimentarea dela sursa de 220V i obinerea tensiunilor prevzute la

punctul 1).

Se utilizeaz un transformator pentru reducerea tensiunii reelei de

alimentare la o valoare convenabil.Redresorul utilizat pentru transformarea tensiunii alternative generate

de transformator ntr-o tensiune continuu este unul clasic de tip "punte".Condensatorul conectat la ieirea redresorului are rolul de a "netezii"

tensiunea obinut din redresor.Stabilizatorul de tensiune are rolul de a asigura o valoare constant a

tensiunii furnizate de surs indiferent de variaiile tensiunii reelei dealimentare sau ale consumului.

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15. Concluzii

1. Analiza n curent continuu prezint variaia curentului colector al

unui tranzistor.2. Analiza n curent alternativ afieaz n fiierul .PROBE tensiuneade ieire n funcie de frecven.

3. n cazul analizelor n curent continuu, SENS, TF condensatoareleau fost nlocuite cu rezistene de valori foarte mari, pentru c ncurent continuu condensatoarele sunt ntreruperi. nlocuireaacestora cu rezistene de valori mari permite realizarea analizei.

4. Analiza de temperatur asigur faptul c amplificatorulfuncioneaz aproximativ la fel, avnd n vedere valoriletensiunilor din noduri.

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16. Bibliografie

http://alldatasheet.com http://myweb.msoe.edu/~meier/tutorials/spicedecks.html

proiectare asistata de calculator - amplificator audio

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