proiect pac
TRANSCRIPT
UNIVERSITATEA POLITEHNICA DIN BUCURESTI FACULTATEA TRANSPORTURISECIA TELECOMENZI I ELECTRONIC N TRANSPORTURI
PROIECTARE ASISTAT DE CALCULATOR
PROIECT
ndrumtor:
2009-2010
Cerinte Proiect P.A.C1.Cuprins (ex: 1.Amplificator de radiofrecventa1(pag)) 2.Prezentarea circuitului: -cum se numeste circuitul -schema electrica -cum functioneaza circuitul si unde se foloseste(caracteristici tehnice) -pentru schemele cu circuite integrate este necesara prezentarea datelor de catalog specifice circuitelor respective. 3. Schema electrica a circuitului desenata in Schematics sau Orcad Capture, cu amplasarea nodurilor. 4.Prezentarea parametrilor h ai tranzistoarelor, desenarea schemei interne a tranzistoarelor cu parametrii hibrizi(+amplasarea nodurilor) si definirea schemei ca subcircuit. 5.Analiza in current continuu.Caracteristica de iesire pentru fiecare transistor in parte. 6. Analiza functiei de transfer. 7. Analiza in curent alternativ(analiza in functie de frecventa). 8.Analiza in domeniul timp. a)pentru circuit -la acest tip de analiza se va folosi la intrarea amplificatorului o sursa de semnal sinusoidal (8311), semnal dreptunghiular(8312), semnal triunghiular(8313) -analiza se va fi facuta atat in PSpice A/D Student cat si in Orcad Capture sau Schematics. -La simularea in Orcad Capture sau Schematics se va prezenta si fisierul de program Netlist b)pentru schema echivalenta cu parametrii hibrizi (desenarea schemei cu parametrii hibrizi) (fara simulrare din Orcad Capture sau Schematics) 9.Transformata Fourier pentru semalul de intrare si cel de iesire. 10. Analiza in functie de un parametru(analiza parametrica). 11. Analiza in functie de temperatura. 12.Cablajul circuitului. 13. Bibliografie. La fiecare tip de analiza se va prezenta sintaxa de definire, schema (unde este ceruta), programul, rezultatele analizei si concluziile in functie de rezultatele analizei. La sustinerea proiectului este necesara si prezentarea in format electronic pentru verificarea progamelor.
Proiect PAC 2009-2010
1. Proiectarea unui amplificator audio (cu minim 2 tranzistoare i maxim 10 tranzistoare) relaii de calcul privind proiectarea precum i date tehnice specifice amplificatorului (tensiune minim/maxim de intrare, banda de frecvene, tensiune maxim de ieire, putere de ieire la 1kHz, impedan de intrare, impedan de ieire, amplificare, gam de temperaturi de funcionare, tensiuni de alimentare). Date tehnice specifice amplificatorului: Tensiune minima de intrare: 50mV Tensiune maxima de intrare:750mV Banda de frecvente: 20Hz-30.000Hz Tensiune maxima de iesire:2V Putere de iesire la 1kHz: 6 W Impedanta de intrare: Zi=20 MOhm Impedanta de iesire: Ze=48.9 MOhm Amplificare: 2.7 Gama de temperature de functionare: -63 C +170 C
2.Prezentarea circuitului:
Program Spice
* Battery(s) * V3 0 8 DC 12 * AC Voltage Source(s) * V2 3 9 AC 1 0 SIN(0 282.843m 50 0 0 0) * Resistor(s) * R1 3 5 100K * R2 6 7 1K * R3 8 7 25 * Diode(s) * D1 5 2 D_1n_1N4148 * D2 6 5 D_1n_1N4148 * NPN Transistor(s) * Q4 2 3 9 Qn2n_2N3904 * Q1 8 6 4 Qnmotorol1_Q2N3053 * PNP Transistor(s) * Q3 4 2 0 Qpphilips2_Q2N2905A * Connector(s) * node = 8, label = * node = 7, label = * node = 5, label = * node = 4, label = * node = 0, label = * node = 0, label = * node = 3, label = * node = 2, label = * Polarized Capacitor(s) * C2 3 9 47u *
C1 7 4 470u * Misc .MODEL D_1n_1N4148 D(Is=1.42e-18 Rs=4.2 Cjo=1.73p Vj=750m Tt=5.76n M=333m +BV=74.9 N=1.7 EG=1.11 XTI=3 KF=0 AF=1 FC=500m IBV=1m TNOM=27) .MODEL Qn2n_2N3904 NPN(Is=7.62e-16 BF=204 BR=4 Rb=2.1 Re=525m Rc=210m +Cjs=0 Cje=4.85p Cjc=5.28p Vje=750m Vjc=750m Tf=318p Tr=44.6n mje=333m +mjc=333m VA=113 ISE=308f IKF=70m Ne=2 NF=1 NR=1 VAR=1e+30 IKR=1e+30 ISC=0 +NC=2 IRB=1e+30 RBM=0 XTF=0 VTF=1e+30 ITF=0 PTF=0 XCJC=1 VJS=750m MJS=0 +XTB=0 EG=1.11 XTI=3 KF=0 AF=1 FC=500m TNOM=27) .MODEL Qnmotorol1_Q2N3053 NPN(Is=110.1n BF=150 BR=1 Rb=0 Re=0 Rc=0 Cjs=0 +Cje=94.85p Cjc=36.437p Vje=750m Vjc=750m Tf=801.83p Tr=10n mje=333.33m +mjc=333.33m VA=100 ISE=0 IKF=10m Ne=1.5 NF=1 NR=1 VAR=100 IKR=10m ISC=0 +NC=2 IRB=1e+30 RBM=0 XTF=10 VTF=10 ITF=1 PTF=0 XCJC=1 VJS=750m MJS=0 +XTB=0 EG=1.11 XTI=3 KF=0 AF=1 FC=500m TNOM=27) .MODEL Qpphilips2_Q2N2905A PNP(Is=6.4672e-19 BF=200 BR=2 Rb=0 Re=0 Rc=0 +Cjs=0 Cje=46.261p Cjc=19.433p Vje=750m Vjc=750m Tf=524.13p Tr=10n +mje=333.33m mjc=333.33m VA=100 ISE=0 IKF=10m Ne=1.5 NF=1 NR=1 VAR=100 +IKR=10.01m ISC=1f NC=2 IRB=1e+30 RBM=0 XTF=10 VTF=10 ITF=1 PTF=0 XCJC=1 +VJS=750m MJS=0 XTB=0 EG=1.11 XTI=3 KF=0 AF=1 FC=500m TNOM=27) .PROBE .OPTIONS ITL4=25 .END 3. Schema electrica a circuitului desenata in Schematics sau Orcad Capture, cu amplasarea nodurilor.
4.Prezentarea parametrilor h ai tranzistoarelor, desenarea schemei interne a tranzistoarelor cu parametrii hibrizi(+amplasarea nodurilor) si definirea schemei ca subcircuit. Un tranzistor bipolar poate fi reprezentat cu ajutorul parametrilor hibrizi h. Parametrii hibrizi directi se definesc in modul urmator: Ui = hiIi + hrUo Io = hfIi + hoUoC
Astfel un tranzistor bipolar:
B E
poate fi definit cu ajutorul parametrilor hibrizi.
h i
I i
I o
U i
E
h r U
o
F
h fIi
h o
U o
In aceasta schema E reprezinta sursa de tensiune comandata in tensiune, iar F reprezinta sursa de curent comandata in curent. Se aproximeaza hr cu zero(hr=0) si se obtine schema cu care se aproximeaza un tranzistor bipolar cu ajutorul parametrilor hibrizi directi.B h i I i I o C
F
h fIi
h o
E
In cazul nostru pentru tranzistorul Q1 vom avea schema care aproximeaza tranzistorul:B 1 0 h i I i 1 1 V 1 1 2 E F h fIi h o 1 3 I o C
Sursa de tensiune V1 o vom declara de valoare 0 pentru a putea sti curentul Ii de care e nevoie pentru a defini sursa de curent comandata in curent F. Astfel subcircuitul definit in PSpice va fi: X_Q1 8 6 4 TRANSISTOR1 .SUBCKT TRANSISTOR1 13 10 12 R11 10 11 2K R22 13 12 2K V1 11 12 0V F1 13 12 V1 150 .ENDS
La fel se procedeaza si pentru tranzistorul Q3:B 1 4 h i I i 1 5 V 2 1 6 E F h fIi h o 1 7 I o C
Subcircuitul definit in PSpice va fi: X_Q3 4 2 0 TRANSISTOR2 .SUBCKT TRANSISTOR2 17 14 16 Ri 14 15 2K Ro 17 16 2K V2 15 16 0V F2 17 16 V2 150 .ENDS La fel se procedeaza si pentru tranzistorul Q4: B 18 hi Ii 19 V2 20 E Subcircuitul definit in PSpice va fi: X_Q4 2 3 9 TRANSISTOR3 .SUBCKT TRANSISTOR2 21 18 20 Ri 18 19 2K Ro 21 20 2K V2 19 20 0V F2 21 20 V2 150 .ENDS F hfIi ho 21 Io C
5.Analiza in current continuu.Caracteristica de iesire pentru fiecare transistor in parte. .DC V2 0.2 12 0.035 OUT: BJT MODEL PARAMETERS Qn2n_2N3904 Qnmotorol1_Q2N3053 NPN NPN T_Measured 27 27 T_Current 27 27 IS 762.000000E-18 110.100000E-09 BF 204 150 NF 1 1 VAF 113 100 IKF .07 .01 ISE 308.000000E-15 NE 2 BR 4 1 NR 1 1 VAR :00.000000E+27 100 IKR :00.000000E+27 .01 RB 2.1 IRB :00.000000E+27 :00.000000E+27 RE .525 RC .21 CJE 4.850000E-12 94.850000E-12 MJE .333 .33333 CJC 5.280000E-12 36.437000E-12 MJC .333 .33333 TF 318.000000E-12 801.830000E-12 XTF 10 VTF :00.000000E+27 10 ITF 1 TR 44.600000E-09 10.000000E-09 CN 2.42 2.42 D .87 .87 Qpphilips2_Q2N2905A PNP T_Measured 27 T_Current 27 IS 646.720000E-21 BF 200
NF 1 VAF 100 IKF .01 BR 2 NR 1 VAR 100 IKR .01001 ISC 1.000000E-15 IRB :00.000000E+27 CJE 46.261000E-12 MJE .33333 CJC 19.433000E-12 MJC .33333 TF 524.130000E-12 XTF 10 VTF 10 ITF 1 TR 10.000000E-09 CN 2.2 D2.4258pA
.52
2.4257pA
2.4256pA 0V IC(Q1) V2 2V 4V 6V 8V 10V 12V
Proiectarea unei surse de curent continuu (minim componentele de redresare, stabilizare i filtrare) simularea funcionrii sursei de cc pentru alimentarea de la sursa de 220V i obinerea tensiunilor prevzute la punctul 1). 6. Analiza functiei de transfer.
.TF V(7, 8) V2 SMALL-SIGNAL CHARACTERISTICS V(7,8)/V2 = 1.735E-05 INPUT RESISTANCE AT V2 = 1.439E+06 OUTPUT RESISTANCE AT V(7,8) = 2.500E+01 7. Analiza in curent alternativ(analiza in functie de frecventa). .AC LIN 170 10HZ 30KHZ249.92uV
249.90uV
249.88uV 0Hz
4KHz V(8) - V(7)
8KHz
12KHz
16KHz Frequency
20KHz
24KHz
28KHz
32KHz
****
SMALL SIGNAL BIAS SOLUTION NODE
TEMPERATURE = 27.000 DEG C NODE VOLTAGE NODE
NODE VOLTAGE VOLTAGE ( ( 2) -.4247 (
VOLTAGE
3) -12.0000 ( 7) -12.0000 (
4) -12.0000 ( 8) -12.0000 (
5) -6.2123 9) 0.0000
6) -12.0000 (
VOLTAGE SOURCE CURRENTS NAME CURRENT V1 V2 -3.218E-11 0.000E+00
TOTAL POWER DISSIPATION 3.86E-10 WATTS
8.Analiza in domeniul timp V2 9 0 AC 1 0 SIN(0 750m 1k 0 0 0) .TRAN 1NS 10MS200uV
0V
-200uV 0s 1ms V(8) - V(7) 2ms 3ms 4ms 5ms Time 6ms 7ms 8ms 9ms 10ms
***
BJT MODEL PARAMETERS
Qn2n_2N3904 Qnmotorol1_Q2N3053 NPN NPN T_Measured 27 27 T_Current 27 27 IS 762.000000E-18 110.100000E-09 BF 204 150 NF 1 1 VAF 113 100 IKF .07 .01 ISE 308.000000E-15 NE 2 BR 4 1 NR 1 1 VAR :00.000000E+27 100 IKR :00.000000E+27 .01 RB 2.1 IRB :00.000000E+27 :00.000000E+27 RE .525 RC .21 CJE 4.850000E-12 94.850000E-12 MJE .333 .33333 CJC 5.280000E-12 36.437000E-12 MJC .333 .33333 TF 318.000000E-12 801.830000E-12 XTF 10 VTF :00.000000E+27 10 ITF 1
TR 44.600000E-09 10.000000E-09 CN 2.42 2.42 D .87 .87 Qpphilips2_Q2N2905A PNP T_Measured 27 T_Current 27 IS 646.720000E-21 BF 200 NF 1 VAF 100 IKF .01 BR 2 NR 1 VAR 100 IKR .01001 ISC 1.000000E-15 IRB :00.000000E+27 CJE 46.261000E-12 MJE .33333 CJC 19.433000E-12 MJC .33333 TF 524.130000E-12 XTF 10 VTF 10 ITF 1 TR 10.000000E-09 CN 2.2 D .52 **** INITIAL TRANSIENT SOLUTION NODE TEMPERATURE = 27.000 DEG C NODE VOLTAGE NODE
NODE VOLTAGE VOLTAGE ( ( 2) -.4247 (
VOLTAGE
3) -12.0000 ( 7) -12.0000 (
4) -12.0000 ( 8) -12.0000 (
5) -6.2123 9) 0.0000
6) -12.0000 (
VOLTAGE SOURCE CURRENTS NAME CURRENT V1 -3.218E-11
V2
0.000E+00
TOTAL POWER DISSIPATION 3.86E-10 WATTS
9.Transformata Fourier pentru semalul de intrare si cel de iesire. .FOUR 60hz V(7,8)80uV
40uV
0V 0Hz
40Hz V(8) - V(7)
80Hz
120Hz
160Hz Frequency
200Hz
240Hz
280Hz
320Hz
FOURIER COMPONENTS OF TRANSIENT RESPONSE V(7,8) DC COMPONENT = -6.008196E-06 HARMONIC FREQUENCY NORMALIZED NO (HZ) COMPONENT 1 2 3 4 5 6 7 8 9 6.000E+01 1.200E+02 1.800E+02 2.400E+02 3.000E+02 3.600E+02 4.200E+02 4.800E+02 5.400E+02 6.913E-05 1.239E-05 7.640E-06 5.793E-06 4.798E-06 4.192E-06 4.029E-06 2.597E-06 2.279E-06 FOURIER COMPONENT 1.000E+00 1.792E-01 1.105E-01 8.380E-02 6.941E-02 6.063E-02 5.828E-02 3.756E-02 3.296E-02 NORMALIZED (DEG) PHASE
PHASE (DEG)
2.652E+01 1.801E+01 1.578E+01 1.449E+01 1.303E+01 1.101E+01 7.281E+00 1.135E+01 -1.215E+00
0.000E+00 -3.503E+01 -6.377E+01 -9.157E+01 -1.196E+02 -1.481E+02 -1.783E+02 -2.008E+02 -2.399E+02
TOTAL HARMONIC DISTORTION = 2.563775E+01 PERCENT
10. Analiza in functie de un parametru(analiza parametrica). Program Spice * Battery(s) * V3 0 8 DC 12 * AC Voltage Source(s) * V2 3 9 AC 1 0 SIN(0 282.843m 50 0 0 0) * Resistor(s) * R1 3 5 100K * R2 6 7 1K * R3 8 7 25 * Diode(s) * D1 5 2 D_1n_1N4148 * D2 6 5 D_1n_1N4148 * NPN Transistor(s) * Q4 2 3 9 Qn2n_2N3904 * Q1 8 6 4 Qnmotorol1_Q2N3053 * PNP Transistor(s) * Q3 4 2 0 Qpphilips2_Q2N2905A * Connector(s) * node = 8, label = * node = 7, label = * node = 5, label = * node = 4, label = * node = 0, label = * node = 0, label = * node = 3, label = * node = 2, label =
* Polarized Capacitor(s) * C2 3 9 47u * C1 7 4 470u * Misc .MODEL D_1n_1N4148 D(Is=1.42e-18 Rs=4.2 Cjo=1.73p Vj=750m Tt=5.76n M=333m +BV=74.9 N=1.7 EG=1.11 XTI=3 KF=0 AF=1 FC=500m IBV=1m TNOM=27) .MODEL Qn2n_2N3904 NPN(Is=7.62e-16 BF=204 BR=4 Rb=2.1 Re=525m Rc=210m +Cjs=0 Cje=4.85p Cjc=5.28p Vje=750m Vjc=750m Tf=318p Tr=44.6n mje=333m +mjc=333m VA=113 ISE=308f IKF=70m Ne=2 NF=1 NR=1 VAR=1e+30 IKR=1e+30 ISC=0 +NC=2 IRB=1e+30 RBM=0 XTF=0 VTF=1e+30 ITF=0 PTF=0 XCJC=1 VJS=750m MJS=0 +XTB=0 EG=1.11 XTI=3 KF=0 AF=1 FC=500m TNOM=27) .MODEL Qnmotorol1_Q2N3053 NPN(Is=110.1n BF=150 BR=1 Rb=0 Re=0 Rc=0 Cjs=0 +Cje=94.85p Cjc=36.437p Vje=750m Vjc=750m Tf=801.83p Tr=10n mje=333.33m +mjc=333.33m VA=100 ISE=0 IKF=10m Ne=1.5 NF=1 NR=1 VAR=100 IKR=10m ISC=0 +NC=2 IRB=1e+30 RBM=0 XTF=10 VTF=10 ITF=1 PTF=0 XCJC=1 VJS=750m MJS=0 +XTB=0 EG=1.11 XTI=3 KF=0 AF=1 FC=500m TNOM=27) .MODEL Qpphilips2_Q2N2905A PNP(Is=6.4672e-19 BF=200 BR=2 Rb=0 Re=0 Rc=0 +Cjs=0 Cje=46.261p Cjc=19.433p Vje=750m Vjc=750m Tf=524.13p Tr=10n +mje=333.33m mjc=333.33m VA=100 ISE=0 IKF=10m Ne=1.5 NF=1 NR=1 VAR=100 +IKR=10.01m ISC=1f NC=2 IRB=1e+30 RBM=0 XTF=10 VTF=10 ITF=1 PTF=0 XCJC=1 +VJS=750m MJS=0 XTB=0 EG=1.11 XTI=3 KF=0 AF=1 FC=500m TNOM=27) .PROBE .OPTIONS ITL4=25 .END
*********** Evaluation PSpice **************Analiza parametrica
****
CURRENT STEP
.PARAM R = 4 NODE VOLTAGE 4) 644.1E-06
NODE VOLTAGE NODE VOLTAGE ( ( ( 1) 0.0000 (
NODE VOLTAGE 3)
2) 644.1E-06 (
0.0000 (
5) 618.4E-06 ( 6) 4.802E-09 (
7) 127.0E-09 ( 8) 225.0E-09 0.0000
9) 13.9410 ( 10) 14.0770 ( 11) 15.0000 ( 12)
( 13) 13.2540 VOLTAGE SOURCE CURRENTS NAME CURRENT V1 V2 0.000E+00 -2.367E-03
TOTAL POWER DISSIPATION 3.55E-02 WATTS **** CURRENT STEP PARAM R = 3.0000E+03
NODE VOLTAGE NODE VOLTAGE ( ( ( 1) 0.0000 (
NODE VOLTAGE
NODE VOLTAGE
2) 644.1E-06 (
3)
0.0000 (
4) 644.1E-06
5) 618.4E-06 ( 6) 4.802E-09 (
7) 127.0E-09 ( 8) 225.0E-09 0.0000
9) 13.9410 ( 10) 14.0770 ( 11) 15.0000 ( 12)
( 13) 13.2540
VOLTAGE SOURCE CURRENTS NAME CURRENT V1 V2 0.000E+00 -2.367E-03
TOTAL POWER DISSIPATION 3.55E-02 WATTS **** CURRENT STEP PARAM R = 33.0000E+03 NODE VOLTAGE
NODE VOLTAGE NODE VOLTAGE ( ( ( 1) 0.0000 (
NODE VOLTAGE
2) 644.1E-06 (
3)
0.0000 (
4) 644.1E-06
5) 618.4E-06 ( 6) 4.802E-09 (
7) 127.0E-09 ( 8) 225.0E-09 0.0000
9) 13.9410 ( 10) 14.0770 ( 11) 15.0000 ( 12)
( 13) 13.2540 VOLTAGE SOURCE CURRENTS NAME CURRENT V1 V2 0.000E+00 -2.367E-03
TOTAL POWER DISSIPATION 3.55E-02 WATT
11. Analiza in functie de temperatura. .TEMP -27 90100uV
0V
-100uV 0s 10ms 20ms V(8) - V(7) 30ms 40ms 50ms Time 60ms 70ms 80ms 90ms 100ms
**** TEMPERATURE-ADJUSTED VALUES DEG C
TEMPERATURE = -27.000
**** DIODE MODEL PARAMETERS NAME IS VJ CJO RS IKF D_1n_1N4148 (T_Current -27 T_Measured 27) 3.936E-21 8.418E-01 1.647E-12 7.490E+01
BV 4.200E+00 0.000E+00
**** BJT MODEL PARAMETERS NAME BF ISE VJE CJE RE RB BR ISC VJC CJC RC RBM IS ISS VJS CJS GAMMA RCO VO Qn2n_2N3904 (T_Current -27 T_Measured 27) 2.040E+02 2.065E-15 8.418E-01 4.617E-12 5.250E-01 4.000E+00 0.000E+00 8.418E-01 5.027E-12 2.100E+00 3.425E-20 0.000E+00 8.418E-01 0.000E+00 0.000E+00 1.000E+01 Qnmotorol1_Q2N3053 (T_Current -27 T_Measured 27) 1.500E+02 0.000E+00 8.418E-01 9.030E-11 0.000E+00 1.000E+00 0.000E+00 8.418E-01 3.469E-11 0.000E+00 4.949E-12 0.000E+00 8.418E-01 0.000E+00 0.000E+00 1.000E+01
2.100E+00 2.100E-01 1.000E-11
0.000E+00 0.000E+00 1.000E-11
Qpphilips2_Q2N2905A (T_Current -27 T_Measured 27) 2.000E+02 0.000E+00 8.418E-01 4.404E-11 0.000E+00 0.000E+00 2.000E+00 6.704E-18 8.418E-01 1.850E-11 0.000E+00 0.000E+00 2.907E-23 0.000E+00 8.418E-01 0.000E+00 1.000E-11 0.000E+00 1.000E+01 **** INITIAL TRANSIENT SOLUTION DEG C NODE VOLTAGE VOLTAGE ( ( 2) -.5526 ( NODE VOLTAGE TEMPERATURE = -27.000 NODE VOLTAGE NODE
3) -5.1114 ( 7) -12.0000 (
4) -5.1114 ( 8) -12.0000 (
5) -6.2762 9) 0.0000
6) -12.0000 (
VOLTAGE SOURCE CURRENTS NAME CURRENT V1 V2 -1.846E-11 0.000E+00
TOTAL POWER DISSIPATION 2.21E-10 WATTS
**** TEMPERATURE-ADJUSTED VALUES 90.000 DEG C **** DIODE MODEL PARAMETERS NAME IS VJ CJO RS IKF D_1n_1N4148 (T_Current 90 T_Measured 27) 1.586E-16 6.375E-01 1.831E-12 7.490E+01
TEMPERATURE =
BV 4.200E+00 0.000E+00
**** BJT MODEL PARAMETERS NAME BF ISE VJE CJE RE RB BR ISC VJC CJC RC RBM IS ISS VJS CJS GAMMA RCO VO
Qn2n_2N3904 (T_Current 90 T_Measured 27) 2.040E+02 1.696E-11 6.375E-01 5.133E-12 5.250E-01 4.000E+00 0.000E+00 6.375E-01 5.588E-12 2.100E+00 2.310E-12 0.000E+00 6.375E-01 0.000E+00 0.000E+00 1.000E+01 Qnmotorol1_Q2N3053 (T_Current 90 T_Measured 27) 1.500E+02 0.000E+00 6.375E-01 1.004E-10 0.000E+00 1.000E+00 0.000E+00 6.375E-01 3.857E-11 0.000E+00 3.338E-04 0.000E+00 6.375E-01 0.000E+00 0.000E+00 1.000E+01 Qpphilips2_Q2N2905A (T_Current 90 T_Measured 27) 2.000E+02 0.000E+00 6.375E-01 4.896E-11 0.000E+00 2.000E+00 5.506E-14 6.375E-01 2.057E-11 0.000E+00 1.961E-15 0.000E+00 6.375E-01 0.000E+00 0.000E+00 1.000E+01 **** INITIAL TRANSIENT SOLUTION DEG C NODE VOLTAGE VOLTAGE ( ( 2) -.2677 ( NODE VOLTAGE
2.100E+00 2.100E-01 1.000E-11
0.000E+00 0.000E+00 1.000E-11
0.000E+00 0.000E+00 1.000E-11
TEMPERATURE = NODE VOLTAGE
90.000 NODE
3) -12.0000 ( 7) -12.0000 (
4) -12.0000 ( 8) -12.0000 (
5) -6.1338 9) 0.0000
6) -12.0000 (
VOLTAGE SOURCE CURRENTS NAME CURRENT V1 V2 -5.119E-11 0.000E+00
TOTAL POWER DISSIPATION 6.14E-10 WATT
12. Cablajul circuitului.
13. Bibliografie. http://www.radioamator.ro/articole/view.php?id=590 http://www.circuiteelectrice.ro/electronica-analogica/tranzistorul/cuplajul-de-intrare-si-iesire Concluzii
Analiza in curent continuu este realizata pentru sursa V2, in intervalul [0.2,12] volti. Urechea umana percepe sunete cu frecventa cuprinsa intre 20 Hz si 20 KHz, de aceea am realizat analiza in curent alternativ in intervalul (10hz,30khz),pentru vizualizarea cat mai clara a evolutiei tensiunii de pe difuzor. In cazul analizelor in curent continuu, SENS, TF condensatoarele au fost inlocuite cu rezistente de valori foarte mari.Altfel graficele ar fi fost inutile deoarece in curent continuu condesatoarele sunt intreruperi. Analiza de temperatura asigura faptul ca amplificatorul functioneaza aproximativ la fel, avand in vedere valorile tensiunilor din noduri, atat la temperatura de -27C cat si 90C,conform specificatiilor tehnice. Se observa o scadere a tensiunii de iesire odata cu cresterea temperaturii. Valorile parametrilor hibirizi au fost considerate cele oferite de Data Sheetul tranzistorului BC108C