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https://github.com/erik-toth/audio-synth.git
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Leistungsstufe mit LM386
Schaltung entworfen, noch nicht aufgebaut, Simulation erfolgreich
This commit is contained in:
Erik Tóth
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ETOTH-Amp_LM386
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*SPICE Netlist generated by Advanced Sim server on 18.11.2025 21:38:20
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.options MixedSimGenerated
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*Schematic Netlist:
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CC1 NetC1_1 NetC1_2 50nF
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CC_VCM1 NetC_VCM1_1 GND 47uF
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CC_VCM2 VAP NetC_VCM1_1 47uF
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CCblock NetC1_2 NetCblock_2 2000uF
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CCblock1 NetCblock1_1 NetCblock1_2 2000uF
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XIC1C NetIC1_10 NetC_VCM1_1 VAP GND NetIC1_8 TL074
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XIC2 NetIC2_1 GND NetCblock1_2 GND NetC1_2 VAP NetIC2_7 NetIC2_8 LM386
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RR1 NetC1_1 GND 10R
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RR_POTA 0 NetCblock1_1 {10k * {POS}}
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RR_POTB NetCblock1_1 NetR_POT_3 {10k - (10k * {POS})}
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RR_rs1 NetIC1_10 VAP 470k
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RR_rs2 GND NetIC1_10 470k
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RR_Speaker GND NetCblock_2 8R
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QT_rsN GND NetIC1_8 NetC_VCM1_1 2N2907
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QT_rsP VAP NetIC1_8 NetC_VCM1_1 2N2222
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VU_q VAP GND 10V
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VU_VCM_CURRENT 0 NetC_VCM1_1 0
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VUin NetR_POT_3 0 DC 0 SIN(0 2 440Hz 0 0 0) AC 1 0
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.PLOT TRAN {v(R_Speaker)} =PLOT(1) =AXIS(1) =NAME(U_speaker) =UNITS(V) =RGB(0, 255, 0)
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.PLOT TRAN {i(R_Speaker)} =PLOT(2) =AXIS(1) =NAME(I_speaker) =UNITS(A)
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.PLOT TRAN {p(R_Speaker)} =PLOT(3) =AXIS(1) =NAME(P_speaker) =UNITS(W)
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.PLOT TRAN {i(U_VCM_CURRENT)} =PLOT(4) =AXIS(1) =NAME(I_VCM) =UNITS(A)
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.PLOT TRAN {v(VAP)} =PLOT(1) =AXIS(1) =RGB(255, 0, 0)
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.PLOT TRAN {v(GND)} =PLOT(1) =AXIS(1) =RGB(0, 0, 255)
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.PLOT TRAN {i(Cblock1)} =PLOT(5) =AXIS(1) =NAME(I_C_in) =UNITS(A)
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.PLOT TRAN {v(Cblock1)} =PLOT(5) =AXIS(2) =NAME(U_C_in) =UNITS(V)
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.PLOT TRAN {i(Cblock1)} =PLOT(5) =AXIS(1) =NAME(I_C_out) =UNITS(A)
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.PLOT TRAN {v(Cblock1)} =PLOT(5) =AXIS(2) =NAME(U_C_out) =UNITS(V)
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.OPTIONS METHOD=GEAR MAXORD=2
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*Selected Circuit Analyses:
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.TRAN 45.45u 22.73m 0 45.45u
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.CONTROL
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.ENDC
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*Global Parameters:
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.PARAM POS={0.06}
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*Models and Subcircuits:
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*TL074
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*Quad LoNoise JFETInput OpAmp pkg:DIP14
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*+ (A:3,2,4,11,1)(B:5,6,4,11,7)(C:10,9,4,11,8)(D:12,13,4,11,14)
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* Connections:
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* Non-Inverting Input
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* | Inverting Input
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* | | Positive Power Supply
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* | | | Negative Power Supply
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* | | | | Output
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* | | | | |
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.SUBCKT TL074 1 2 3 4 5
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C1 11 12 3.498E-12
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C2 6 7 15E-12
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DC 5 53 DX
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DE 54 5 DX
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DLP 90 91 DX
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DLN 92 90 DX
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DP 4 3 DX
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BGND 99 0 V=V(3)*.5 + V(4)*.5
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BB 7 99 I=I(VB)*4.715E6 - I(VC)*5E6 + I(VE)*5E6 +
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+ I(VLP)*5E6 - I(VLN)*5E6
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GA 6 0 11 12 282.8E-6
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GCM 0 6 10 99 8.942E-9
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ISS 3 10 DC 195E-6
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HLIM 90 0 VLIM 1K
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J1 11 2 10 JX
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J2 12 1 10 JX
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R2 6 9 100E3
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RD1 4 11 3.536E3
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RD2 4 12 3.536E3
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RO1 8 5 150
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RO2 7 99 150
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RP 3 4 2.143E3
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RSS 10 99 1.026E6
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VB 9 0 DC 0
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VC 3 53 DC 2.2
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VE 54 4 DC 2.2
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VLIM 7 8 DC 0
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VLP 91 0 DC 25
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VLN 0 92 DC 25
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.MODEL DX D(IS=800E-18)
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.MODEL JX PJF(IS=15E-12 BETA=270.1E-6 VTO=-1)
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.ENDS TL074
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*TopSPICE library: Models\MISCSEMI.MDB
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*PART NUMBER: LM386
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*MODEL NAME: LM386
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*SYMBOL: X8PIN
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*
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*LM386 Audio power amplifier
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* /*
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* 1. The following model behavior shows good agreement with the
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* LM386 data sheet values:
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*
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* a) Quiescent power supply current;
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* b) High frequency response at low gain setting;
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* c) Power-supply rejection ratio, both bypassed and unbypassed;
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* d) Voltage gain, both with pins 1&8 shorted and open; and
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* e) Total harmonic distortion.
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*
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* 2. The model has the following discrepancies:
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*
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* f) High-gain frequency response looks somewhat more wideband
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* than the actual device;
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* g) Peak-to-peak output voltage swing is a bit more than the
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* data sheet value- in other words, the model drives
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* closer to the rails; and
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* h) Input bias current in this model is only about 7 nA,
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* compared with the 250 nA "typical" value mentioned in
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* the data sheet.
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*
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* 3. The frequency response characteristics of this LM386 model
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* can be adjusted somewhat by changing C1, the rolloff capacitor in
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* the voltage gain stage. It could also be made more realistic by
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* tweaking transistor model parameters Cjc, Cje, Tr and Tf,
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* although this can get pretty hairy.
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*
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* 4. Likewise, output drive capability could be made more
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* realistic by tweaking transistor model parameters; again, this is
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* hairy.
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*/
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*
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.subckt lm386 g1 inn inp gnd out vs byp g8
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* | | | | | | | |
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* IC pins: 1 2 3 4 5 6 7 8
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* input emitter-follower buffers:
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q1 gnd inn 10011 ddpnp
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r1 inn gnd 50k
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q2 gnd inp 10012 ddpnp
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r2 inp gnd 50k
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* differential input stage, gain-setting
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* resistors, and internal feedback resistor:
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q3 10013 10011 10008 ddpnp
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q4 10014 10012 g1 ddpnp
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r3 vs byp 15k
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r4 byp 10008 15k
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r5 10008 g8 150
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r6 g8 g1 1.35k
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r7 g1 out 15k
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* input stage current mirror:
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q5 10013 10013 gnd ddnpn
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q6 10014 10013 gnd ddnpn
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* voltage gain stage & rolloff cap:
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q7 10017 10014 gnd ddnpn
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c1 10014 10017 15pf
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* current mirror source for gain stage:
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i1 10002 vs dc 5m
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q8 10004 10002 vs ddpnp
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q9 10002 10002 vs ddpnp
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* Sziklai-connected push-pull output stage:
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q10 10018 10017 out ddpnp
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q11 10004 10004 10009 ddnpn 100
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q12 10009 10009 10017 ddnpn 100
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q13 vs 10004 out ddnpn 100
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q14 out 10018 gnd ddnpn 100
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* generic transistor models generated
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* with MicroSim's PARTs utility, using
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* default parameters except Bf:
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.model ddnpn NPN(Is=10f Xti=3 Eg=1.11 Vaf=100
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+ Bf=400 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100
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+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333
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+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n
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+ Tf=1n Itf=1 Xtf=0 Vtf=10)
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.model ddpnp PNP(Is=10f Xti=3 Eg=1.11 Vaf=100
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+ Bf=200 Ise=0 Ne=1.5 Ikf=0 Nk=.5 Xtb=1.5 Var=100
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+ Br=1 Isc=0 Nc=2 Ikr=0 Rc=0 Cjc=2p Mjc=.3333
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+ Vjc=.75 Fc=.5 Cje=5p Mje=.3333 Vje=.75 Tr=10n
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+ Tf=1n Itf=1 Xtf=0 Vtf=10)
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.ends LM386
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*2N2907 MCE 5-27-97
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*Ref: Motorola Small-Signal Device databook, Q4/94
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*Si 400mW 40V 600mA 250MHz GenPurp pkg:TO-18 3,2,1
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.MODEL 2N2907 PNP (IS=60.9F NF=1 BF=260 VAF=114 IKF=0.36 ISE=30.2P NE=2
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+ BR=4 NR=1 VAR=20 IKR=0.54 RE=85.8M RB=0.343 RC=34.3M XTB=1.5
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+ CJE=27.6P VJE=1.1 MJE=0.5 CJC=15.3P VJC=0.3 MJC=0.3 TF=636P TR=442N)
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*2N2222 MCE 5-20-97
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*Ref: Motorola Small-Signal Device Databook, Q4/94
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*Si 400mW 30V 800mA 300MHz GenPurp pkg:TO-18 3,2,1
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.MODEL 2N2222 NPN (IS=81.2F NF=1 BF=195 VAF=98.6 IKF=0.48 ISE=53.7P NE=2
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+ BR=4 NR=1 VAR=20 IKR=0.72 RE=64.4M RB=0.258 RC=25.8M XTB=1.5
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+ CJE=89.5P VJE=1.1 MJE=0.5 CJC=28.9P VJC=0.3 MJC=0.3 TF=530P TR=368N)
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.END
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@@ -0,0 +1,10 @@
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Output: Mixed Sim
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Type : AdvSimNetlist
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From : Project [ETOTH-Amp_LM386.PrjPcb]
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Generated File[ETOTH-Amp_LM386.nsx]
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Files Generated : 1
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Documents Printed : 0
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Finished Output Generation At 20:00:10 On 18.11.2025
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