Version 4 SHEET 1 1412 1224 WIRE -144 -112 -208 -112 WIRE 160 -112 -144 -112 WIRE 336 -112 160 -112 WIRE 544 -112 480 -112 WIRE 608 -112 544 -112 WIRE 160 -64 160 -112 WIRE 480 16 480 -112 WIRE -208 32 -208 -112 WIRE 160 64 160 16 WIRE 160 64 48 64 WIRE 240 64 160 64 WIRE 608 96 608 -112 WIRE 160 112 160 64 WIRE 336 112 336 -112 WIRE 480 144 480 96 WIRE 544 144 480 144 WIRE 48 160 48 64 WIRE 96 160 48 160 WIRE 240 160 240 64 WIRE 272 160 240 160 WIRE -208 256 -208 112 WIRE 160 256 160 208 WIRE 160 256 -208 256 WIRE 336 256 336 208 WIRE 336 256 160 256 WIRE 608 256 608 192 WIRE -208 272 -208 256 FLAG -208 272 0 FLAG 608 256 0 FLAG -144 -112 VCC FLAG 544 -112 VCC SYMBOL npn 272 112 R0 SYMATTR InstName Q2 SYMATTR Value BCX SYMBOL npn 96 112 R0 SYMATTR InstName Q1 SYMATTR Value BCX SYMBOL voltage -208 16 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL npn 544 96 R0 SYMATTR InstName Q3 SYMATTR Value BCX SYMBOL current 480 16 R0 SYMATTR InstName I1 SYMATTR Value 10µ SYMBOL Misc\\EuropeanResistor 144 -80 R0 SYMATTR InstName R1 SYMATTR Value 1k TEXT -200 -232 Left 2 !.op TEXT -224 344 Left 2 !.model BCX NPN(\n+ IS=1.89314e-14 BF=1536.18 NF=0.942746 VAF=16.0274 \n+ IKF=0.095245 ISE=4.13018e-14 NE=1.2599\n+ BR=0.1 NR=1.13089 VAR=1.05111 IKR=0.622681\n+ ISC=1.79251e-14 NC=2.7038 \n+ RB=3.11982 IRB=0.1 RBM=0.1 RE=0.0001 RC=0.001\n+ CJE=7.6843e-12 VJE=0.4 MJE=0.349069 TF=5.80579e-10 \n+ XTF=4.00934 VTF=28.4173 ITF=0.176065 PTF=0\n+ CJC==3.9003e-12 VJC=0.821072 MJC=0.329281 XCJC=0.8\n+ TR=1e-7 CJS=0 VJS=0.75 MJS=0.5 XTB=0.1 EG=1.05 \n+ XTI=1 FC=0.8 TNOM=27 KF=0 AF=1 NK=0.5) TEXT -200 -304 Left 2 !.dc V1 0 12 10m I1 20u 100u 20u TEXT -200 -264 Left 2 ;.dc V1 0 12 10m TEXT -208 672 Left 2 ;--- Operating Point ---\n \nV(vcc): 12 voltage\nV(n001): 0.694598 voltage\nV(n002): 0.623559 voltage\nIc(Q3): 0.00262932 device_current\nIb(Q3): 9.99999e-006 device_current\nIe(Q3): -0.00263932 device_current\nIc(Q1): 0.0111004 device_current\nIb(Q1): 0.000102499 device_current\nIe(Q1): -0.0112029 device_current\nIc(Q2): 0.0341612 device_current\nIb(Q2): 0.000102492 device_current\nIe(Q2): -0.0342637 device_current\nI(I1): 1e-005 device_current\nI(R1): 0.0113054 device_current\nI(V1): -0.0481059 device_current