Version 4 SHEET 1 3164 680 WIRE 1248 -256 304 -256 WIRE 640 -208 432 -208 WIRE 880 -208 640 -208 WIRE 880 -96 880 -208 WIRE 432 -64 432 -208 WIRE 432 -64 -16 -64 WIRE 816 -48 720 -48 WIRE 640 0 640 -128 WIRE 640 0 624 0 WIRE 656 0 640 0 WIRE 896 0 880 0 WIRE 304 32 304 -256 WIRE 336 32 304 32 WIRE -16 48 -16 -64 WIRE 896 48 896 0 WIRE 896 48 720 48 WIRE 624 64 624 0 WIRE 896 96 896 48 WIRE 1056 96 896 96 WIRE 304 112 304 96 WIRE 320 112 304 112 WIRE 336 112 320 112 WIRE 240 128 176 128 WIRE 320 128 320 112 WIRE 432 128 432 -64 WIRE 320 144 320 128 WIRE 400 144 320 144 WIRE 896 144 896 96 WIRE 896 144 720 144 WIRE 512 160 464 160 WIRE 624 160 624 128 WIRE 624 160 512 160 WIRE 1056 160 1056 96 WIRE 1056 160 960 160 WIRE 1136 160 1056 160 WIRE -16 176 -16 128 WIRE -16 176 -48 176 WIRE 352 176 192 176 WIRE 400 176 352 176 WIRE 960 176 960 160 WIRE 1136 176 1136 160 WIRE -48 192 -48 176 WIRE 624 192 624 160 WIRE 656 192 624 192 WIRE 896 208 896 144 WIRE 896 208 864 208 WIRE -16 240 -16 176 WIRE 720 256 720 240 WIRE 800 256 720 256 WIRE 960 272 960 240 WIRE 1056 272 1056 240 WIRE 1056 272 960 272 WIRE 1104 272 1056 272 WIRE 1136 272 1136 256 WIRE 1136 272 1104 272 WIRE 1248 272 1248 -256 WIRE 1248 272 1136 272 WIRE 432 320 432 192 WIRE 432 320 -16 320 WIRE 432 416 432 320 WIRE 864 416 864 304 WIRE 864 416 432 416 FLAG -48 192 0 FLAG 192 256 0 FLAG 352 256 0 FLAG 512 224 0 FLAG 1104 352 0 FLAG 176 128 0 SYMBOL voltage -16 32 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value SINE(15 0.1 100) SYMBOL voltage -16 224 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value SINE(15 0.1 100) SYMBOL Opamps\\LT1013 432 96 R0 SYMATTR InstName U1 SYMBOL voltage 192 160 R0 WINDOW 3 24 152 Left 2 WINDOW 123 24 124 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value SINE(0 0.5 1000) SYMATTR Value2 AC 1 SYMBOL pnp 656 240 M180 SYMATTR InstName Qbd140 SYMATTR Value Qbd140 SYMBOL pnp 816 0 M180 SYMATTR InstName Q2 SYMATTR Value mj21195 SYMBOL npn 656 -48 R0 SYMATTR InstName Qbd139 SYMATTR Value Qbd139 SYMATTR Prefix Q3 SYMBOL res 336 160 R0 SYMATTR InstName R1 SYMATTR Value 100k SYMBOL npn 800 208 R0 SYMATTR InstName Q4 SYMATTR Value Qmjl21196 SYMBOL res 624 -224 R0 SYMATTR InstName R2 SYMATTR Value 15k SYMBOL diode 608 64 R0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL cap 496 160 R0 SYMATTR InstName C1 SYMATTR Value 10n SYMBOL res 1040 144 R0 SYMATTR InstName R3 SYMATTR Value 100 SYMBOL ind 1120 160 R0 SYMATTR InstName L1 SYMATTR Value 30µ SYMBOL res 1088 256 R0 SYMATTR InstName R4 SYMATTR Value 1 SYMBOL res 320 16 R0 SYMATTR InstName R5 SYMATTR Value 150k SYMBOL res 336 112 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 10k SYMBOL cap 288 32 R0 SYMATTR InstName C2 SYMATTR Value 10p SYMBOL cap 944 176 R0 SYMATTR InstName C3 SYMATTR Value 100n TEXT -68 376 Left 2 !.tran 0 10m 100n 100n TEXT 2424 -336 Left 2 !.MODEL Qbd139 npn\n+IS=1e-09 BF=222.664 NF=0.85 VAF=36.4079\n+IKF=0.166126 ISE=5.03418e-09 NE=1.45313 BR=1.35467\n+NR=1.33751 VAR=142.931 IKR=1.66126 ISC=5.02557e-09\n+NC=3.10227 RB=26.9143 IRB=0.1 RBM=0.1\n+RE=0.000472454 RC=1.04109 XTB=0.727762 XTI=1.04311\n+EG=1.05 CJE=1e-11 VJE=0.75 MJE=0.33\n+TF=1e-09 XTF=1 VTF=10 ITF=0.01\n+CJC=1e-11 VJC=0.75 MJC=0.33 XCJC=0.9\n+FC=0.5 CJS=0 VJS=0.75 MJS=0.5\n+TR=1e-07 PTF=0 KF=0 AF=1\n* Model generated on Feb 14, 2004\n* Model format: PSpice TEXT 2432 72 Left 2 !.MODEL Qbd140 pnp\n+IS=1e-09 BF=650.842 NF=0.85 VAF=10\n+IKF=0.0950125 ISE=1e-08 NE=1.54571 BR=56.177\n+NR=1.5 VAR=2.11267 IKR=0.950125 ISC=1e-08\n+NC=3.58527 RB=41.7566 IRB=0.1 RBM=0.108893\n+RE=0.000347052 RC=1.32566 XTB=19.5239 XTI=1\n+EG=1.05 CJE=1e-11 VJE=0.75 MJE=0.33\n+TF=1e-09 XTF=1 VTF=10 ITF=0.01\n+CJC=1e-11 VJC=0.75 MJC=0.33 XCJC=0.9\n+FC=0.5 CJS=0 VJS=0.75 MJS=0.5\n+TR=1e-07 PTF=0 KF=0 AF=1\n* Model generated on Feb 14, 2004\n* Model format: PSpice TEXT 1624 -352 Left 2 !.MODEL mj21195 pnp\n+IS=1.07772e-10 BF=221.467 NF=1.13339 VAF=1000\n+IKF=4.43562 ISE=3.64015e-10 NE=1.71124 BR=0.100011\n+NR=1.48497 VAR=2.1141 IKR=44.3562 ISC=3.14649e-13\n+NC=3.17097 RB=3.18766 IRB=0.167048 RBM=0.1\n+RE=0.0159182 RC=0.0795912 XTB=0.1 XTI=1\n+EG=1.05 CJE=8.75501e-09 VJE=0.99 MJE=0.417932\n+TF=1e-08 XTF=164.367 VTF=0.678119 ITF=0.00142259\n+CJC=1.07016e-09 VJC=0.967664 MJC=0.437073 XCJC=1\n+FC=0.8 CJS=0 VJS=0.75 MJS=0.5\n+TR=1e-07 PTF=0 KF=0 AF=1 TEXT 1632 80 Left 2 !.MODEL Qmjl21196 npn\n+IS=9.91162e-11 BF=72.017 NF=1.14361 VAF=25.2734\n+IKF=9.99333 ISE=7.00002e-12 NE=3.375 BR=4.98511\n+NR=1.21116 VAR=6.29246 IKR=4.50711 ISC=3.25e-13\n+NC=4 RB=9.33972 IRB=0.1 RBM=0.1\n+RE=0.000642966 RC=0.0378089 XTB=0.1047 XTI=1.03131\n+EG=1.11401 CJE=1.38873e-08 VJE=0.4 MJE=0.436413\n+TF=1e-08 XTF=50.3784 VTF=3.13272 ITF=2.83908\n+CJC=5e-10 VJC=0.95 MJC=0.23891 XCJC=0.800721\n+FC=0.8 CJS=0 VJS=0.75 MJS=0.5\n+TR=1e-07 PTF=0 KF=0 AF=1\n* Model generated on Jan 25, 2004\n* Model format: PSpice