Version 4
SHEET 1 1592 1120
WIRE 768 752 768 688
WIRE 128 624 160 624
WIRE 768 544 832 544
WIRE 832 544 832 912
WIRE 64 912 64 688
WIRE 608 752 608 784
WIRE 608 656 608 544
WIRE 608 544 768 544
WIRE 608 448 608 336
WIRE 608 336 688 336
WIRE 544 496 544 624
WIRE 64 912 832 912
WIRE 160 624 240 624
WIRE -112 656 -112 624
WIRE -112 624 0 624
WIRE 768 544 768 608
WIRE 1200 656 1200 592
WIRE 1200 448 1264 448
WIRE 1040 656 1040 688
WIRE 1040 560 1040 448
WIRE 1040 448 1200 448
WIRE 1040 352 1040 240
WIRE 1040 240 1120 240
WIRE 976 400 976 608
WIRE 1200 448 1200 512
WIRE 896 400 976 400
WIRE 896 400 896 96
WIRE 480 128 480 96
WIRE 480 96 896 96
WIRE 512 624 544 624
WIRE 544 624 544 704
WIRE 336 624 416 624
WIRE 416 624 432 624
FLAG -112 736 0
FLAG 768 752 0
FLAG 688 416 0
FLAG 608 864 0
FLAG 832 544 Vs_bf
FLAG 160 624 Vepsilon
FLAG 416 624 Vbase_bf
FLAG 1200 656 0
FLAG 1120 320 0
FLAG 1040 768 0
FLAG 1264 448 Vsbo
FLAG 896 400 Vbase_bo
FLAG 480 208 0
SYMBOL res 784 704 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R1
SYMATTR Value 10
SYMBOL voltage -112 640 R0
WINDOW 123 -31 163 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -34 134 Left 0
SYMATTR Value2 AC 1
SYMATTR Value SINE(0 1 1K 1n 1n 200m)
SYMATTR InstName V1
SYMBOL SP_symb\\integ 288 624 R0
WINDOW 39 -80 12 Left 0
SYMATTR SpiceLine wo=60e6
SYMATTR InstName U1
SYMBOL SP_symb\\diff1 112 576 R0
SYMATTR InstName U3
SYMBOL npn 544 448 R0
SYMATTR InstName Q1
SYMBOL pnp 544 752 M180
SYMATTR InstName Q2
SYMBOL voltage 688 320 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage 608 880 R180
WINDOW 0 24 104 Left 0
WINDOW 3 24 16 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL res 1216 608 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL npn 976 352 R0
SYMATTR InstName Q3
SYMBOL pnp 976 656 M180
SYMATTR InstName Q4
SYMBOL voltage 1120 224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 12
SYMBOL voltage 1040 784 R180
WINDOW 0 24 104 Left 0
WINDOW 3 24 16 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value 12
SYMBOL voltage 480 112 R0
WINDOW 123 -31 163 Left 0
WINDOW 39 0 0 Left 0
WINDOW 3 -34 134 Left 0
SYMATTR Value2 AC 1
SYMATTR Value SINE(0 1.9 1K 1n 1n 200m)
SYMATTR InstName V6
SYMBOL res 528 608 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R3
SYMATTR Value 100
TEXT 144 296 Left 0 !.include SP.lib
TEXT 144 336 Left 0 !.tran 0 1.5ms 0 1u