* SPICE netlist
Q1 N008 N006 N002 0 2N3906
Q3 N006 N002 VCC 0 2N3906
R6 VCC N002 1k
V1 VCC 0 6
R8 N006 VEE 20k
Q5 N003 N008 PRIM1 0 2N3904
Q6 N017 N014 PRIM1 0 2N3906
VIN1 N011 0 PULSE(0 3.3 0 100n 100n 0.2ms 0.4ms 14)
R14 N011 N012 5k
D1 N008 N010 D
D2 N010 N014 D
C1 PRIM1 N012 3n
R3 VCC N003 270
R4 N017 VEE 270
Q10 PRIM1 N003 VCC 0 MJE15035
Q11 PRIM1 N017 VEE 0 MJE15034
XU1 N016 N012 VCC VEE N014 LT1006 ;pnba In+)In-)V+)V-)OUT
Q2 N009 N007 N005 0 2N3906
Q4 N007 N005 VCC 0 2N3906
R1 VCC N005 1k
R2 N007 VEE 20k
Q7 N004 N009 PRIM2 0 2N3904
Q8 N018 N015 PRIM2 0 2N3906
R10 PRIM2 N013 5k
D3 N009 P001 D
D4 P001 N015 D
R13 VCC N004 270
R15 N018 VEE 270
Q9 PRIM2 N004 VCC 0 MJE15035
Q12 PRIM2 N018 VEE 0 MJE15034
R16 N001 0 100R
XU2 0 N013 VCC VEE N015 LT1006 ;pnba In+)In-)V+)V-)OUT
R17 N013 PRIM1 5k
L1 PRIM2 PRIM1 1m
L2 0 N001 8m
V2 0 VEE 6
VIN2 N016 0 1.6
.tran 6ms
.include standard.bjt
K L1 L2 0.99

* LTspice schematic (.asc)
Version 4
SHEET 1 2384 1024
WIRE -936 -416 -1080 -416
WIRE 1176 -336 952 -336
WIRE -536 -320 -712 -320
WIRE -472 -320 -536 -320
WIRE -344 -320 -472 -320
WIRE -200 -320 -344 -320
WIRE 328 -320 184 -320
WIRE 424 -320 328 -320
WIRE 520 -320 424 -320
WIRE 696 -320 520 -320
WIRE -712 -288 -712 -320
WIRE -200 -288 -200 -320
WIRE 184 -288 184 -320
WIRE 696 -288 696 -320
WIRE 952 -288 952 -336
WIRE 1176 -288 1176 -336
WIRE -536 -240 -648 -240
WIRE -264 -240 -344 -240
WIRE 328 -240 248 -240
WIRE 632 -240 520 -240
WIRE -600 -192 -712 -192
WIRE 696 -192 584 -192
WIRE 952 -144 952 -208
WIRE 1176 -144 1176 -208
WIRE 1176 -144 952 -144
WIRE -344 -80 -344 -240
WIRE 328 -80 328 -240
WIRE 1176 -64 1176 -144
WIRE -536 -32 -536 -144
WIRE -408 -32 -536 -32
WIRE 520 -32 520 -144
WIRE 520 -32 392 -32
WIRE -200 16 -200 -192
WIRE -200 16 -344 16
WIRE 184 16 184 -192
WIRE 328 16 184 16
WIRE -536 48 -536 32
WIRE -200 96 -200 16
WIRE -88 96 -200 96
WIRE -40 96 -88 96
WIRE 120 96 40 96
WIRE 184 96 184 16
WIRE 184 96 120 96
WIRE -1080 160 -1192 160
WIRE -984 160 -1000 160
WIRE -920 160 -984 160
WIRE -824 160 -824 112
WIRE -824 160 -856 160
WIRE -792 160 -824 160
WIRE 680 160 664 160
WIRE 808 160 760 160
WIRE 856 160 808 160
WIRE -200 240 -200 96
WIRE -200 240 -344 240
WIRE 184 240 184 96
WIRE 328 240 184 240
WIRE -984 272 -984 160
WIRE -952 272 -984 272
WIRE 808 272 808 160
WIRE 808 272 776 272
WIRE -536 288 -536 112
WIRE -536 288 -888 288
WIRE -440 288 -536 288
WIRE -408 288 -440 288
WIRE 424 288 392 288
WIRE 520 288 520 96
WIRE 520 288 424 288
WIRE 712 288 520 288
WIRE -952 304 -984 304
WIRE 888 304 776 304
WIRE -984 352 -984 304
WIRE -440 368 -440 288
WIRE 424 368 424 288
WIRE -200 384 -200 240
WIRE 184 384 184 240
WIRE -344 432 -344 336
WIRE -344 432 -440 432
WIRE -264 432 -344 432
WIRE 328 432 328 336
WIRE 328 432 248 432
WIRE 424 432 328 432
WIRE -488 512 -536 512
WIRE -344 512 -488 512
WIRE -200 512 -200 480
WIRE -200 512 -344 512
WIRE 184 512 184 480
WIRE 328 512 184 512
WIRE 456 512 328 512
WIRE 568 512 456 512
FLAG -1080 -496 VCC
FLAG -88 96 PRIM1
FLAG -1192 240 0
FLAG -472 -320 VCC
FLAG -792 160 PRIM1
FLAG -936 -416 0
FLAG -984 432 0
FLAG -920 256 VCC
FLAG 120 96 PRIM2
FLAG 424 -320 VCC
FLAG 744 256 VCC
FLAG 888 304 0
FLAG 1176 -64 0
FLAG -1080 -336 VEE
FLAG -488 512 VEE
FLAG 456 512 VEE
FLAG -920 320 VEE
FLAG 744 320 VEE
FLAG -712 -112 VEE
FLAG 696 -112 VEE
FLAG 664 160 PRIM1
FLAG 936 160 PRIM2
SYMBOL pnp -600 -144 M180
SYMATTR InstName Q1
SYMATTR Value 2N3906
SYMBOL pnp -648 -192 R180
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL res -520 -336 M0
SYMATTR InstName R6
SYMATTR Value 1k
SYMBOL voltage -1080 -512 R0
SYMATTR Value 6
SYMATTR InstName V1
SYMBOL res -696 -208 M0
SYMATTR InstName R8
SYMATTR Value 20k
SYMBOL npn -408 -80 R0
SYMATTR InstName Q5
SYMATTR Value 2N3904
SYMBOL pnp -408 336 M180
SYMATTR InstName Q6
SYMATTR Value 2N3906
SYMBOL voltage -1192 144 R0
SYMATTR Value PULSE(0 3.3 0 100n 100n 0.2ms 0.4ms 14)
SYMATTR InstName VIN1
SYMBOL res -1096 176 R270
SYMATTR InstName R14
SYMATTR Value 5k
SYMBOL diode -552 -32 R0
SYMATTR InstName D1
SYMBOL diode -552 48 R0
SYMATTR InstName D2
SYMBOL cap -856 144 R90
SYMATTR InstName C1
SYMATTR Value 3n
SYMBOL res -360 -336 R0
SYMATTR InstName R3
SYMATTR Value 270
SYMBOL res -360 416 R0
SYMATTR InstName R4
SYMATTR Value 270
SYMBOL pnp -264 -192 M180
SYMATTR InstName Q10
SYMATTR Value MJE15035
SYMBOL npn -264 384 R0
SYMATTR InstName Q11
SYMATTR Value MJE15034
SYMBOL OpAmps\\LT1006 -920 224 R0
SYMATTR InstName U1
SYMBOL pnp 584 -144 R180
SYMATTR InstName Q2
SYMATTR Value 2N3906
SYMBOL pnp 632 -192 M180
SYMATTR InstName Q4
SYMATTR Value 2N3906
SYMBOL res 504 -336 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 680 -208 R0
SYMATTR InstName R2
SYMATTR Value 20k
SYMBOL npn 392 -80 M0
SYMATTR InstName Q7
SYMATTR Value 2N3904
SYMBOL pnp 392 336 R180
SYMATTR InstName Q8
SYMATTR Value 2N3906
SYMBOL res 952 176 M270
SYMATTR InstName R10
SYMATTR Value 5k
SYMBOL diode 536 -32 M0
SYMATTR InstName D3
SYMBOL diode 536 32 M0
SYMATTR InstName D4
SYMBOL res 344 -336 M0
SYMATTR InstName R13
SYMATTR Value 270
SYMBOL res 344 416 M0
SYMATTR InstName R15
SYMATTR Value 270
SYMBOL pnp 248 -192 R180
SYMATTR InstName Q9
SYMATTR Value MJE15035
SYMBOL npn 248 384 M0
SYMATTR InstName Q12
SYMATTR Value MJE15034
SYMBOL res 1192 -304 M0
SYMATTR InstName R16
SYMATTR Value 100R
SYMBOL OpAmps\\LT1006 744 224 M0
SYMATTR InstName U2
SYMBOL res 776 176 M270
SYMATTR InstName R17
SYMATTR Value 5k
SYMBOL ind2 56 80 R90
SYMATTR InstName L1
SYMATTR Value 1m
SYMATTR Type ind
SYMBOL ind2 968 -192 R180
SYMATTR InstName L2
SYMATTR Value 8m
SYMATTR Type ind
SYMBOL voltage -1080 -432 R0
SYMATTR Value 6
SYMATTR InstName V2
SYMBOL voltage -984 336 R0
SYMATTR Value 1.6
SYMATTR InstName VIN2