* SPICE netlist
XU1 N005 N001 N002 +12v -12v LT6202 ;pnba IN+)IN-)OUT)VCC)VEE
XU2 N002 N007 N006 +12v -12v LT6202 ;pnba IN+)IN-)OUT)VCC)VEE
R1 N002 N001 47k
R2 N001 N004 22k
R3 0 N005 6.8k
R4 0 N004 12k
R5 N010 0 4k7
R6 N011 0 18k
D1 N010 N007 D
D2 N007 N011 D
Q1 N003 N006 N007 0 NPN
Q2 N008 N009 -150v 0 NPN
Q4 N009 N009 -150v 0 NPN
Q5 N003 N003 +150v 0 PNP
Q6 N008 N003 +150v 0 PNP
Q7 N009 N006 N007 0 PNP
I1 0 N005 PULSE(612u 0 0 1n 1n 200u 1m 20)
V1 +12v 0 12
V4 0 -12v 12
V5 +150v 0 150
V6 0 -150v 150
R7 N008 0 60k
I2 0 N004 PULSE(0 612u 0 1n 1n 200u 1m 20)
.tran 0 1 0.01 0.001

* LTspice schematic (.asc)
Version 4
SHEET 1 1712 928
WIRE -776 -448 -776 -464
WIRE -568 -448 -568 -464
WIRE -776 -352 -776 -368
WIRE -776 -352 -856 -352
WIRE -568 -352 -568 -368
WIRE -568 -352 -648 -352
WIRE -856 -320 -856 -352
WIRE -776 -320 -776 -352
WIRE -648 -320 -648 -352
WIRE -568 -320 -568 -352
WIRE 536 -272 536 -304
WIRE 536 -272 408 -272
WIRE 664 -272 536 -272
WIRE 408 -224 408 -272
WIRE 664 -224 664 -272
WIRE -776 -208 -776 -240
WIRE -568 -208 -568 -240
WIRE -104 -192 -152 -192
WIRE 72 -192 -24 -192
WIRE 520 -176 472 -176
WIRE 600 -176 520 -176
WIRE 408 -96 408 -128
WIRE 520 -96 520 -176
WIRE 520 -96 408 -96
WIRE 408 -48 408 -96
WIRE -280 -32 -312 -32
WIRE -152 -32 -152 -192
WIRE -152 -32 -200 -32
WIRE -88 -32 -152 -32
WIRE -584 -16 -632 -16
WIRE -312 -16 -312 -32
WIRE -312 -16 -504 -16
WIRE 72 -16 72 -192
WIRE 72 -16 -24 -16
WIRE 168 -16 72 -16
WIRE -632 0 -632 -16
WIRE -88 0 -120 0
WIRE 296 0 232 0
WIRE 344 0 296 0
WIRE 168 16 120 16
WIRE -120 32 -120 0
WIRE -120 32 -200 32
WIRE -312 48 -312 -16
WIRE -120 48 -120 32
WIRE 664 64 664 -128
WIRE 856 64 664 64
WIRE 408 80 408 48
WIRE 408 80 248 80
WIRE 856 96 856 64
WIRE 408 112 408 80
WIRE 120 160 120 16
WIRE 120 160 -40 160
WIRE 136 160 120 160
WIRE 248 160 248 80
WIRE 248 160 136 160
WIRE 296 160 296 0
WIRE 344 160 296 160
WIRE -344 192 -392 192
WIRE -200 192 -200 32
WIRE -200 192 -264 192
WIRE -40 224 -40 160
WIRE 136 224 136 160
WIRE 408 224 408 208
WIRE 520 224 408 224
WIRE -392 240 -392 192
WIRE 408 272 408 224
WIRE 664 272 664 64
WIRE -40 304 -40 288
WIRE 136 304 136 288
WIRE 520 320 520 224
WIRE 520 320 472 320
WIRE 600 320 520 320
WIRE -40 416 -40 384
WIRE 40 416 -40 416
WIRE 136 416 136 384
WIRE 136 416 40 416
WIRE 408 432 408 368
WIRE 536 432 408 432
WIRE 664 432 664 368
WIRE 664 432 536 432
WIRE 40 448 40 416
WIRE 536 464 536 432
FLAG 40 448 0
FLAG -120 128 0
FLAG -312 128 0
FLAG -856 -320 0
FLAG -776 -464 +12v
FLAG -776 -208 -12v
FLAG -392 240 0
FLAG -648 -320 0
FLAG -568 -464 +150v
FLAG -568 -208 -150v
FLAG -56 -48 +12v
FLAG 200 32 +12v
FLAG 200 -32 -12v
FLAG -56 16 -12v
FLAG 536 -304 +150v
FLAG 536 464 -150v
FLAG 856 176 0
FLAG -632 0 0
SYMBOL OpAmps\\LT6203 -56 -16 R0
SYMATTR InstName U1
SYMBOL OpAmps\\LT6203 200 0 M180
SYMATTR InstName U2
SYMBOL res -8 -208 R90
SYMATTR InstName R1
SYMATTR Value 47k
SYMBOL res -184 -48 R90
SYMATTR InstName R2
SYMATTR Value 22k
SYMBOL res -104 144 R180
SYMATTR InstName R3
SYMATTR Value 6.8k
SYMBOL res -296 144 R180
SYMATTR InstName R4
SYMATTR Value 12k
SYMBOL res -56 288 R0
SYMATTR InstName R5
SYMATTR Value 4k7
SYMBOL res 120 288 R0
SYMATTR InstName R6
SYMATTR Value 18k
SYMBOL diode -24 288 R180
SYMATTR InstName D1
SYMBOL diode 120 224 R0
SYMATTR InstName D2
SYMBOL npn 344 -48 R0
SYMATTR InstName Q1
SYMBOL npn 600 272 R0
SYMATTR InstName Q2
SYMBOL npn 472 272 M0
SYMATTR InstName Q4
SYMBOL pnp 472 -128 R180
SYMATTR InstName Q5
SYMBOL pnp 600 -128 M180
SYMATTR InstName Q6
SYMBOL pnp 344 208 M180
SYMATTR InstName Q7
SYMBOL current -344 192 R270
SYMATTR InstName I1
SYMATTR Value PULSE(612u 0 0 1n 1n 200u 1m 20)
SYMBOL voltage -776 -464 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage -776 -336 R0
SYMATTR InstName V4
SYMATTR Value 12
SYMBOL voltage -568 -464 R0
SYMATTR InstName V5
SYMATTR Value 150
SYMBOL voltage -568 -336 R0
SYMATTR InstName V6
SYMATTR Value 150
SYMBOL res 840 80 R0
SYMATTR InstName R7
SYMATTR Value 60k
SYMBOL current -584 -16 R270
SYMATTR InstName I2
SYMATTR Value PULSE(0 612u 0 1n 1n 200u 1m 20)