* SPICE netlist
V1 +30V 0 30
V2 N005 0 SINE(15 11 1000) AC 10
Q1 +30V N003 N007 0 2TIP41C
Q2 0 N013 N011 0 2TIP42C
R1 N009 N011 0.1
R2 N007 N009 0.1
R5 N010 N009 27
V3 N006 0 15
Q3 0 N005 N003 0 22N3906
Q4 +30V N005 N013 0 22N3904
Qpnp-amp N003 N001 +30V 0 22N3906
Qnpn-amp N013 N015 0 0 22N3904
R3 N015 +30V 1220k
R4 N001 0 1100k
Q7 +30V N004 N008 0 2TIP41C
Q8 0 N014 N012 0 2TIP42C
R6 N010 N012 0.1
R7 N008 N010 0.1
Q9 0 N006 N004 0 22N3906
Q10 +30V N006 N014 0 22N3904
Qpnp-vgnd N004 N002 +30V 0 22N3906
Qnpn-vgnd N014 N016 0 0 22N3904
R8 N016 +30V 1220k
R9 N002 0 1100k
.tran 0 0.006 0.001 0.00000008
.step temp 25 125 50

* LTspice schematic (.asc)
Version 4.1
SHEET 1 1824 976
WIRE -256 -488 -288 -488
WIRE -144 -488 -176 -488
WIRE 448 -376 -64 -376
WIRE -64 -312 -64 -376
WIRE -64 -312 -176 -312
WIRE -32 -312 -64 -312
WIRE 448 -312 448 -376
WIRE 448 -312 416 -312
WIRE 560 -312 448 -312
WIRE -240 -264 -256 -264
WIRE -64 -264 -64 -312
WIRE 448 -264 448 -312
WIRE 640 -264 624 -264
WIRE -176 -216 -224 -216
WIRE -128 -216 -176 -216
WIRE 560 -216 512 -216
WIRE 608 -216 560 -216
WIRE -288 -168 -352 -168
WIRE 736 -168 672 -168
WIRE -64 -152 -64 -168
WIRE 448 -152 448 -168
WIRE -336 -120 -336 -264
WIRE -224 -120 -336 -120
WIRE -192 -120 -224 -120
WIRE 608 -120 576 -120
WIRE 720 -120 720 -264
WIRE 720 -120 608 -120
WIRE -192 -104 -192 -120
WIRE 576 -104 576 -120
WIRE -352 56 -352 -168
WIRE -352 56 -912 56
WIRE 736 72 736 -168
WIRE 912 72 736 72
WIRE -64 88 -64 -72
WIRE 48 88 -64 88
WIRE 448 88 448 -72
WIRE 448 88 128 88
WIRE 912 152 912 72
WIRE -912 200 -912 56
WIRE -64 216 -64 88
WIRE 448 216 448 88
WIRE -224 264 -336 264
WIRE -192 264 -224 264
WIRE 608 264 576 264
WIRE 720 264 608 264
WIRE -352 312 -352 56
WIRE -288 312 -352 312
WIRE -64 312 -64 296
WIRE 448 312 448 296
WIRE 736 312 736 72
WIRE 736 312 672 312
WIRE -160 360 -224 360
WIRE -128 360 -160 360
WIRE 544 360 512 360
WIRE 608 360 544 360
WIRE -336 408 -336 264
WIRE -320 408 -336 408
WIRE -224 408 -240 408
WIRE 624 408 608 408
WIRE 720 408 720 264
WIRE 720 408 704 408
WIRE -912 456 -912 280
WIRE -160 456 -912 456
WIRE -64 456 -64 408
WIRE -64 456 -160 456
WIRE 448 456 448 408
WIRE 448 456 -64 456
WIRE 544 456 448 456
WIRE 912 456 912 232
WIRE 912 456 544 456
WIRE -64 488 -64 456
FLAG -64 488 0
FLAG -288 -488 0
FLAG -144 -488 +30V
IOPIN 848 -336 BiDir
FLAG -32 -312 +30V
IOPIN 960 -160 BiDir
FLAG -192 264 +30V
IOPIN 800 416 BiDir
FLAG -192 -104 0
FLAG 576 264 +30V
IOPIN 1568 416 BiDir
FLAG 576 -104 0
SYMBOL voltage -160 -488 R90
SYMATTR InstName V1
SYMATTR Value 30
SYMBOL voltage -912 184 R0
SYMATTR Value2 AC 10
SYMATTR InstName V2
SYMATTR Value SINE(15 11 1000)
SYMBOL npn -128 -264 R0
SYMATTR InstName Q1
SYMATTR Value 2TIP41C
SYMBOL pnp -128 408 M180
SYMATTR InstName Q2
SYMATTR Value 2TIP42C
SYMBOL res -80 200 R0
SYMATTR InstName R1
SYMATTR Value 0.1
SYMBOL res -80 -168 R0
SYMATTR InstName R2
SYMATTR Value 0.1
SYMBOL res 144 72 R90
SYMATTR InstName R5
SYMATTR Value 27
SYMBOL voltage 912 136 R0
SYMATTR InstName V3
SYMATTR Value 15
SYMBOL pnp -288 -120 M180
SYMATTR InstName Q3
SYMATTR Value 22N3906
SYMBOL npn -288 264 R0
SYMATTR InstName Q4
SYMATTR Value 22N3904
SYMBOL pnp -240 -216 M180
SYMATTR InstName Qpnp-amp
SYMATTR Value 22N3906
SYMBOL npn -224 360 R0
SYMATTR InstName Qnpn-amp
SYMATTR Value 22N3904
SYMBOL res -224 392 R90
SYMATTR InstName R3
SYMATTR Value 1220k
SYMBOL res -240 -280 R90
SYMATTR InstName R4
SYMATTR Value 1100k
SYMBOL npn 512 -264 M0
SYMATTR InstName Q7
SYMATTR Value 2TIP41C
SYMBOL pnp 512 408 R180
SYMATTR InstName Q8
SYMATTR Value 2TIP42C
SYMBOL res 464 200 M0
SYMATTR InstName R6
SYMATTR Value 0.1
SYMBOL res 464 -168 M0
SYMATTR InstName R7
SYMATTR Value 0.1
SYMBOL pnp 672 -120 R180
SYMATTR InstName Q9
SYMATTR Value 22N3906
SYMBOL npn 672 264 M0
SYMATTR InstName Q10
SYMATTR Value 22N3904
SYMBOL pnp 624 -216 R180
SYMATTR InstName Qpnp-vgnd
SYMATTR Value 22N3906
SYMBOL npn 608 360 M0
SYMATTR InstName Qnpn-vgnd
SYMATTR Value 22N3904
SYMBOL res 608 392 M90
SYMATTR InstName R8
SYMATTR Value 1220k
SYMBOL res 624 -280 M90
SYMATTR InstName R9
SYMATTR Value 1100k