* SPICE netlist
Q4 N010 In+ N011 0 BC557B
Q5 N015 In- N012 0 BC557B
R4 V+ N002 680
R9 N014 N016 8k
R10 N016 OUT 120
Q2 V- N014 N016 0 NPN
Q3 V- N016 OUT 0 NPN
R11 N001 N003 8k
R12 N003 OUT 120
Q6 V+ N003 OUT 0 PNP
Q7 V+ N001 N003 0 PNP
Q1 V+ N010 N013 0 BC547C
C1 N009 N010 10p
R13 N008 N011 56
R14 N008 N012 56
R16 N017 V- 56
Q8 N010 N015 V- 0 BC547C
Q9 N015 N015 V- 0 BC547C
D6 N004 V+ 1N750
R1 N004 0 1.5k
Q10 N008 N004 N005 0 BC557B
R2 V+ N005 1k
Q11 N006 N004 N002 0 BC557B
Q12 N006 N007 N009 0 TIP31C
R3 N006 N007 3.6k
R5 N007 N009 1.5k
Q13 N009 N013 N017 0 BC547C
R6 N013 V- 510
Q14 N010 N017 V- 0 BC547C
Q15 N001 N006 OUT 0 BD135
Q18 N014 N009 OUT 0 BD140
R17 V+ N001 100
R15 N014 V- 100
.inc PowerTransistor.lib

* LTspice schematic (.asc)
Version 4.1
SHEET 1 1104 848
WIRE -520 -424 -536 -424
WIRE -408 -424 -520 -424
WIRE -136 -424 -408 -424
WIRE 200 -424 -136 -424
WIRE 376 -424 200 -424
WIRE 456 -424 376 -424
WIRE -408 -408 -408 -424
WIRE -136 -408 -136 -424
WIRE -520 -392 -520 -424
WIRE 200 -392 200 -424
WIRE 312 -376 296 -376
WIRE 456 -360 456 -424
WIRE -136 -312 -136 -328
WIRE 376 -312 376 -328
WIRE 392 -312 376 -312
WIRE 200 -280 200 -312
WIRE 296 -280 296 -376
WIRE 296 -280 200 -280
WIRE -200 -264 -472 -264
WIRE 200 -248 200 -280
WIRE 296 -232 296 -280
WIRE 376 -232 376 -312
WIRE 456 -232 456 -264
WIRE -408 -216 -408 -328
WIRE -136 -200 -136 -216
WIRE -136 -200 -232 -200
WIRE 136 -200 -136 -200
WIRE -520 -168 -520 -328
WIRE -472 -168 -472 -264
WIRE -472 -168 -520 -168
WIRE -520 -152 -520 -168
WIRE -136 -152 -136 -200
WIRE 200 -136 200 -152
WIRE 456 -136 456 -232
WIRE 456 -136 200 -136
WIRE -232 -104 -232 -120
WIRE -200 -104 -232 -104
WIRE -232 -88 -232 -104
WIRE -520 -56 -520 -72
WIRE -408 -24 -408 -120
WIRE -408 -24 -488 -24
WIRE -344 -24 -408 -24
WIRE 456 -24 456 -136
WIRE 552 -24 456 -24
WIRE -136 -8 -136 -56
WIRE -136 -8 -232 -8
WIRE -488 8 -488 -24
WIRE -344 8 -344 -24
WIRE -200 40 -216 40
WIRE -136 40 -136 -8
WIRE -56 40 -136 40
WIRE -120 88 -136 88
WIRE 456 88 456 -24
WIRE 456 88 200 88
WIRE 200 104 200 88
WIRE -216 136 -216 40
WIRE -200 136 -216 136
WIRE -488 152 -488 88
WIRE -344 152 -344 88
WIRE -56 152 -56 40
WIRE 136 152 -56 152
WIRE -136 200 -136 184
WIRE -120 200 -136 200
WIRE -136 232 -136 200
WIRE 456 232 456 88
WIRE 456 264 456 232
WIRE -488 280 -488 248
WIRE -216 280 -216 136
WIRE -216 280 -488 280
WIRE 200 280 200 200
WIRE 296 280 296 232
WIRE 296 280 200 280
WIRE -344 296 -344 248
WIRE -344 296 -408 296
WIRE -216 296 -216 280
WIRE -488 312 -488 280
WIRE -344 312 -344 296
WIRE 376 312 376 232
WIRE 392 312 376 312
WIRE 200 328 200 280
WIRE 376 328 376 312
WIRE -56 344 -56 248
WIRE -56 344 -152 344
WIRE -408 360 -408 296
WIRE -408 360 -424 360
WIRE 296 376 296 280
WIRE 312 376 296 376
WIRE -488 424 -488 408
WIRE -488 424 -504 424
WIRE -344 424 -344 408
WIRE -344 424 -488 424
WIRE -216 424 -216 392
WIRE -216 424 -344 424
WIRE -136 424 -136 312
WIRE -136 424 -216 424
WIRE -56 424 -136 424
WIRE 200 424 200 408
WIRE 200 424 -56 424
WIRE 376 424 200 424
WIRE 456 424 456 360
WIRE 456 424 376 424
FLAG -536 -424 V+
IOPIN -80 -464 In
FLAG -504 424 V-
IOPIN -48 384 In
FLAG -552 200 In+
IOPIN -96 160 In
FLAG -280 200 In-
IOPIN 176 160 In
FLAG 552 -24 OUT
IOPIN 1008 -64 Out
FLAG -520 -56 0
FLAG -120 88 V+
IOPIN 336 48 In
SYMBOL pnp -552 248 M180
SYMATTR Value BC557B
SYMATTR InstName Q4
SYMBOL pnp -280 248 R180
SYMATTR Value BC557B
SYMATTR InstName Q5
SYMBOL res -152 -424 R0
SYMATTR InstName R4
SYMATTR Value 680
SYMBOL res 280 216 M90
SYMATTR InstName R9
SYMATTR Value 8k
SYMBOL res 360 216 M90
SYMATTR InstName R10
SYMATTR Value 120
SYMBOL npn 312 424 M180
SYMATTR InstName Q2
SYMBOL npn 392 360 M180
SYMATTR InstName Q3
SYMBOL res 280 -216 R270
SYMATTR InstName R11
SYMATTR Value 8k
SYMBOL res 360 -216 R270
SYMATTR InstName R12
SYMATTR Value 120
SYMBOL pnp 392 -360 R0
SYMATTR InstName Q6
SYMBOL pnp 312 -424 R0
SYMATTR InstName Q7
SYMBOL npn -200 88 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL cap -136 24 R90
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL res -504 -8 R0
SYMATTR InstName R13
SYMATTR Value 56
SYMBOL res -360 -8 R0
SYMATTR InstName R14
SYMATTR Value 56
SYMBOL res -72 328 R0
SYMATTR InstName R16
SYMATTR Value 56
SYMBOL npn -424 312 M0
SYMATTR InstName Q8
SYMATTR Value BC547C
SYMBOL npn -408 312 R0
SYMATTR InstName Q9
SYMATTR Value BC547C
SYMBOL diode -504 -328 R180
SYMATTR InstName D6
SYMATTR Value 1N750
SYMBOL res -536 -168 R0
SYMATTR InstName R1
SYMATTR Value 1.5k
SYMBOL pnp -472 -120 M180
SYMATTR Value BC557B
SYMATTR InstName Q10
SYMBOL res -424 -424 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL pnp -200 -216 M180
SYMATTR Value BC557B
SYMATTR InstName Q11
SYMBOL npn -200 -152 R0
SYMATTR InstName Q12
SYMATTR Value TIP31C
SYMBOL res -248 -216 R0
SYMATTR InstName R3
SYMATTR Value 3.6k
SYMBOL res -248 -104 R0
SYMATTR InstName R5
SYMATTR Value 1.5k
SYMBOL npn -120 152 R0
SYMATTR InstName Q13
SYMATTR Value BC547C
SYMBOL res -152 216 R0
SYMATTR InstName R6
SYMATTR Value 510
SYMBOL npn -152 296 M0
SYMATTR InstName Q14
SYMATTR Value BC547C
SYMBOL npn 136 -248 R0
SYMATTR InstName Q15
SYMATTR Value BD135
SYMBOL pnp 136 200 M180
SYMATTR Value BD140
SYMATTR InstName Q18
SYMBOL res 184 -408 R0
SYMATTR InstName R17
SYMATTR Value 100
SYMBOL res 184 312 R0
SYMATTR InstName R15
SYMATTR Value 100