* SPICE netlist
Q4 N011 In+ N013 0 BC557B
Q5 N016 In- N014 0 BC557B
R4 V+ N003 680
R9 N017 N018 8k
R10 N018 N012 120
Q2 V+ N001 N004 0 NPN
Q3 V+ N004 N006 0 NPN
R11 N001 N004 8k
R12 N004 N006 120
Q6 V- N018 N012 0 PNP
Q7 V- N017 N018 0 PNP
Q1 V+ N011 N015 0 BC547C
C1 N010 N011 10p
R13 N009 N013 56
R14 N009 N014 56
R16 N019 V- 56
Q8 N011 N016 V- 0 BC547C
Q9 N016 N016 V- 0 BC547C
D6 N005 V+ 1N750
R1 N005 0 1.5k
Q10 N009 N005 N007 0 BC557B
R2 V+ N007 1k
Q11 N002 N005 N003 0 BC557B
Q12 N002 N008 N010 0 TIP31C
R3 N002 N008 3.6k
R5 N008 N010 1.5k
Q13 N010 N015 N019 0 BC547C
R6 N015 V- 510
Q14 N011 N019 V- 0 BC547C
Q15 V+ N002 N001 0 BD135
R7 N006 OUT 0.22
R8 OUT N012 0.22
Q16 N002 N006 OUT 0 BC547C
Q17 N010 N012 OUT 0 BC557B
Q18 V- N010 N017 0 BD140
R15 N001 N017 220
.inc PowerTransistor.lib

* LTspice schematic (.asc)
Version 4.1
SHEET 1 1008 848
WIRE -472 -424 -488 -424
WIRE -360 -424 -472 -424
WIRE -88 -424 -360 -424
WIRE 200 -424 -88 -424
WIRE 328 -424 200 -424
WIRE 408 -424 328 -424
WIRE -360 -408 -360 -424
WIRE -88 -408 -88 -424
WIRE 200 -408 200 -424
WIRE -472 -392 -472 -424
WIRE 264 -376 248 -376
WIRE 136 -360 88 -360
WIRE 408 -360 408 -424
WIRE -88 -312 -88 -328
WIRE 328 -312 328 -328
WIRE 344 -312 328 -312
WIRE 200 -296 200 -312
WIRE 248 -296 248 -376
WIRE 248 -296 200 -296
WIRE -152 -264 -424 -264
WIRE 248 -232 248 -296
WIRE 328 -232 328 -312
WIRE 408 -232 408 -264
WIRE -360 -216 -360 -328
WIRE -88 -200 -88 -216
WIRE -88 -200 -184 -200
WIRE 88 -200 88 -360
WIRE 88 -200 -88 -200
WIRE -472 -168 -472 -328
WIRE -424 -168 -424 -264
WIRE -424 -168 -472 -168
WIRE 88 -168 88 -200
WIRE -472 -152 -472 -168
WIRE -88 -152 -88 -200
WIRE 408 -120 408 -232
WIRE 408 -120 152 -120
WIRE -184 -104 -184 -120
WIRE -152 -104 -184 -104
WIRE -184 -88 -184 -104
WIRE -472 -56 -472 -72
WIRE -360 -24 -360 -120
WIRE -360 -24 -440 -24
WIRE -296 -24 -360 -24
WIRE 88 -24 88 -72
WIRE 408 -24 408 -40
WIRE 408 -24 88 -24
WIRE 504 -24 408 -24
WIRE -88 -8 -88 -56
WIRE -88 -8 -184 -8
WIRE 408 -8 408 -24
WIRE -440 8 -440 -24
WIRE -296 8 -296 -24
WIRE 88 24 88 -24
WIRE -152 40 -168 40
WIRE -88 40 -88 -8
WIRE -8 40 -88 40
WIRE 408 72 152 72
WIRE -72 88 -88 88
WIRE 200 88 200 -296
WIRE -168 136 -168 40
WIRE -152 136 -168 136
WIRE -8 136 -8 40
WIRE 88 136 88 120
WIRE 88 136 -8 136
WIRE -440 152 -440 88
WIRE -296 152 -296 88
WIRE -8 152 -8 136
WIRE -88 200 -88 184
WIRE -72 200 -88 200
WIRE -88 232 -88 200
WIRE 408 232 408 72
WIRE 408 264 408 232
WIRE -440 280 -440 248
WIRE -168 280 -168 136
WIRE -168 280 -440 280
WIRE -296 296 -296 248
WIRE -296 296 -360 296
WIRE -168 296 -168 280
WIRE 200 296 200 168
WIRE 200 296 168 296
WIRE 248 296 248 232
WIRE 248 296 200 296
WIRE -440 312 -440 280
WIRE -296 312 -296 296
WIRE 168 312 168 296
WIRE 328 312 328 232
WIRE 344 312 328 312
WIRE 328 328 328 312
WIRE -8 344 -8 248
WIRE -8 344 -104 344
WIRE -360 360 -360 296
WIRE -360 360 -376 360
WIRE 88 360 88 136
WIRE 104 360 88 360
WIRE 248 376 248 296
WIRE 264 376 248 376
WIRE -440 424 -440 408
WIRE -440 424 -456 424
WIRE -296 424 -296 408
WIRE -296 424 -440 424
WIRE -168 424 -168 392
WIRE -168 424 -296 424
WIRE -88 424 -88 312
WIRE -88 424 -168 424
WIRE -8 424 -88 424
WIRE 168 424 168 408
WIRE 168 424 -8 424
WIRE 328 424 168 424
WIRE 408 424 408 360
WIRE 408 424 328 424
FLAG -488 -424 V+
IOPIN -80 -464 In
FLAG -456 424 V-
IOPIN -48 384 In
FLAG -504 200 In+
IOPIN -96 160 In
FLAG -232 200 In-
IOPIN 176 160 In
FLAG 504 -24 OUT
IOPIN 912 -64 Out
FLAG -472 -56 0
FLAG -72 88 V+
IOPIN 336 48 In
SYMBOL pnp -504 248 M180
SYMATTR Value BC557B
SYMATTR InstName Q4
SYMBOL pnp -232 248 R180
SYMATTR Value BC557B
SYMATTR InstName Q5
SYMBOL res -104 -424 R0
SYMATTR InstName R4
SYMATTR Value 680
SYMBOL res 232 216 M90
SYMATTR InstName R9
SYMATTR Value 8k
SYMBOL res 312 216 M90
SYMATTR InstName R10
SYMATTR Value 120
SYMBOL npn 264 -424 R0
SYMATTR InstName Q2
SYMBOL npn 344 -360 R0
SYMATTR InstName Q3
SYMBOL res 232 -216 R270
SYMATTR InstName R11
SYMATTR Value 8k
SYMBOL res 312 -216 R270
SYMATTR InstName R12
SYMATTR Value 120
SYMBOL pnp 344 360 M180
SYMATTR InstName Q6
SYMBOL pnp 264 424 M180
SYMATTR InstName Q7
SYMBOL npn -152 88 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL cap -88 24 R90
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL res -456 -8 R0
SYMATTR InstName R13
SYMATTR Value 56
SYMBOL res -312 -8 R0
SYMATTR InstName R14
SYMATTR Value 56
SYMBOL res -24 328 R0
SYMATTR InstName R16
SYMATTR Value 56
SYMBOL npn -376 312 M0
SYMATTR InstName Q8
SYMATTR Value BC547C
SYMBOL npn -360 312 R0
SYMATTR InstName Q9
SYMATTR Value BC547C
SYMBOL diode -456 -328 R180
SYMATTR InstName D6
SYMATTR Value 1N750
SYMBOL res -488 -168 R0
SYMATTR InstName R1
SYMATTR Value 1.5k
SYMBOL pnp -424 -120 M180
SYMATTR Value BC557B
SYMATTR InstName Q10
SYMBOL res -376 -424 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL pnp -152 -216 M180
SYMATTR Value BC557B
SYMATTR InstName Q11
SYMBOL npn -152 -152 R0
SYMATTR InstName Q12
SYMATTR Value TIP31C
SYMBOL res -200 -216 R0
SYMATTR InstName R3
SYMATTR Value 3.6k
SYMBOL res -200 -104 R0
SYMATTR InstName R5
SYMATTR Value 1.5k
SYMBOL npn -72 152 R0
SYMATTR InstName Q13
SYMATTR Value BC547C
SYMBOL res -104 216 R0
SYMATTR InstName R6
SYMATTR Value 510
SYMBOL npn -104 296 M0
SYMATTR InstName Q14
SYMATTR Value BC547C
SYMBOL npn 136 -408 R0
SYMATTR InstName Q15
SYMATTR Value BD135
SYMBOL res 392 -136 R0
SYMATTR InstName R7
SYMATTR Value 0.22
SYMBOL res 392 -24 R0
SYMATTR InstName R8
SYMATTR Value 0.22
SYMBOL npn 152 -168 M0
SYMATTR InstName Q16
SYMATTR Value BC547C
SYMBOL pnp 152 120 R180
SYMATTR Value BC557B
SYMATTR InstName Q17
SYMBOL pnp 104 408 M180
SYMATTR Value BD140
SYMATTR InstName Q18
SYMBOL res 184 72 R0
SYMATTR InstName R15
SYMATTR Value 220