* SPICE netlist
Q5 N001 N006 N007 0 2N3904
Q7 N001 N007 OUT 0 2N2219A
Q8 OUT N013 N014 0 2N2219A
Q6 N013 N012 OUT 0 2N3906
V1 N001 0 10
V2 N014 0 -10
R11 N012 N014 5K
R14 OUT 0 8
R9 N006 N008 2K
R10 N008 N012 1K
Q4 N006 N008 N012 0 2N3904
Q1 N002 N009 N011 0 2N3904
Q2 N001 N010 N011 0 2N3904
R2 N001 N002 200
R3 N011 N014 1K
Q3 N006 N005 N004 0 2N3906
R6 N010 0 5K
R7 OUT N010 50K
R1 N009 0 5K
R8 N001 N004 100
R4 N003 N002 9K
C2 N006 N005 100p
C1 N003 N002 10p
R13 N013 N014 1K
R12 N007 OUT 1K
C3 N006 N012 .001
R5 N005 N003 1K
.op

* LTspice schematic (.asc)
Version 4
SHEET 1 1776 912
WIRE -424 -456 -648 -456
WIRE 24 -456 -424 -456
WIRE 456 -456 24 -456
WIRE 632 -456 456 -456
WIRE 728 -456 632 -456
WIRE 24 -424 24 -456
WIRE -648 -408 -648 -456
WIRE 728 -408 728 -456
WIRE -344 -392 -376 -392
WIRE -232 -392 -280 -392
WIRE 24 -328 24 -344
WIRE 728 -296 728 -328
WIRE -648 -280 -648 -328
WIRE -376 -280 -376 -392
WIRE -376 -280 -648 -280
WIRE -344 -280 -376 -280
WIRE -232 -280 -232 -392
WIRE -232 -280 -264 -280
WIRE -200 -280 -232 -280
WIRE -88 -280 -120 -280
WIRE -40 -280 -88 -280
WIRE 456 -248 456 -456
WIRE -88 -200 -88 -280
WIRE -72 -200 -88 -200
WIRE 24 -200 24 -232
WIRE 24 -200 -8 -200
WIRE 184 -200 24 -200
WIRE 312 -200 184 -200
WIRE 392 -200 312 -200
WIRE 24 -184 24 -200
WIRE 632 -168 632 -456
WIRE 184 -136 184 -200
WIRE 312 -120 312 -200
WIRE 456 -120 456 -152
WIRE 568 -120 456 -120
WIRE 456 -104 456 -120
WIRE 24 -88 24 -104
WIRE 120 -88 24 -88
WIRE -648 -56 -648 -280
WIRE -424 -56 -424 -456
WIRE -840 -8 -888 -8
WIRE -712 -8 -760 -8
WIRE -200 -8 -360 -8
WIRE -152 -8 -200 -8
WIRE 456 -8 456 -24
WIRE 456 -8 -72 -8
WIRE 632 -8 632 -72
WIRE 632 -8 456 -8
WIRE 760 -8 632 -8
WIRE 888 -8 760 -8
WIRE 24 8 24 -88
WIRE 888 8 888 -8
WIRE -200 24 -200 -8
WIRE 456 72 456 -8
WIRE -648 88 -648 40
WIRE -536 88 -648 88
WIRE -424 88 -424 40
WIRE -424 88 -536 88
WIRE 888 104 888 88
WIRE 24 120 24 88
WIRE 184 120 184 -40
WIRE 184 120 24 120
WIRE 312 120 312 -56
WIRE 312 120 184 120
WIRE 392 120 312 120
WIRE -200 136 -200 104
WIRE 632 136 632 -8
WIRE -536 152 -536 88
WIRE 24 168 24 120
WIRE 456 184 456 168
WIRE 568 184 456 184
WIRE 456 216 456 184
WIRE -536 312 -536 232
WIRE 24 312 24 248
WIRE 24 312 -536 312
WIRE 456 312 456 296
WIRE 456 312 24 312
WIRE 632 312 632 232
WIRE 632 312 456 312
WIRE 728 312 632 312
WIRE 728 360 728 312
WIRE 728 456 728 440
FLAG 728 -296 0
FLAG 728 456 0
FLAG 888 104 0
FLAG -200 136 0
FLAG -888 -8 0
FLAG 888 -8 OUT
DATAFLAG 2128 1360 ""
SYMBOL NPN 392 -248 R0
SYMATTR InstName Q5
SYMATTR Value 2N3904
SYMBOL npn 568 -168 R0
SYMATTR InstName Q7
SYMATTR Value 2N2219A
SYMBOL npn 568 136 R0
SYMATTR InstName Q8
SYMATTR Value 2N2219A
SYMBOL PNP 392 168 M180
SYMATTR InstName Q6
SYMATTR Value 2N3906
SYMBOL VOLTAGE 728 -424 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL voltage 728 344 R0
SYMATTR InstName V2
SYMATTR Value -10
SYMBOL RES 8 152 R0
SYMATTR InstName R11
SYMATTR Value 5K
SYMBOL res 872 -8 R0
SYMATTR InstName R14
SYMATTR Value 8
SYMBOL res 8 -200 R0
SYMATTR InstName R9
SYMATTR Value 2K
SYMBOL res 8 -8 R0
SYMATTR InstName R10
SYMATTR Value 1K
SYMBOL npn 120 -136 R0
SYMATTR InstName Q4
SYMATTR Value 2N3904
SYMBOL npn -712 -56 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn -360 -56 M0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL res -664 -424 R0
SYMATTR InstName R2
SYMATTR Value 200
SYMBOL res -552 136 R0
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL pnp -40 -232 M180
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL res -216 8 R0
SYMATTR InstName R6
SYMATTR Value 5K
SYMBOL res -56 -24 R90
SYMATTR InstName R7
SYMATTR Value 50K
SYMBOL res -744 -24 R90
SYMATTR InstName R1
SYMATTR Value 5K
SYMBOL res 8 -440 R0
SYMATTR InstName R8
SYMATTR Value 100
SYMBOL res -248 -296 R90
SYMATTR InstName R4
SYMATTR Value 9K
SYMBOL cap -8 -216 R90
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL cap -280 -408 R90
SYMATTR InstName C1
SYMATTR Value 10p
SYMBOL res 440 200 R0
SYMATTR InstName R13
SYMATTR Value 1K
SYMBOL res 440 -120 R0
SYMATTR InstName R12
SYMATTR Value 1K
SYMBOL cap 296 -120 R0
SYMATTR InstName C3
SYMATTR Value .001
SYMBOL res -104 -296 R90
SYMATTR InstName R5
SYMATTR Value 1K