Version 4
SHEET 1 1240 680
WIRE 96 -64 -80 -64
WIRE 384 -64 96 -64
WIRE 640 -64 384 -64
WIRE 928 -64 640 -64
WIRE 384 -32 384 -64
WIRE 640 -32 640 -64
WIRE -80 16 -80 -64
WIRE 464 16 448 16
WIRE 576 16 464 16
WIRE 928 32 928 -64
WIRE 96 80 96 -64
WIRE 864 80 720 80
WIRE 384 96 384 64
WIRE 464 96 464 16
WIRE 464 96 384 96
WIRE 640 144 640 64
WIRE 720 144 720 80
WIRE 720 144 640 144
WIRE -80 192 -80 96
WIRE -80 192 -160 192
WIRE 928 192 928 128
WIRE 976 192 928 192
WIRE 1008 192 976 192
WIRE 384 208 384 96
WIRE 640 208 640 144
WIRE -160 224 -160 192
WIRE 304 256 272 256
WIRE 320 256 304 256
WIRE 720 256 704 256
WIRE 752 256 720 256
WIRE -80 272 -80 192
WIRE 272 288 272 256
WIRE 752 288 752 256
WIRE 384 336 384 304
WIRE 496 336 384 336
WIRE 560 336 496 336
WIRE 640 336 640 304
WIRE 640 336 560 336
WIRE 96 400 96 160
WIRE 192 400 96 400
WIRE 752 416 752 368
WIRE 96 448 96 400
WIRE 496 448 496 336
WIRE 928 448 928 192
WIRE 192 496 192 400
WIRE 192 496 160 496
WIRE 432 496 192 496
WIRE 864 496 432 496
WIRE -80 592 -80 352
WIRE 96 592 96 544
WIRE 96 592 -80 592
WIRE 496 592 496 544
WIRE 496 592 96 592
WIRE 928 592 928 544
WIRE 928 592 496 592
FLAG -160 224 0
FLAG 720 144 out1
FLAG 752 416 0
FLAG 976 192 out2
FLAG 272 288 0
FLAG 304 256 V-
FLAG 720 256 V+
FLAG 560 336 Vtail
SYMBOL npn 320 208 R0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn 704 208 M0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL voltage -80 0 R0
SYMATTR InstName V1
SYMATTR Value 6V
SYMBOL voltage -80 256 R0
SYMATTR InstName V2
SYMATTR Value 6V
SYMBOL voltage 752 272 M0
WINDOW 123 24 72 Left 2
WINDOW 39 24 100 Left 2
WINDOW 3 24 44 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName Vin
SYMATTR Value 0
SYMBOL pnp 864 128 M180
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL pnp 576 64 M180
SYMATTR InstName Q4
SYMATTR Value 2N3906
SYMBOL pnp 448 64 R180
SYMATTR InstName Q5
SYMATTR Value 2N3906
SYMBOL npn 432 448 R0
SYMATTR InstName Q6
SYMATTR Value 2N3904
SYMBOL npn 864 448 R0
SYMATTR InstName Q7
SYMATTR Value 2N3904
SYMBOL npn 160 448 M0
SYMATTR InstName Q8
SYMATTR Value 2N3904
SYMBOL res 80 64 R0
SYMATTR InstName R1
SYMATTR Value 12k
TEXT 184 560 Left 2 !.ac dec 100 100 1g