Version 4
SHEET 1 1604 740
WIRE 1024 -144 976 -144
WIRE 976 -80 976 -144
WIRE 976 -80 848 -80
WIRE 1120 -80 976 -80
WIRE 1440 -48 1408 -48
WIRE 848 -16 848 -80
WIRE 384 0 320 0
WIRE 1120 0 1120 -80
WIRE 1440 0 1440 -48
WIRE 320 32 320 0
WIRE 128 48 96 48
WIRE -256 64 -304 64
WIRE 96 80 96 48
WIRE -304 96 -304 64
WIRE 848 96 848 64
WIRE 1296 96 848 96
WIRE 1440 112 1440 80
WIRE 560 128 480 128
WIRE 720 128 640 128
WIRE 1120 128 1120 80
WIRE 1408 128 1408 -48
WIRE 1408 128 1120 128
WIRE 848 144 848 96
WIRE 1120 144 1120 128
WIRE 320 160 320 112
WIRE 720 192 720 128
WIRE 784 192 720 192
WIRE 1296 192 1296 96
WIRE 1296 192 1184 192
WIRE 1392 192 1296 192
WIRE 0 208 -48 208
WIRE 96 208 96 160
WIRE 96 208 64 208
WIRE 128 208 96 208
WIRE 256 208 208 208
WIRE -304 224 -304 176
WIRE -304 224 -400 224
WIRE 1392 224 1392 192
WIRE -400 240 -400 224
WIRE 96 256 96 208
WIRE -304 272 -304 224
WIRE 320 288 320 256
WIRE 480 288 480 128
WIRE 480 288 320 288
WIRE 320 304 320 288
WIRE 848 304 848 240
WIRE 992 304 848 304
WIRE 1120 304 1120 240
WIRE 1120 304 992 304
WIRE 704 336 704 320
WIRE 1392 336 1392 304
WIRE 96 368 96 336
WIRE 992 368 992 304
WIRE -304 400 -304 352
WIRE -288 400 -304 400
WIRE 832 416 704 416
WIRE 928 416 832 416
WIRE 320 432 320 384
WIRE 832 448 832 416
WIRE -48 464 -48 208
WIRE 528 464 -48 464
WIRE 992 512 992 464
WIRE 832 544 832 512
WIRE 16 576 -304 576
WIRE -304 592 -304 576
WIRE 304 608 160 608
WIRE 464 608 384 608
WIRE 528 608 528 464
WIRE 528 608 464 608
WIRE 832 640 832 608
WIRE 992 640 992 592
WIRE -304 704 -304 672
WIRE 464 720 464 688
FLAG -304 704 0
FLAG -400 240 0
FLAG -256 64 +12V
IOPIN -256 64 BiDir
FLAG 1024 -144 +12V
IOPIN 1024 -144 BiDir
FLAG -288 400 -12V
IOPIN -288 400 BiDir
FLAG 96 368 0
FLAG 128 48 +12V
IOPIN 128 48 BiDir
FLAG 320 432 0
FLAG 464 720 0
FLAG 384 0 +12V
IOPIN 384 0 BiDir
FLAG 992 640 0
FLAG 832 640 0
FLAG 704 320 +12V
IOPIN 704 320 BiDir
FLAG 1440 112 0
FLAG 976 288 EBase
FLAG 1392 336 0
DATAFLAG 896 304 ""
DATAFLAG 752 192 ""
DATAFLAG 976 96 ""
DATAFLAG 1344 128 ""
DATAFLAG 864 416 ""
SYMBOL voltage -304 256 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL SpecialFunctions\\modulate 16 576 R0
WINDOW 3 16 -20 Left 2
SYMATTR Value mark=1000 space=0
SYMATTR InstName A1
SYMBOL voltage -304 576 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PWL(0 0.001 1 0.01)
SYMBOL npn 256 160 R0
SYMATTR InstName Q3
SYMBOL res 224 224 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 470
SYMBOL voltage -304 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL res 304 16 R0
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL res 304 288 R0
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL cap 0 224 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 100µ
SYMBOL res 80 64 R0
SYMATTR InstName R4
SYMATTR Value 80k
SYMBOL res 80 240 R0
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL res 448 592 R0
SYMATTR InstName R6
SYMATTR Value 100
SYMBOL res 400 592 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 100
SYMBOL npn 784 144 R0
SYMATTR InstName Q1
SYMBOL npn 1184 144 M0
SYMATTR InstName Q2
SYMBOL res 832 -32 R0
SYMATTR InstName R9
SYMATTR Value 4.7k
SYMBOL res 1104 -16 R0
SYMATTR InstName R10
SYMATTR Value 4.7k
SYMBOL npn 928 368 R0
SYMATTR InstName Q4
SYMBOL res 976 496 R0
SYMATTR InstName R8
SYMATTR Value 270
SYMBOL diode 816 448 R0
SYMATTR InstName D1
SYMBOL diode 816 544 R0
SYMATTR InstName D2
SYMBOL res 688 320 R0
SYMATTR InstName R11
SYMATTR Value 10K
SYMBOL res 1376 208 R0
SYMATTR InstName R12
SYMATTR Value 10K
SYMBOL res 656 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 1
SYMBOL res 1424 -16 R0
SYMATTR InstName R14
SYMATTR Value 10K
TEXT -224 504 Left 2 !.tran 1