Version 4
SHEET 1 880 1032
WIRE -624 -224 -1264 -224
WIRE -176 -224 -624 -224
WIRE 176 -224 -176 -224
WIRE 400 -224 176 -224
WIRE -624 -208 -624 -224
WIRE -176 -208 -176 -224
WIRE 176 -208 176 -224
WIRE -176 -112 -176 -144
WIRE 400 -112 400 -224
WIRE 176 -96 176 -128
WIRE 176 -96 -48 -96
WIRE -48 -80 -48 -96
WIRE 176 -64 96 -64
WIRE 336 -64 176 -64
WIRE -1264 -48 -1264 -224
WIRE -176 -32 -176 -48
WIRE -112 -32 -176 -32
WIRE -176 0 -176 -32
WIRE 176 0 176 -64
WIRE 176 0 128 0
WIRE 400 48 400 -16
WIRE -48 64 -48 16
WIRE 96 64 96 -64
WIRE 96 64 -48 64
WIRE 176 64 176 0
WIRE -176 128 -176 80
WIRE -624 160 -624 -128
WIRE -624 160 -720 160
WIRE -512 160 -624 160
WIRE 128 160 128 0
WIRE 176 160 176 128
WIRE 176 160 128 160
WIRE -1072 208 -1104 208
WIRE -896 208 -1008 208
WIRE -784 208 -896 208
WIRE -256 208 -448 208
WIRE -160 208 -256 208
WIRE 400 208 400 128
WIRE 400 208 -80 208
WIRE 672 208 400 208
WIRE 400 240 400 208
WIRE -1264 256 -1264 16
WIRE -1264 256 -1440 256
WIRE 176 256 176 160
WIRE 672 256 672 208
WIRE -896 272 -896 208
WIRE -256 272 -256 208
WIRE -1104 336 -1104 208
WIRE -256 400 -256 352
WIRE 400 400 400 320
WIRE 176 448 176 320
WIRE 336 448 176 448
WIRE 672 448 672 336
WIRE -256 512 -256 464
WIRE 32 512 -16 512
WIRE 176 512 176 448
WIRE 176 512 96 512
WIRE 176 544 176 512
WIRE -1264 576 -1264 256
WIRE -1104 592 -1104 416
WIRE -896 592 -896 352
WIRE -720 592 -720 256
WIRE -16 592 -16 512
WIRE -16 592 -720 592
WIRE 112 592 -16 592
WIRE -720 624 -720 592
WIRE -1264 752 -1264 640
WIRE -720 752 -720 704
WIRE -720 752 -1264 752
WIRE -512 752 -512 256
WIRE -512 752 -720 752
WIRE 176 752 176 640
WIRE 176 752 -512 752
WIRE 400 752 400 496
WIRE 400 752 176 752
FLAG -1440 256 0
FLAG -896 592 0
FLAG -1104 592 0
FLAG -256 512 0
FLAG 672 448 0
FLAG -176 128 0
SYMBOL res 656 240 R0
SYMATTR InstName R1
SYMATTR Value 8
SYMBOL res 384 32 R0
SYMATTR InstName R2
SYMATTR Value 330m
SYMBOL res 384 224 R0
SYMATTR InstName R3
SYMATTR Value 330m
SYMBOL npn 336 -112 R0
SYMATTR InstName Q1
SYMATTR Value BD139
SYMBOL pnp 336 496 M180
SYMATTR InstName Q2
SYMATTR Value BD140
SYMBOL diode 160 64 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 160 256 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL npn 112 544 R0
SYMATTR InstName Q3
SYMATTR Value BC547C
SYMBOL polcap 96 496 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 220p
SYMBOL res 160 -224 R0
SYMATTR InstName R4
SYMATTR Value 27
SYMBOL res -64 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 15k
SYMBOL res -240 368 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R6
SYMATTR Value 4k7
SYMBOL pnp -448 256 R180
SYMATTR InstName Q4
SYMATTR Value BC557C
SYMBOL pnp -784 256 M180
SYMATTR InstName Q5
SYMATTR Value BC557C
SYMBOL res -736 608 R0
SYMATTR InstName R7
SYMATTR Value 2k2
SYMBOL res -640 -224 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL res -912 256 R0
SYMATTR InstName R9
SYMATTR Value 15k
SYMBOL polcap -1008 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10µ
SYMBOL Misc\\signal -1104 320 R0
WINDOW 123 24 132 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC .1
SYMATTR InstName V1
SYMBOL Misc\\cell -1264 -48 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 10
SYMBOL Misc\\cell -1264 640 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value -10
SYMBOL cap -272 400 R0
SYMATTR InstName C3
SYMATTR Value 220µ
SYMBOL pnp -112 16 M180
SYMATTR InstName Q6
SYMATTR Value BD140
SYMBOL diode -192 -112 R0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode -192 -208 R0
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL res -160 96 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R10
SYMATTR Value 4k7
TEXT -1864 592 Left 2 !.tran 0 50m 40m 0.001m
TEXT -1856 408 Left 2 !.OPTIONS plotwinsize=0
TEXT -1864 552 Left 2 !;ac dec 10 1 1meg