Version 4
SHEET 1 1108 680
WIRE -16 -48 -224 -48
WIRE 208 -48 64 -48
WIRE 256 -48 208 -48
WIRE 288 -48 256 -48
WIRE 384 -48 368 -48
WIRE 624 -48 384 -48
WIRE 560 0 496 0
WIRE 144 16 144 0
WIRE 256 16 256 -48
WIRE 384 16 384 -48
WIRE 384 16 320 16
WIRE 560 16 560 0
WIRE 64 32 64 -48
WIRE 112 32 64 32
WIRE 496 32 496 0
WIRE 496 32 400 32
WIRE 208 48 208 16
WIRE 208 48 176 48
WIRE -144 64 -208 64
WIRE -128 64 -144 64
WIRE -32 64 -48 64
WIRE 64 64 48 64
WIRE 112 64 64 64
WIRE 624 64 624 -48
WIRE 656 64 624 64
WIRE -48 80 -48 64
WIRE 208 80 208 48
WIRE 336 80 288 80
WIRE 496 80 496 32
WIRE 720 112 720 80
WIRE 64 128 0 128
WIRE 144 128 64 128
WIRE 432 128 400 128
WIRE -224 144 -224 -48
WIRE -144 144 -224 144
WIRE -48 144 -144 144
WIRE 0 160 0 128
WIRE 144 176 144 128
WIRE 144 176 80 176
WIRE 400 176 400 128
WIRE -208 208 -208 64
WIRE 16 240 16 176
WIRE 64 240 16 240
WIRE 16 256 16 240
WIRE 16 256 0 256
WIRE 144 256 144 176
WIRE 144 256 128 256
WIRE 288 256 288 80
WIRE 304 256 288 256
WIRE 400 256 368 256
WIRE 448 256 400 256
WIRE 496 256 448 256
WIRE 624 256 624 64
WIRE 624 256 496 256
WIRE 720 256 624 256
WIRE 784 256 720 256
WIRE 880 256 784 256
WIRE 64 272 -48 272
WIRE 720 272 720 256
WIRE -48 288 -48 272
WIRE 96 304 96 288
WIRE 288 304 288 256
WIRE 16 336 16 256
WIRE 112 336 16 336
WIRE 432 336 192 336
WIRE 448 336 448 320
WIRE 448 336 432 336
WIRE 496 336 496 320
WIRE 496 336 448 336
WIRE 624 336 624 320
WIRE 624 336 496 336
WIRE 720 336 624 336
WIRE 784 336 720 336
WIRE 880 336 784 336
WIRE 432 352 432 336
WIRE 16 416 16 336
WIRE 112 416 80 416
WIRE 192 416 192 336
WIRE -224 464 -224 144
WIRE 192 464 192 416
WIRE 192 464 -224 464
FLAG 448 496 0
FLAG -48 368 0
FLAG 560 96 0
FLAG 560 0 v+
FLAG 144 0 v+
FLAG 96 224 v+
FLAG 656 160 0
FLAG 720 0 v+
FLAG 288 480 0
FLAG 848 16 0
FLAG 848 96 vneg
FLAG 96 304 vneg
FLAG 144 80 vneg
SYMBOL Opamps\\UniversalOpamp2 144 48 R0
WINDOW 0 -26 0 Left 2
SYMATTR InstName U1
SYMATTR Value2 Avol=1Meg GBW=4Meg Slew=4Meg
SYMATTR SpiceLine2 en=0 enk=0 in=0 ink=0 Rin=50000Meg
SYMBOL Opamps\\UniversalOpamp2 96 256 R0
SYMATTR InstName U2
SYMATTR Value2 Avol=1Meg GBW=4Meg Slew=8Meg
SYMBOL npn 336 32 R0
SYMATTR InstName Q1
SYMATTR Value 2N3019
SYMBOL npn 432 80 R0
SYMATTR InstName Q2
SYMATTR Value 2N3055
SYMBOL res 384 160 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL res 432 320 R0
SYMATTR InstName R4
SYMATTR Value 0.5
SYMBOL cap 480 256 R0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL cap 432 256 R0
WINDOW 3 -56 34 Left 2
SYMATTR Value 10µ
SYMATTR InstName C2
SYMATTR SpiceLine Rser=0.5
SYMBOL cap 80 160 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value 330p
SYMBOL voltage 560 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 26 35 Left 2
WINDOW 3 -13 56 Left 2
SYMATTR InstName V1
SYMATTR Value 20
SYMBOL voltage -48 272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 36 58 Left 2
WINDOW 3 -16 57 Left 2
SYMATTR InstName V2
SYMATTR Value 0.5
SYMBOL voltage -144 48 R0
WINDOW 3 -11 53 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 34 53 Left 2
SYMATTR Value 2
SYMATTR InstName V3
SYMBOL res 208 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL res 384 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 56k
SYMBOL current 784 256 R0
WINDOW 123 -76 -31 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -199 153 Left 2
SYMATTR Value2 AC 1
SYMATTR Value PULSE(0.1 0.8 1m 1u 1u 2m)
SYMATTR InstName I1
SYMBOL cap 704 272 R0
SYMATTR InstName C5
SYMATTR Value 1n
SYMATTR SpiceLine Rser=1m
SYMBOL npn 352 304 M0
SYMATTR InstName Q3
SYMATTR Value 2N3904
SYMBOL diode 640 320 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMBOL cap 192 -48 R0
WINDOW 3 -34 34 Left 2
SYMATTR Value 100p
SYMATTR InstName C4
SYMBOL res 480 160 R0
SYMATTR InstName R3
SYMATTR Value 1m
SYMBOL npn 720 64 M0
SYMATTR InstName Q4
SYMBOL res 704 -16 R0
SYMATTR InstName R6
SYMATTR Value 200k
SYMBOL res 448 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 100
SYMBOL res 272 384 R0
SYMATTR InstName R10
SYMATTR Value 1
SYMBOL diode 368 240 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D7
SYMBOL current 880 256 R0
WINDOW 123 -76 -31 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -189 114 Left 2
SYMATTR Value2 AC 0
SYMATTR Value PULSE(0.0 5 6m 1u 1u 1m)
SYMATTR InstName I2
SYMBOL res 192 96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 80 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 27k
SYMBOL cap 320 0 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 100p
SYMBOL res 64 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 2.2k
SYMBOL res -32 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 22k
SYMBOL cap -64 80 R0
SYMATTR InstName C7
SYMATTR Value 100n
SYMBOL diode 48 64 R0
SYMATTR InstName D1
SYMBOL voltage 848 0 R0
WINDOW 3 -9 57 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 0 34 53 Left 2
SYMATTR Value 3
SYMATTR InstName V4
SYMBOL res 208 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 500
SYMBOL cap 80 400 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C8
SYMATTR Value 2n
SYMBOL pnp -64 256 M180
SYMATTR InstName Q5
SYMBOL res -112 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R14
SYMATTR Value 200k
SYMBOL ind 432 400 R0
SYMATTR InstName L1
SYMATTR Value 20n
SYMBOL diode -64 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
TEXT 888 168 Left 2 !.tran 20m
TEXT 608 464 Left 2 !;ac oct 50 1 10meg