Version 4
SHEET 1 1608 680
WIRE 0 -176 -560 -176
WIRE 304 -176 0 -176
WIRE 368 -176 304 -176
WIRE 544 -176 368 -176
WIRE 608 -176 544 -176
WIRE 1104 -176 608 -176
WIRE 544 -48 544 -176
WIRE 304 0 304 -176
WIRE 1104 48 1104 -176
WIRE 1072 64 1024 64
WIRE 1200 80 1136 80
WIRE 912 96 128 96
WIRE 1072 96 912 96
WIRE 912 112 912 96
WIRE -560 128 -560 -176
WIRE 0 128 0 -176
WIRE -32 144 -112 144
WIRE 368 144 368 -176
WIRE 48 160 32 160
WIRE 128 160 128 96
WIRE 128 160 112 160
WIRE 192 160 128 160
WIRE 336 160 192 160
WIRE 608 160 608 -176
WIRE -32 176 -192 176
WIRE 496 176 400 176
WIRE 576 176 496 176
WIRE 304 192 304 80
WIRE 336 192 304 192
WIRE 720 192 640 192
WIRE 784 192 720 192
WIRE 544 208 544 32
WIRE 576 208 544 208
WIRE 720 208 720 192
WIRE 912 240 912 192
WIRE 1024 240 1024 64
WIRE 1024 240 912 240
WIRE -192 256 -192 176
WIRE 192 256 192 160
WIRE 304 256 304 192
WIRE 400 256 304 256
WIRE 496 256 496 176
WIRE 496 256 480 256
WIRE 128 272 128 160
WIRE 912 288 912 240
WIRE 720 304 720 288
WIRE 720 304 256 304
WIRE 544 320 544 208
WIRE -112 368 -112 144
WIRE -96 368 -112 368
WIRE 448 368 -32 368
WIRE 304 400 304 256
WIRE -112 416 -112 368
WIRE 32 416 -112 416
WIRE 128 416 128 336
WIRE 128 416 112 416
WIRE 192 416 192 352
WIRE 192 416 128 416
WIRE 448 432 448 368
WIRE 784 432 784 192
WIRE 784 432 448 432
WIRE 128 448 128 416
WIRE 272 464 256 464
WIRE 272 496 272 464
WIRE 416 496 272 496
WIRE 784 496 784 432
WIRE 784 496 496 496
WIRE -560 528 -560 208
WIRE -192 528 -192 336
WIRE -192 528 -560 528
WIRE 0 528 0 192
WIRE 0 528 -192 528
WIRE 128 528 0 528
WIRE 192 528 192 512
WIRE 192 528 128 528
WIRE 304 528 304 480
WIRE 304 528 192 528
WIRE 368 528 368 208
WIRE 368 528 304 528
WIRE 544 528 544 400
WIRE 544 528 368 528
WIRE 608 528 608 224
WIRE 608 528 544 528
WIRE 912 528 912 352
WIRE 912 528 608 528
WIRE 1104 528 1104 112
WIRE 1104 528 912 528
WIRE -560 544 -560 528
FLAG -560 544 0
SYMBOL voltage -560 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL Opamps\\LT1006 0 96 R0
SYMATTR InstName U1
SYMBOL res 112 432 R0
SYMATTR InstName R1
SYMATTR Value 100
SYMBOL cap 112 272 R0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL voltage -192 240 R0
WINDOW 3 24 32 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 0.2
SYMBOL Opamps\\LT1006 368 112 R0
SYMATTR InstName U2
SYMBOL res 496 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 288 -16 R0
SYMATTR InstName R4
SYMATTR Value 22k
SYMBOL Opamps\\LT1006 608 128 R0
SYMATTR InstName U3
SYMBOL res 528 -64 R0
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL res 528 304 R0
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL npn 256 256 M0
SYMATTR InstName Q1
SYMBOL res 704 192 R0
SYMATTR InstName R8
SYMATTR Value 470
SYMBOL diode 48 176 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL res 128 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL diode -32 352 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMBOL res 288 384 R0
SYMATTR InstName R5
SYMATTR Value 22k
SYMBOL npn 256 416 M0
SYMATTR InstName Q2
SYMBOL res 512 480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 470
SYMBOL Opamps\\LT1006 1104 16 R0
SYMATTR InstName U4
SYMBOL res 896 96 R0
SYMATTR InstName R10
SYMATTR Value 100k
SYMBOL cap 896 288 R0
SYMATTR InstName C2
SYMATTR Value 1µ
TEXT -594 538 Left 2 !.tran 0 1.01 1 startup