Version 4
SHEET 1 2452 680
WIRE 1824 -688 1536 -688
WIRE 1264 -576 1104 -576
WIRE 1376 -576 1264 -576
WIRE 1536 -576 1536 -688
WIRE 1536 -576 1376 -576
WIRE 1264 -544 1264 -576
WIRE 1536 -544 1536 -576
WIRE 1104 -464 1104 -496
WIRE 1264 -416 1264 -464
WIRE 1488 -368 1328 -368
WIRE 1264 -272 1264 -320
WIRE 1264 -272 1184 -272
WIRE 1184 -240 1184 -272
WIRE 1536 -144 1536 -464
WIRE 1600 -144 1536 -144
WIRE 1184 -112 1184 -160
WIRE 1600 -16 1600 -144
WIRE 1824 -16 1824 -688
WIRE 2160 -16 1824 -16
WIRE 1184 0 1184 -32
WIRE 1376 0 1376 -576
WIRE 1264 16 1264 -272
WIRE 1344 16 1264 16
WIRE 1488 32 1488 -368
WIRE 1488 32 1408 32
WIRE 1536 32 1488 32
WIRE 176 48 96 48
WIRE 256 48 240 48
WIRE 640 48 256 48
WIRE 816 48 720 48
WIRE 928 48 816 48
WIRE 1008 48 928 48
WIRE 1344 48 1088 48
WIRE 1952 48 1920 48
WIRE 2048 48 2032 48
WIRE 2240 48 2048 48
WIRE 2400 48 2320 48
WIRE 96 80 96 48
WIRE 928 80 928 48
WIRE 816 96 816 48
WIRE 1920 96 1920 48
WIRE 2160 96 2160 -16
WIRE 1376 112 1376 64
WIRE 2048 112 2048 48
WIRE 2128 112 2048 112
WIRE 2400 128 2400 48
WIRE 2400 128 2192 128
WIRE 176 144 176 48
WIRE 256 144 256 48
WIRE 1600 144 1600 80
WIRE 1712 144 1600 144
WIRE 1840 144 1712 144
WIRE 1952 144 1840 144
WIRE 2128 144 1952 144
WIRE 96 192 96 160
WIRE 1712 192 1712 144
WIRE 1840 192 1840 144
WIRE 1952 192 1952 144
WIRE 1664 208 1648 208
WIRE 816 224 816 160
WIRE 928 224 928 160
WIRE 1664 256 1376 256
WIRE 1376 272 1376 256
WIRE 1376 384 1376 352
WIRE 1648 384 1648 208
WIRE 1712 384 1712 272
WIRE 1840 384 1840 256
WIRE 1952 384 1952 272
WIRE 2160 384 2160 160
FLAG 816 224 0
FLAG 928 224 0
FLAG 1376 112 0
FLAG 1104 -464 0
FLAG 1184 0 0
FLAG 2160 384 0
FLAG 1952 384 0
FLAG 1840 384 0
FLAG 1920 96 0
FLAG 96 192 0
FLAG 1712 384 0
FLAG 1648 384 0
FLAG 1376 384 0
SYMBOL voltage 96 176 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PWL file=ltspice.txt
SYMBOL cap 240 32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 150p
SYMBOL res 272 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1Meg
SYMBOL res 736 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL schottky 832 160 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 912 64 R0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 1104 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL Opamps\\LTC6244 1376 32 R0
SYMATTR InstName U1
SYMBOL voltage 1104 -592 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 8.5
SYMBOL voltage 1184 -128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value -8.5
SYMBOL res 1168 -256 R0
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL npn 1328 -416 M0
SYMATTR InstName Q1
SYMATTR Value BC848B
SYMBOL res 1248 -560 R0
SYMATTR InstName R6
SYMATTR Value 200
SYMBOL npn 1536 -16 R0
SYMATTR InstName Q2
SYMATTR Value BC848B
SYMBOL res 1520 -560 R0
SYMATTR InstName R7
SYMATTR Value 200
SYMBOL cap 1824 192 R0
SYMATTR InstName C2
SYMATTR Value 4.7n
SYMBOL res 1936 176 R0
SYMATTR InstName R8
SYMATTR Value 10Meg
SYMBOL Opamps\\LTC6244 2160 128 R0
SYMATTR InstName U2
SYMBOL res 2048 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res 2336 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL sw 1712 176 R0
SYMATTR InstName S1
SYMATTR Value SW1
SYMBOL voltage 1376 256 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value PULSE(0 1 0.96m)
TEXT -176 336 Left 2 !.tran 0 1.8m 0.5m
TEXT -176 368 Left 2 !.model SW1 SW(Ron= 0.1 Roff=1000Meg, Vt =.5 Vh=-.4