Version 4
SHEET 1 2012 680
WIRE 720 -336 656 -336
WIRE 896 -336 784 -336
WIRE 656 -208 656 -336
WIRE 720 -208 656 -208
WIRE 896 -208 896 -336
WIRE 896 -208 800 -208
WIRE 432 -192 432 -224
WIRE 432 -48 432 -112
WIRE 496 -48 432 -48
WIRE 656 -48 656 -208
WIRE 656 -48 560 -48
WIRE 720 -48 656 -48
WIRE 896 -32 896 -208
WIRE 896 -32 784 -32
WIRE 928 -32 896 -32
WIRE 1040 -32 1008 -32
WIRE 720 -16 656 -16
WIRE 432 0 432 -48
WIRE 656 16 656 -16
WIRE 1040 16 1040 -32
WIRE 208 64 160 64
WIRE 336 64 208 64
WIRE 384 64 336 64
WIRE 208 112 208 64
WIRE 208 112 96 112
WIRE 336 128 336 64
WIRE 432 128 432 96
WIRE 432 128 400 128
WIRE 1040 144 1040 96
WIRE 96 160 96 112
WIRE 208 160 208 112
WIRE 48 224 -80 224
WIRE -80 240 -80 224
WIRE 96 288 96 240
WIRE 208 288 208 240
WIRE 208 288 96 288
WIRE 208 320 208 288
WIRE 432 320 432 128
WIRE 432 320 208 320
WIRE -80 368 -80 320
WIRE 432 368 432 320
FLAG -688 -208 0
FLAG -688 -288 V+
FLAG 432 -224 V+
FLAG -432 -288 in
FLAG 160 64 in
FLAG -432 -208 0
FLAG 656 16 0
FLAG 1040 144 0
FLAG -576 -208 0
FLAG -576 -288 V-
FLAG 752 0 V-
FLAG 752 -64 V+
FLAG 1040 -32 out
FLAG 48 176 0
FLAG -80 368 0
FLAG 432 368 0
SYMBOL voltage -432 -304 R0
WINDOW 123 24 124 Left 2
WINDOW 39 24 152 Left 2
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=50
SYMATTR InstName V1
SYMATTR Value SINE(0 1m 1k)
SYMBOL njf 384 0 R0
SYMATTR InstName J1
SYMATTR Value BF862
SYMATTR Prefix X
SYMBOL voltage -688 -304 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL cap 560 -64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100µ
SYMBOL res 1024 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 100
SYMBOL Opamps\\OP27 752 -96 R0
SYMATTR InstName U1
SYMBOL res 816 -224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL res 1024 0 R0
SYMATTR InstName R3
SYMATTR Value 1MEG
SYMBOL voltage -576 -304 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value -15
SYMBOL res 416 -208 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 192 144 R0
SYMATTR InstName R4
SYMATTR Value 5k
SYMBOL sw 96 144 R0
SYMATTR InstName S1
SYMATTR Value switch
SYMBOL voltage -80 224 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(0 1 10m)
SYMBOL cap 784 -352 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 400p
SYMBOL cap 400 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 100p
TEXT -720 56 Left 2 !;tran 0 500m 0
TEXT -720 -32 Left 2 !.options plotwinsize=0
TEXT -720 0 Left 2 !.lib BF862.lib
TEXT -720 88 Left 2 !.ac dec 1000 1 1MEG
TEXT -720 -64 Left 2 !.model switch SW(Ron=.1 Roff=1Meg Vt=0 Lser=10n)