Version 4
SHEET 1 1488 780
WIRE -80 -112 -80 -144
WIRE -80 -112 -208 -112
WIRE 192 -64 192 -160
WIRE 192 -64 -16 -64
WIRE -208 -32 -208 -112
WIRE -80 -32 -80 -112
WIRE 224 -16 160 -16
WIRE 368 -16 288 -16
WIRE 736 32 512 32
WIRE 736 48 736 32
WIRE 192 64 192 -64
WIRE 288 64 192 64
WIRE -592 96 -592 -144
WIRE -432 96 -432 -144
WIRE 592 96 592 -160
WIRE 512 112 512 32
WIRE 528 112 512 112
WIRE 288 128 288 64
WIRE -16 144 -16 -64
WIRE 32 144 -16 144
WIRE 160 144 160 -16
WIRE 160 144 112 144
WIRE 224 144 160 144
WIRE 368 160 368 -16
WIRE 400 160 368 160
WIRE 512 160 512 112
WIRE 512 160 480 160
WIRE 736 160 736 128
WIRE 736 160 656 160
WIRE 848 160 736 160
WIRE 368 192 368 160
WIRE 368 192 352 192
WIRE 848 192 848 160
WIRE 528 208 512 208
WIRE 192 240 192 64
WIRE 224 240 192 240
WIRE 848 288 848 272
WIRE 976 288 848 288
WIRE -80 304 -80 48
WIRE 848 320 848 288
WIRE -432 352 -432 176
WIRE -208 352 -208 48
WIRE -144 352 -208 352
WIRE 288 368 288 256
WIRE 512 368 512 208
WIRE 592 368 592 224
WIRE 976 416 976 288
WIRE -208 448 -208 352
WIRE -592 496 -592 176
WIRE -80 496 -80 400
WIRE 1248 496 1248 400
WIRE 208 560 -32 560
WIRE 432 560 288 560
WIRE 848 560 848 400
WIRE 848 560 432 560
WIRE 944 560 848 560
WIRE 1088 560 1088 400
WIRE 1088 560 1008 560
WIRE 1088 592 1088 560
WIRE 432 608 432 560
WIRE -592 704 -592 576
WIRE -208 704 -208 528
WIRE -80 704 -80 592
WIRE 432 704 432 672
WIRE 1088 704 1088 672
WIRE 1248 704 1248 576
FLAG 512 368 0
FLAG 192 -160 +7
FLAG -80 704 0
FLAG -80 -144 +12
FLAG -432 352 0
FLAG -592 -144 +12
FLAG -432 -144 +7
FLAG 1088 400 Signal
FLAG 1248 704 0
FLAG 1248 400 Signal
FLAG 1088 704 0
FLAG 288 368 -8
FLAG -592 704 -8
FLAG 592 368 -8
FLAG 592 -160 +7
FLAG 432 704 0
FLAG 976 416 0
FLAG -208 704 0
DATAFLAG -208 304 ""
DATAFLAG 432 560 ""
DATAFLAG 816 160 ""
DATAFLAG 112 560 ""
DATAFLAG 112 560 ""
DATAFLAG -80 464 ""
DATAFLAG -80 224 ""
SYMBOL res 128 128 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL res 864 288 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL res 832 304 R0
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL cap 288 -32 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL res 304 544 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 10k
SYMBOL res 496 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL res 752 144 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R6
SYMATTR Value 20k
SYMBOL voltage -592 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 126 Left 2
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage -432 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 126 Left 2
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName V3
SYMATTR Value 7
SYMBOL cap 1008 544 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 470n
SYMBOL voltage 1248 480 R0
WINDOW 123 24 126 Left 2
WINDOW 39 24 156 Left 2
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=50
SYMATTR InstName V4
SYMATTR Value SINE(0 10m 500)
SYMBOL res 1072 576 R0
SYMATTR InstName R7
SYMATTR Value 50
SYMBOL res -96 -48 R0
SYMATTR InstName R8
SYMATTR Value 4.99k
SYMBOL voltage -592 480 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 126 Left 2
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName V5
SYMATTR Value 8
SYMBOL Opamps\\ADA4530-1 288 192 R0
SYMATTR InstName U1
SYMBOL Opamps\\ADA4530-1 592 160 R0
SYMATTR InstName U2
SYMBOL schottky 416 608 R0
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL njf -32 496 M0
SYMATTR InstName J1
SYMATTR Value J111
SYMBOL npn -144 304 R0
SYMATTR InstName Q1
SYMATTR Value BC546B
SYMBOL res -224 -48 R0
SYMATTR InstName R9
SYMATTR Value 634
SYMBOL res -224 432 R0
SYMATTR InstName R10
SYMATTR Value 562
TEXT 728 -112 Left 2 !.option plotwinsize=0
TEXT 728 -72 Left 2 !.option numdgt=14
TEXT 728 -32 Left 2 !.lib opamp.sub
TEXT 1096 32 Left 2 !.tran 50ms