Version 4
SHEET 1 2564 680
WIRE 816 -272 768 -272
WIRE 1120 -272 896 -272
WIRE 768 -256 768 -272
WIRE 816 -240 816 -272
WIRE 816 -160 816 -176
WIRE 896 -160 896 -272
WIRE 896 -160 816 -160
WIRE 928 -160 896 -160
WIRE 1040 -160 1008 -160
WIRE 1120 -160 1120 -272
WIRE 1760 -160 1120 -160
WIRE 1872 -160 1840 -160
WIRE 816 -128 816 -160
WIRE 1040 -48 1040 -160
WIRE 1152 -48 1040 -48
WIRE 1296 -48 1232 -48
WIRE 1872 -48 1872 -160
WIRE 1936 -48 1872 -48
WIRE 2080 -48 2016 -48
WIRE 848 64 560 64
WIRE 1040 64 1040 -48
WIRE 1040 64 928 64
WIRE 1088 64 1040 64
WIRE 1296 80 1296 -48
WIRE 1296 80 1152 80
WIRE 1488 80 1296 80
WIRE 1680 80 1488 80
WIRE 1872 80 1872 -48
WIRE 1872 80 1760 80
WIRE 1920 80 1872 80
WIRE 1088 96 1056 96
WIRE 2080 96 2080 -48
WIRE 2080 96 1984 96
WIRE 2352 96 2080 96
WIRE 1920 112 1888 112
WIRE 1056 128 1056 96
WIRE 1888 144 1888 112
WIRE 1488 224 1488 80
WIRE 560 240 560 64
WIRE 2352 240 2352 96
WIRE 128 256 128 224
WIRE 128 256 48 256
WIRE 48 288 48 256
WIRE 128 288 128 256
WIRE 1488 336 1488 288
WIRE 1632 336 1488 336
WIRE 1696 336 1632 336
WIRE 2352 352 2352 304
WIRE 2496 352 2352 352
WIRE 2560 352 2496 352
WIRE 1488 368 1488 336
WIRE 2352 384 2352 352
WIRE 1488 512 1488 448
WIRE 2352 528 2352 464
FLAG 48 288 0
FLAG 128 144 V+
FLAG 128 368 V-
FLAG 1120 48 V+
FLAG 1120 112 V-
FLAG 560 320 0
FLAG 1056 128 0
FLAG 1488 512 0
FLAG 1632 336 Vl
FLAG 1952 64 V+
FLAG 1952 128 V-
FLAG 1888 144 0
FLAG 2352 528 0
FLAG 2496 352 Vr
FLAG 768 -256 0
FLAG 816 -48 V-
SYMBOL voltage 128 128 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage 128 272 R0
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage 560 224 R0
SYMATTR InstName V3
SYMATTR Value 0
SYMBOL res 944 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 220k
SYMBOL res 1248 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 68k
SYMBOL res 1472 352 R0
SYMATTR InstName R3
SYMATTR Value 24k
SYMBOL Opamps\\AD795 1952 32 R0
SYMATTR InstName U2
SYMBOL res 1776 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 68k
SYMBOL res 2032 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 68k
SYMBOL res 2336 368 R0
SYMATTR InstName R6
SYMATTR Value 24k
SYMBOL res 1024 -176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 68k
SYMBOL res 832 -32 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R9
SYMATTR Value 249k
SYMBOL diode 800 -240 R0
SYMATTR InstName D3
SYMATTR Value MyDiode
SYMATTR Prefix X
SYMBOL res 1856 -176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 34k
SYMBOL diode 1472 224 R0
SYMATTR InstName D2
SYMATTR Value MyDiode
SYMATTR Prefix X
SYMBOL diode 2336 240 R0
SYMATTR InstName D4
SYMATTR Value MyDiode
SYMATTR Prefix X
SYMBOL Opamps\\AD8039 1120 16 R0
SYMATTR InstName U3
TEXT 28 536 Left 2 !.dc V3 -10 10 0.1
TEXT 264 -136 Left 2 !.subckt MyDiode A K\nD A K 1N4148\n;D A K 1N914\n.ends
TEXT 256 -256 Left 2 !.lib standard.dio