Version 4
SHEET 1 880 680
WIRE 80 0 -32 0
WIRE 128 0 80 0
WIRE 192 0 128 0
WIRE 288 0 192 0
WIRE 288 16 288 0
WIRE -32 32 -32 0
WIRE 592 48 560 48
WIRE 704 48 672 48
WIRE -32 112 -32 96
WIRE 288 112 288 96
WIRE 624 144 624 128
WIRE 128 160 128 0
WIRE 128 160 -32 160
WIRE 288 160 128 160
WIRE 384 160 288 160
WIRE 448 160 384 160
WIRE 560 160 560 48
WIRE 560 160 528 160
WIRE 592 160 560 160
WIRE 704 176 704 48
WIRE 704 176 656 176
WIRE 768 176 704 176
WIRE 816 176 768 176
WIRE 288 192 288 160
WIRE 384 192 384 160
WIRE 592 192 560 192
WIRE 624 224 624 208
WIRE -32 272 -32 160
WIRE 128 272 128 160
WIRE 288 272 288 256
WIRE 336 272 288 272
WIRE 384 272 384 256
WIRE 384 272 336 272
WIRE 336 304 336 272
WIRE 704 304 704 288
WIRE 704 400 704 384
WIRE -96 416 -208 416
WIRE -32 416 -32 352
WIRE -32 416 -96 416
WIRE 16 416 -32 416
WIRE 128 416 128 336
WIRE 128 416 96 416
WIRE 336 416 336 384
WIRE 336 416 128 416
WIRE 448 416 336 416
WIRE 560 416 560 192
WIRE 560 416 448 416
WIRE -208 448 -208 416
WIRE -208 560 -208 528
FLAG -208 560 0
FLAG -32 112 0
FLAG 288 112 0
FLAG 704 400 0
FLAG 816 176 out
FLAG 704 288 V+
FLAG 624 128 V+
FLAG 624 224 0
FLAG -96 416 in
FLAG 192 0 VREF
DATAFLAG 80 0 ""
DATAFLAG 448 416 ""
DATAFLAG 768 176 ""
DATAFLAG -208 416 ""
SYMBOL voltage -208 432 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value SINE(2.5 10m 50)
SYMBOL res -48 368 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL res 112 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 200
SYMBOL res 320 288 R0
SYMATTR InstName R3
SYMATTR Value 50
SYMBOL diode 368 192 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 304 256 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL cap 112 272 R0
SYMATTR InstName C1
SYMATTR Value 2200p
SYMBOL cap -48 32 R0
SYMATTR InstName C2
SYMATTR Value 2200p
SYMBOL voltage 288 0 R0
SYMATTR InstName V3
SYMATTR Value 2.5
SYMBOL voltage 704 288 R0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL Opamps\\UniversalOpamp2 624 176 R0
SYMATTR InstName U1
SYMBOL res 432 176 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL res 576 64 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 9.09k
TEXT -224 -104 Left 2 !.tran 1
TEXT -224 -64 Left 2 ;.ac dec 100 100 1meg