Version 4
SHEET 1 880 680
WIRE -160 -16 -160 -32
WIRE 208 -16 176 -16
WIRE 320 -16 288 -16
WIRE -160 80 -160 64
WIRE 256 112 256 96
WIRE -48 128 -160 128
WIRE 96 128 -48 128
WIRE 176 128 176 -16
WIRE 176 128 96 128
WIRE 192 128 176 128
WIRE 224 128 192 128
WIRE -160 144 -160 128
WIRE 320 144 320 -16
WIRE 320 144 288 144
WIRE 384 144 320 144
WIRE 432 144 384 144
WIRE -48 160 -48 128
WIRE 224 160 176 160
WIRE 176 192 176 160
WIRE 256 208 256 176
WIRE -160 288 -160 224
WIRE -48 288 -48 224
FLAG 176 192 0
FLAG -160 288 0
FLAG -48 288 0
FLAG 256 208 0
FLAG -160 80 0
FLAG -160 -32 V+
FLAG 256 96 V+
FLAG 432 144 out
FLAG 192 128 in
DATAFLAG 96 128 "round($*10k)/10k"
DATAFLAG 384 144 "round($*10k)/10k"
SYMBOL res 192 0 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 50k
SYMBOL diode -64 224 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMBOL current -160 144 R0
SYMATTR InstName I1
SYMATTR Value 50µ
SYMBOL voltage -160 -32 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL Opamps\\opamp2 256 80 R0
SYMATTR InstName U1
SYMATTR Value TLC272
TEXT -184 392 Left 2 !.op
TEXT -200 128 Left 2 ;PD
TEXT -184 360 Left 2 !.lib tlc272.5_2
RECTANGLE Normal 0 256 -208 112 2