Version 4
SHEET 1 880 680
WIRE 32 16 -48 16
WIRE 176 16 32 16
WIRE 288 16 176 16
WIRE -48 32 -48 16
WIRE 32 32 32 16
WIRE 288 32 288 16
WIRE 176 112 176 16
WIRE 144 128 -128 128
WIRE -128 144 -128 128
WIRE 288 144 288 112
WIRE 288 144 208 144
WIRE 304 144 288 144
WIRE 32 160 32 112
WIRE 112 160 32 160
WIRE 144 160 112 160
WIRE 32 176 32 160
WIRE 176 192 176 176
WIRE 208 192 208 160
WIRE 208 192 176 192
WIRE 112 224 112 160
WIRE 192 224 112 224
WIRE 288 224 288 144
WIRE 288 224 272 224
WIRE -128 272 -128 224
WIRE -48 272 -48 112
WIRE 32 272 32 256
WIRE 176 272 176 192
FLAG -48 272 0
FLAG -128 272 0
FLAG 176 272 0
FLAG 32 272 0
FLAG -128 128 in
FLAG 304 144 out
IOPIN 304 144 Out
SYMBOL Comparators\\LM311 176 80 R0
SYMATTR InstName U1
SYMBOL voltage -48 16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL res 16 16 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 16 160 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL voltage -128 128 R0
WINDOW 3 -51 143 VLeft 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value SINE(2.5 1 1k)
SYMATTR InstName V2
SYMBOL res 272 16 R0
SYMATTR InstName R3
SYMATTR Value 1k
SYMBOL res 176 240 R270
WINDOW 0 28 56 VTop 2
WINDOW 3 4 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 470k
TEXT -312 32 Left 2 !.tran 5m
TEXT -312 72 Left 2 !.include LM311.sub