Version 4
SHEET 1 880 680
WIRE 160 -16 -16 -16
WIRE 528 -16 160 -16
WIRE 208 48 96 48
WIRE 336 48 288 48
WIRE -16 64 -16 -16
WIRE 160 128 160 -16
WIRE 96 144 96 48
WIRE 128 144 96 144
WIRE 336 160 336 48
WIRE 336 160 192 160
WIRE 368 160 336 160
WIRE 448 160 432 160
WIRE -112 176 -192 176
WIRE -16 176 -16 144
WIRE -16 176 -48 176
WIRE 128 176 -16 176
WIRE 528 176 528 -16
WIRE -192 192 -192 176
WIRE 96 208 96 144
WIRE 448 208 448 160
WIRE -16 224 -16 176
WIRE -192 320 -192 272
WIRE -16 320 -16 304
WIRE -16 320 -192 320
WIRE 160 320 160 192
WIRE 160 320 -16 320
WIRE 400 320 160 320
WIRE 448 320 448 288
WIRE 448 320 400 320
WIRE 528 320 528 256
WIRE 528 320 448 320
WIRE -16 336 -16 320
WIRE 96 384 96 272
WIRE 400 464 400 320
WIRE 400 464 96 464
FLAG -16 336 0
SYMBOL Comparators\\LT1017 160 160 R0
SYMATTR InstName U1
SYMBOL res -32 48 R0
SYMATTR InstName R1
SYMATTR Value 4700
SYMBOL res -32 208 R0
SYMATTR InstName R2
SYMATTR Value 4700
SYMBOL voltage 528 160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 9
SYMBOL voltage -192 176 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 0.001
SYMATTR InstName V2
SYMATTR Value ""
SYMBOL cap -48 160 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 2µ
SYMBOL res 432 192 R0
SYMATTR InstName R3
SYMATTR Value 4700
SYMBOL res 304 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 180k
SYMBOL res 80 368 R0
SYMATTR InstName R5
SYMATTR Value 2200
SYMBOL LED 368 176 R270
WINDOW 0 72 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL cap 80 208 R0
SYMATTR InstName C2
SYMATTR Value 10µ
TEXT -320 32 Left 2 !.ac oct 10 10 100000