Version 4
SHEET 1 880 680
WIRE 224 16 -96 16
WIRE 224 48 224 16
WIRE -96 96 -96 16
WIRE 224 128 224 112
WIRE 224 144 224 128
WIRE -96 256 -96 176
WIRE 224 256 224 224
WIRE 224 256 -96 256
WIRE -96 272 -96 256
FLAG -96 272 0
FLAG 224 16 ch1
FLAG 224 128 ch2
SYMBOL res 208 128 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL LED 208 48 R0
SYMATTR InstName D1
SYMATTR Value QTLP690C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL voltage -96 80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(2.5V 2.5V 1Hz)
TEXT 216 280 Left 0 !.tran 0 2.5s 0