Version 4
SHEET 1 880 680
WIRE 80 96 0 96
WIRE 0 112 0 96
WIRE 400 128 272 128
WIRE 80 160 80 96
WIRE 128 160 80 160
FLAG 0 192 0
FLAG 128 192 0
FLAG 400 208 0
SYMBOL SpecialFunctions\\modulate 128 96 R0
WINDOW 3 16 -20 Left 0
SYMATTR InstName A1
SYMATTR Value mark=100k space=100k
SYMBOL voltage 0 96 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(0.5 .1 1k)
SYMBOL res 384 112 R0
SYMATTR InstName R1
SYMATTR Value 10k
TEXT -34 220 Left 0 !.tran 10m