Version 4
SHEET 1 972 680
WIRE 400 0 208 0
WIRE 496 0 400 0
WIRE 656 0 560 0
WIRE 816 0 656 0
WIRE 208 32 208 0
WIRE 400 32 400 0
WIRE 656 32 656 0
WIRE 816 32 816 0
WIRE 208 144 208 112
WIRE 320 144 208 144
WIRE 400 144 400 112
WIRE 400 144 320 144
WIRE 656 160 656 112
WIRE 752 160 656 160
WIRE 816 160 816 112
WIRE 816 160 752 160
WIRE 752 176 752 160
FLAG 752 176 0
SYMBOL IsoCom 320 160 R0
SYMATTR InstName X1
SYMBOL voltage 208 16 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(2 1 1k 0)
SYMBOL res 384 16 R0
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL cap 560 -16 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value .01µ
SYMBOL voltage 656 16 R0
WINDOW 3 39 60 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 3 102 Left 0
SYMATTR InstName V2
SYMATTR Value 5
SYMATTR SpiceLine Rser=500
SYMBOL res 800 16 R0
SYMATTR InstName R2
SYMATTR Value 10k
TEXT 534 206 Left 0 !.tran .005
TEXT 312 208 Center 0 ;This circuit common is\n100 MegOhms above\nearth ground.
TEXT 496 -136 Center 0 ;The Isolated-Common symbol resistance to earth ground can be set by passing\na new value to the sub-circuit for value R1.
RECTANGLE Normal 496 288 112 -80