Version 4
SHEET 1 880 680
WIRE 0 96 -64 96
WIRE 160 96 80 96
WIRE 208 96 160 96
WIRE 352 96 288 96
WIRE 496 96 352 96
WIRE -64 144 -64 96
WIRE 160 144 160 96
WIRE 352 144 352 96
WIRE 496 144 496 96
WIRE -64 272 -64 224
WIRE 160 272 160 224
WIRE 160 272 -64 272
WIRE 352 272 352 224
WIRE 352 272 160 272
WIRE 496 272 496 224
WIRE 496 272 352 272
WIRE 160 288 160 272
FLAG 160 288 0
FLAG 352 96 VO
SYMBOL voltage -64 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL current 160 224 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value 4
SYMBOL res 96 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 3
SYMBOL res 304 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 3
SYMBOL res 336 128 R0
SYMATTR InstName R3
SYMATTR Value 6
SYMBOL res 480 128 R0
SYMATTR InstName R4
SYMATTR Value 0.000000001
TEXT -98 312 Left 2 !.op