Version 4
SHEET 1 880 680
WIRE 160 48 16 48
WIRE 16 112 16 48
WIRE 160 160 160 128
WIRE 16 240 16 192
WIRE 160 240 16 240
WIRE 16 272 16 240
FLAG 16 272 0
SYMBOL res 144 32 R0
SYMATTR InstName R1
SYMATTR Value 3
SYMBOL voltage 16 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL res 144 144 R0
SYMATTR InstName R2
SYMATTR Value 7
TEXT 304 208 Left 2 !.op