Version 4
SHEET 1 880 680
WIRE 80 80 48 80
WIRE 176 80 160 80
WIRE 176 96 176 80
WIRE 192 96 176 96
WIRE 464 96 384 96
WIRE 48 112 48 80
WIRE 464 112 464 96
WIRE 144 192 48 192
WIRE 192 192 144 192
WIRE 432 192 384 192
WIRE 464 192 432 192
FLAG 144 192 0
FLAG 432 192 0
SYMBOL voltage 48 96 R0
WINDOW 0 -45 10 Left 2
WINDOW 3 -34 97 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 464 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL res 176 64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 750
SYMBOL Optos\\PS2801C-1 288 144 R0
SYMATTR InstName U1
TEXT 14 244 Left 2 !.tran 1