Version 4
SHEET 1 880 680
WIRE 208 0 128 0
WIRE 544 0 464 0
WIRE 208 16 208 0
WIRE 544 16 544 0
WIRE 208 112 208 96
WIRE 208 112 128 112
WIRE 544 112 544 96
WIRE 544 112 464 112
WIRE 208 128 208 112
WIRE 544 128 544 112
WIRE 208 224 208 208
WIRE 208 224 128 224
WIRE 544 224 544 208
WIRE 544 224 464 224
FLAG 128 0 1
FLAG 128 112 2
FLAG 128 224 3
FLAG 464 0 4
FLAG 464 112 5
FLAG 464 224 6
SYMBOL res 192 0 R0
SYMATTR InstName R1
SYMATTR Value {Ra}
SYMBOL res 192 112 R0
SYMATTR InstName R2
SYMATTR Value {Rb}
SYMBOL res 528 0 R0
SYMATTR InstName R3
SYMATTR Value {Ra}
SYMBOL res 528 112 R0
SYMATTR InstName R4
SYMATTR Value {Rb}
TEXT 288 40 Left 1 !.param Ra = R * (1 - Val/100)
TEXT 288 168 Left 1 !.param Rb = R * (Val/100)