P1. Design a weighted-summer amplifier so that Vo = (8va +4vb + 10vc + 6va) You can start by choosing the feedback resistor (R ) then choose single resistors or construct resistor networks to satisfy the design values. Choose the resistors from the table shown since it contains common standard resistor values. Draw your final circuit diagram. 10 15 22 33 47 68 100 150 180 220 270 390 470 680 Resistors [2] 10 k 12 k 15 k 18 k 22 k 27 k 33 k 39 k 47 k 56 k 68 1k 1.2 k 1.5 k 1.8 k | | | 2.2 k 2.7 k 3.3 k 3.9 k 4.7 k 5.6 k 6.8 k 100 k 120 k 150 k 180 k 220 k 270 k 330 k 390 k 470 k 560 k 680 k 1 M 1.5 M 2.2 M 3.3 M 4.7 M 6.8 M