A client has hired you to design a power supply that can serve as a DC voltage reference for their product. The ability to switch between two different voltage references (V). V, and V, is required. The product will not tolerate mea instantaneous changes in reference, so some kind of switching transient is necessary The circuit to be used for this design is shown in Figure 1. V, is the supply voltage available to you, and V, is the voltage you must design to switch between V, and V, (see Figure 2). The client's product will draw negligible current from the reference, so it can be treated as an open circuit connected across Var (e. you can ignore the product in the design of the reference circuit) Vs ww R1 VREE www Rz R3. Figure 1:Transient Circuit Design Figure 2: VSwitching between V, AND V, Your job is to design R., R., R., and C to meet the following specifications: V, 15.6V (use the 15 V supply on the NI ELVIS prototyping board) 8.5VSV, 595V 2VV, 3V 1mssts5ms 400s R, RR, 55k where t represents the time constant of the switching transients. The switch opening time constant and switch closing time constant do not have to be equal, but they must both fall within the specified range Your grade is dependent on the following (no lab report is required): Successful design of R, R., R., and C. Successful justification to the T.A. your selection of R, R., R., and C (via mathematics, simulation, and/or answering your T.A's verbal questions-DO NOT USE MULTISIM AS A TRAIL AND ERROR ONLY) Successful construction of your design using the NI ELVIS lab equipment. Successful demonstration of the operation of your design using the NI ELVIS osciloscope, proving you've met the requirements for V, V, and the time constants. Design Hints: Design Vy to equal V, when the switch is open and V, when the switch is closed. Draw the steady-state circuits for the switch in the open position and for the switch in the closed position. Use these two circuits to design your resistors Consider the resistors and capacitors available in lab when designing your circuit. You may connect multiple resistors in series and/or parallel to build one or more of your designed resistors: R, R., and/or R, but st use more than four resistors to build any one of your designed resistors