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2. We would like to measure a current (Is) that flows in a circuit. It could be as high as 1 A. However, the ammeter
2. We would like to measure a current (Is) that flows in a circuit. It could be as high as 1 A. However, the ammeter we have can measure only up to 100 mA. Therefore, we decide to use a current divider as seen in Fig. 2 and insert the ammeter in one of the parallel branches. Problem: You have to choose resistor values R1 and R2 so that the maximum ammeter current is 100 mA. You are supposed to use standard resistor values in a Table (page 4). Design Criteria: Power consumed in the circuit should be less than 1 W. Check: i) Once you finish your design, find a relationship between the measured current and real current ii) What is the maximum value of the current you can measure with your design? iii) Verify all your theoretical results by simulation. In your simulation model, you need to measure current Is and currents flowing in R1 and R2, the total power consumed in the circuit. Moreover, in your simulation model, you need to apply a DC source to the circuit such that Is S1 A. Please provide simulation model and results in your answer. R1 www. A Is www R2 Fig. 2: The current divider circuit 1.0M 1.0 1.1 15M 16M 1.6k 200k 2.4 TABLE 2.1 Standard resistor values for 5% and 10% tolerances (values available with a 10% tolerance shown in boldface) 10 100 1.ok 10k 100k 10M 11 110 1.1k 11k 110k 1.1M 11M 1.2 12 120 1.2k 12k 120k 1.2M 12M 1.3 13 130 1.3k 13k 130k 1.3M 13M 1.5 15 150 1.5k 15k 150k 1.5M 1.6 16 160 16k 160k 1.6M 1.8 18 180 1.8k 18k 180k 1.8M 18M 2.0 20 200 2.ok 2ok 2.0M 20M 2.2 22 220 2.2k 22k 220k 2.2M 22M 24 240 2.4k 24k 240k 2.4M 2.7 27 270 2.7k 27k 270k 2.7M 3.0 30 300 3.0k 300k 3.3 330 330k 3.6 36 360 36k 360k 3.9 39 390 4.3 43 430 4.3k 43k 4.7 47 470 470k 5.1 51 510 510k 56 560 5.6k 56k 560k 6.2 62 620 6.2k 62k 620k 6.2M 6.8 68 680 6.8k 68k 680k 6.8M 7.5 75 750 7.5k 75k 750k 7.5M 8.2 82 820 8.2k 82k 82ok 8.2M 9.1 91 9.1k 91k 910k 9.1M ok 33k 3.3k 3.6k 3.9k 39k 390k 430k 3.OM 3.3M 3.6M 3.9M 4.3M 4.7M 5.1M 5.6M 4.7k 5.1k 47k 51k 5.6 910
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