just 5 Use mesh analysis to find a value for Vs that results in the desired valu

Question

just 5

Use mesh analysis to find a value for Vs that results in the desired value of I_L = 7.5 mA. Find the Norton Equivalent for the source circuit, and use it to check your answer to part (i). What is the power delivered to the load for the circuit with Vs found for part (i)? Now, find a new value of Vs such that the power delivered to the load is 0.1 mW. Let Vs = 1 V. Now your goal is to maximize the power that this source circuit delivers to a load, a) How much power can this source circuit (with Vs = 1V) deliver to a load? b) What value of R_L will result in this maximum power being delivered to the load?

Explanation / Answer

5)

Rnet = 8 + 12 + 7/2 = 23.5 ohm

So, current in 8 ohm = 1/23.5 = 0.0426 A

So, current in 7 ohm = 0.0426/2 = 0.0213 A

So, current in 6 ohm = 0.0213/2 = 0.0107 A

So, power delivered =Rin = RL

Now Rin = (20 || 7 + 4 ) || 6 = (20*7/27 +4 ) || 6

= 3.63 ohm = RL

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