ElectricCircuitTheoryHW6Fa09

ElectricCircuitTheoryHW6Fa09 - -1- R1R2R3R4VAi1v1i1Electric...

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Unformatted text preview: -1- R1R2R3R4VAi1v1i1Electric Circuit Theory Homework #6 Fall 2009 Problem 1) Practice Problem with Dependent Source For the circuit shown below, find. (a) the current i1 (b) the open circuit value of v1(c) the Thvenin resistance seen looking into terminals X-X Problem 2) The noninverting amplifier to the right is modified by the addition of R3connected from vOUTto v+. This circuit functions as a constant-current battery charger for VBB. (In other words, the circuit emulates a dc current source). a) Find an expression for i3. (Assume that negative feedback dominates the circuit). b) For VBB= 12 V, choose values for all resistors so that the battery is charged with a current of 100 mA. c) For the conditions of part (b) what is the power flow into the battery? d) How much energy will be put into the battery after 1 hour of charging? Problem 3) The maximum positive or negative output voltage amplitudes obtainable for a single op-amp is limited by its positive and negative saturation values (e.g., op-amp is limited by its positive and negative saturation values (e....
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ElectricCircuitTheoryHW6Fa09 - -1- R1R2R3R4VAi1v1i1Electric...

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