Using an Inductor to Moderate Load Current

by Seth Donelson

Submitted : Spring 2009

The first step is to prove mathematically that the model for an RL circuit can be written as E/L=iR/L + di/dt. I proved mathematically that the model for an RL circuit could be written as E/L=iR/L + di/dt. Then substitute values into the solution for a first order linear differential equation and then integrate that equation. Next, graph the current that results from inductances of 100 and 1000, and then graph the current that would result if no inductor was used. The summation of these results is that an inductor can be used to keep the current reasonably constant in the load when the source voltage fluctuates. The consistency of the current in the load increases as the inductance increases.

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