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Homework Help: RL circuit

  1. Jan 4, 2006 #1
    1-How could an RL combination be connected to produce an output voltage which is the time derivative of the input voltage?

    2-Show that taking the time derivative of a sinusoidal function [such as cos(wt+a)] always has the effecton increasing its phase pi/2.

    3-İf the internal series resistance of an inductor is not negligible , how will this change the relative phase of voltage and current fort he inductor?
  2. jcsd
  3. Jan 4, 2006 #2
    1. parallel connecet R to the input and parallel to the put L, the voltage on L is proportional to the derivative of the current which is proportional to the input voltage...
    2. you know what the derivative of cos(wt+a)? whats the phase change between sin and cos?
    Last edited: Jan 4, 2006
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