1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Time Constant

  1. Oct 25, 2006 #1
    The problem is for a first-order instrument exposed to a step change of 100 units. If after 1.2 seconds the instrument indicated 80 units, estimate the instrument time constant.

    the problem im having is chosen the correct formula for the time constant, any suggestions?
     
  2. jcsd
  3. Oct 25, 2006 #2

    SGT

    User Avatar

    The formula is
    [tex]x(t) = A(1 - e^{-t/T})[/tex]
    where
    • x(t) is the value at time t
    • A is the final value
    • T is the time constant
     
  4. Oct 25, 2006 #3

    SGT

    User Avatar

    I don't know why my LaTex formula didn't work. Here it goes in text form:
    x(t) = A(1 - exp(-t/T))
     
  5. Oct 25, 2006 #4
    much thanks
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Time Constant
  1. Decay time constant (Replies: 9)

Loading...