# Relationship of pulse response to frequency, help

Discussion in 'Homework Help' started by terrakota, Sep 16, 2005.

1. ### terrakota Thread Starter Well-Known Member

Feb 8, 2005
67
1
Hi,

I'm studing that relationship but i cant figure out how to solve a simple problem from my book:

What is the highest frequency component in the output of an integrator with t=10 micro seconds? assume the 5t < tw.(5 time constanst is < than pulse width).
i know the formula fh = 0.35/tr, but my answer is not right, any idea?.

the book answer is 15.9 khz, but i dont know how to achieve that result.

please excuse my poor english and thanks for any help.

2. ### Brandon Senior Member

Dec 14, 2004
306
0
Is that the actual question from the book?

Also, what subject, it may give us an idea how you need to solve it. Technically, a pulse has tons of frequency components. Numerous harmonics at odd intervals, very much like a triangle wave but with a different set of coefficients, but convoling the pulse with an integrator is going to filter out many of the higher frequencies.

3. ### terrakota Thread Starter Well-Known Member

Feb 8, 2005
67
1
yes its the book question,
the subjet im studing is "pulse response of reactive circuits" from the book "principles of electric circuits" by FLOYD