Complex Waveforms

Thread Starter

craig56

Joined Feb 27, 2007
1
I have a question for my HNC can anyone help

the question is

illustrate a complex waveform containing even and one containing odd harmonics, detailing ehich orders are prescent ?????::confused:
 

Papabravo

Joined Feb 24, 2006
13,560
So what's the problem?

A complex waveform is the sum of two or more simple waveforms.
The waveforms we are talking about are sine waves.
Lookup the definition of harmonic and you're home free.
 

Steve1992

Joined Apr 7, 2006
100
What a coincidence; I was just going to post a question on Fourier, but I found this thread, so I put it here instead:

I just want/need to know the very basics.

Am I right with the following:

Symmetrical 50 Hz square wave.
w = angular velocity = 2pif = 314 radians.
E = peak voltage of square wave.

Fundamental peak voltage = (4E / pi)sin(wt)

3rd harmonic peak voltage = (4E / 3pi)sin(3wt)

5th harmonic peak voltage = (4E / 5pi)sin(5wt)

so on....

The sum would be 4E / pi(sinwt + 1/3sin3wt + 1/5sinwt....)

My math is piss poor, so I intend to K.I.S.S.

Steve
 

hgmjr

Joined Jan 28, 2005
9,029
The link I provided in my earlier reply in this thread provides the exact problem in it. You may want to compare your answer to the one they obtained.

hgmjr
 

Dave

Joined Nov 17, 2003
6,970
I have a question for my HNC can anyone help

the question is

illustrate a complex waveform containing even and one containing odd harmonics, detailing ehich orders are prescent ?????::confused:
Are you looking for something along the line of the attachment. Showing even (real) and odd (imaginary) components at the 1st, 2nd, 3rd and 4th haramonics. I apologies for the sketchy drawing, I've just drawn it with my mouse!

Dave
 
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