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THD
R
41.036%
=
or
THD
R
0.41
=
THD
R
rms
h
RMS
=
RMS
0.775
=
RMS
h
1
2
rms
h
2
+
=
For THD
R
, we need the rms of all eight terms.
We already have the rms of the last 7, so
just rms the fundamental with it
THD
F
44.999%
=
or
THD
F
0.45
=
THD
F
rms
h
h
1
=
For THD
F
, we divide by the fundamental
rms
h
0.318
=
rms
h
h
3
2
h
5
2
+
h
7
2
+
h
9
2
+
h
11
2
+
h
13
2
+
h
15
2
+
=
For both THD values we need the rms of the harmonics other than the fundamental
h
15
1
15
2
⋅
=
h
13
1
13
2
⋅
=
h
11
1
11
2
⋅
=
h
9
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Unformatted text preview: 1 9 2 ⋅ = h 7 1 7 2 ⋅ = h 5 1 5 2 ⋅ = h 3 1 3 2 ⋅ = h 1 1 2 = The terms of the series are of the form 1/n where n is an odd integer, thus the rms values are: Solution Calculate the THD R and THD F for a square wave using the first eight terms of the series in equation 32. Problem 36: Solution...
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This note was uploaded on 03/26/2012 for the course ECET 231 taught by Professor Piller during the Spring '12 term at Purdue University.
 Spring '12
 Piller

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