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ttokoro
21-Topaz I
May 6, 2025 6:13 AM UTC
Solved

Make equivarent sine waveform that has maximum value = 1 and RMS = 1/sqrt(2).

Show another waveform that is equivalent to a sine wave with a maximum value of 1 and an effective value of 1/sqrt(2), and find its Fourier series so that the effective value of the Fourier series is 1/sqrt(2).

 

Below is an exsample of the answers.

 

image.pngimage.pngimage.pngimage.png

Werner_E
Werner_EAnswer
25-Diamond I
May 7, 2025 1:34 AM UTC

So here is the alternate signal:

Werner_E_0-1746582478732.png

 

 

5 replies

Werner_E
25-Diamond I
May 6, 2025 1:17 PM UTC

I'd be really curious to see how you get from em(t) with m->infinity to the expression for E using the usual RMS definition (integral) and the symbolic calculation possibilities of Prime 😈

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Werner_E
Werner_E25-Diamond IAnswer
25-Diamond I
May 7, 2025 1:34 AM UTC

So here is the alternate signal:

Werner_E_0-1746582478732.png

 

 

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ttokoro
ttokoro21-Topaz IAuthor
21-Topaz I
May 9, 2025 12:08 AM UTC

Chopped DC can make 1/sqrt(n) RMS waveform by 1/n chopping.

Another waveforms with same 1/sqrt(2) RMS are there. Red dotted lines are fundamental component of Fourier series.

If anyone has another waveform with 1/sqrt(2) RMS, please share here your waveform and Fourier series.

image.pngimage.pngimage.pngimage.pngimage.png

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t.t.
ttokoro
ttokoro21-Topaz IAuthor
21-Topaz I
May 9, 2025 12:33 AM UTC

My above answers have Average values

 image.png,.image.png

So, they are not 2/pi of sine waveform.

Therefore, the next probrem is find RMS=1/sqrt(2) and Average=2/pi but not sine waveform.

 

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t.t.
ttokoro
ttokoro21-Topaz IAuthor
21-Topaz I
May 15, 2025 12:37 PM UTC

image.pngimage.pngimage.png

image.png

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t.t.