Abstract

A mechanical harmonic analyzer is described which will analyze oscillograms obtained from the cathode ray oscillograph when the reference field is sinusoidal. The instrument is adjustable to take care of oscillograms of various sizes. The analyzer can be used also for curves plotted on a uniform base. The particular instrument described was made to analyze up to and including the tenth harmonic.

© 1927 Optical Society of America

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References

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  1. N. V. Kipping, Electrical Communication,  3, No. 1; July1924.
  2. F. Bedell and H. J. Reich, Journal of the American Institute of Electrical Engineers,  46, No. 6, June1927.
  3. C. F. Wiebusch, Journal of Scientific Inst.,  3, No. 8. pp. 249–52; May1926.
    [Crossref]
  4. G. U. Yule, Phil. Mag.,  39, pp. 376–74; April1895.

1927 (1)

F. Bedell and H. J. Reich, Journal of the American Institute of Electrical Engineers,  46, No. 6, June1927.

1926 (1)

C. F. Wiebusch, Journal of Scientific Inst.,  3, No. 8. pp. 249–52; May1926.
[Crossref]

1924 (1)

N. V. Kipping, Electrical Communication,  3, No. 1; July1924.

1895 (1)

G. U. Yule, Phil. Mag.,  39, pp. 376–74; April1895.

Bedell, F.

F. Bedell and H. J. Reich, Journal of the American Institute of Electrical Engineers,  46, No. 6, June1927.

Kipping, N. V.

N. V. Kipping, Electrical Communication,  3, No. 1; July1924.

Reich, H. J.

F. Bedell and H. J. Reich, Journal of the American Institute of Electrical Engineers,  46, No. 6, June1927.

Wiebusch, C. F.

C. F. Wiebusch, Journal of Scientific Inst.,  3, No. 8. pp. 249–52; May1926.
[Crossref]

Yule, G. U.

G. U. Yule, Phil. Mag.,  39, pp. 376–74; April1895.

Electrical Communication (1)

N. V. Kipping, Electrical Communication,  3, No. 1; July1924.

Journal of Scientific Inst. (1)

C. F. Wiebusch, Journal of Scientific Inst.,  3, No. 8. pp. 249–52; May1926.
[Crossref]

Journal of the American Institute of Electrical Engineers (1)

F. Bedell and H. J. Reich, Journal of the American Institute of Electrical Engineers,  46, No. 6, June1927.

Phil. Mag. (1)

G. U. Yule, Phil. Mag.,  39, pp. 376–74; April1895.

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Figures (3)

Fig. 1
Fig. 1

Diagram of analyzer.

Fig. 2
Fig. 2

Mechanical harmonic analyzer for cathode oscillograms.

Fig. 3
Fig. 3

Rectangular curve.

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

P A = 0 λ y d x + 2 π n r R 0 λ y cos 2 π n x λ d x ,
A n = ( P A - a ) 2 R λ r
y = 4 h π ( sin ω x + 1 / 3 sin 3 ω x + · )