Chapter 9: Wave Screens. Even Harmonics
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theory and Calculation of Electric Circuits |
| Year | 1917 |
| Section ID | theory-calculation-electric-circuits-chapter-09 |
| Location | lines 16964-17631 |
| Status | candidate |
| Word Count | 1791 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 3 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”CHAPTER IX WAVE SCREENS. EVEN HARMONICS 76. The elimination of voltage and current distortion, and production of sine waves from any kind of supply wave, that is, the reverse procedure from that discussed in the preceding chapter, is accomplished by what has been called ''wave screens." Series reactance alone acts to a considerable extent as wave screen, by consuming voltage proportional to the frequency and the current, and thereby reducing the harmonics of voltage in the rest of the circuit the more, the higher their order. Let the voltage impressed upon the circuit be denoted sym- bolically by e = €i + 63 + es + ej + . . . =^i:en (29) where n denotes the order of the harmonic of absolute numerical value 6n. If, then, the reactance x (at fundamental frequency) isSource-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Waves / transmission lines
Section titled “Waves / transmission lines”CHAPTER IX WAVE SCREENS. EVEN HARMONICS 76. The elimination of voltage and current distortion, and production of sine waves from any kind of supply wave, that is, the reverse procedure from that discussed in the preceding chapter, is accomplished by what has been called ''wave screens." ...Impedance / reactance
Section titled “Impedance / reactance”... S. EVEN HARMONICS 76. The elimination of voltage and current distortion, and production of sine waves from any kind of supply wave, that is, the reverse procedure from that discussed in the preceding chapter, is accomplished by what has been called ''wave screens." Series reactance alone acts to a considerable extent as wave screen, by consuming voltage proportional to the frequency and the current, and thereby reducing the harmonics of voltage in the rest of the circuit the more, the higher their order. Let the voltage impressed upon the circuit be d ...Magnetism
Section titled “Magnetism”... armonic, in, can pass to an appreciable extent. Such resonant wave screen, however, has the serious disadvan- tage to require very high constancy of /, since the resonance condi- tion between C» and Ln depends on the square of /, 79. Even harmonics are produced in a closed magnetic circuit by the superposition of a continuous current upon the alternating wave. With an alternating sine wave impressed upon an iron magnetic circuit, saturation, or in general the lack of proportional- 158 ELECTRIC CIRCUITS ity between magnetic flux and m.m.f., prod ...Dielectricity / capacity
Section titled “Dielectricity / capacity”... upply voltage, e, reduced in propor- tion to their order, n. Even if r is large compared with x, and thus c^>lj iSnally c^ becomes negligible with n^, and the harmonics decrease with their order. 77. The screening effect of the series reactance is increased by shunting a capacity, C, beyond the inductance, L, that is, across the resistance, r, as shown in Fig. 73. By consuming current jTRRRRRTl e 1 rmmM Fig. 73. r e Fig. 74. proportional to frequency and voltage, the condenser shimts the more of the current passing through the r ...Chapter-Local Concept Hits
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| Frequency | 9 | seeded |
| Light | 1 | seeded |
Chapter-Local Glossary Hits
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Equation Candidates
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Figure Candidates
Section titled “Figure Candidates”| Candidate ID | OCR / PDF-Text Candidate | Source Location |
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theory-calculation-electric-circuits-fig-073 | rmmM Fig. 73. r e | line 17068 |
theory-calculation-electric-circuits-fig-074 | r e Fig. 74. proportional to frequency and voltage, the condenser shimts the | line 17074 |
theory-calculation-electric-circuits-fig-076 | Qii Lnf ggi Fig. 76. where / = frequency of the fundamental wave. | line 17286 |
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Waves / transmission lines: Map Steinmetz’s wave and line language onto modern distributed constants, propagation velocity, standing waves, and reflections.
- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
- Dielectricity / capacity: Check whether the passage treats capacity, condensers, displacement, or dielectric stress as field storage rather than only circuit algebra.
- Radiation / light: Compare the chapter’s radiation vocabulary with modern electromagnetic radiation, spectral frequency, wavelength, absorption, and illumination engineering.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Waves / transmission lines: Standing/traveling wave passages may support richer field interpretations; the page keeps those readings separate from verified Steinmetz wording.
- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
- Dielectricity / capacity: A Wheeler-style reading may emphasize dielectric compression, field stress, and stored potential, but this page treats that as interpretation unless Steinmetz explicitly says it.
- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
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