Apparatus Section 7: Alternating-current Transformer: Types of Transformers
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Source Metadata
Section titled “Source Metadata”| Field | Value |
|---|---|
| Source | Theoretical Elements of Electrical Engineering |
| Year | 1915 |
| Section ID | theoretical-elements-electrical-engineering-section-104 |
| Location | lines 18521-18665 |
| Status | candidate |
| Word Count | 801 |
| Equation Candidates In Section | 0 |
| Figure Candidates In Section | 0 |
| Quote Candidates In Section | 0 |
Opening Source Excerpt
Section titled “Opening Source Excerpt”VH. Types of Transformers 123. As the transformer consists of a magnetic circuit inter- linked with two electric circuits, two constructive arrangements are possible : The electric circuits may be inside, and surrounded by the magnetic circuit as shell, shell-type transformer; or the magnetic circuit may be arranged inside, as core, and sur- rounded by the electric circuits, core-type transformer. In their simplest form, Fig. 163 shows diagrammatically the core-type transformer, with the iron Fe as inside circular core, built up of laminations or of iron wire, and the windings Cu outside; Fig. 164 shows diagrammatically the shell-type 296 ELEMENTS OF ELECTRICAL ENGINEERING transformer, with the copper windings inside, as Cu, and the iron shell Fe wound around it, of iron wire, etc. However, the circular form 163 is used to a limited extent only,Source-Located Theme Snippets
Section titled “Source-Located Theme Snippets”Magnetism
Section titled “Magnetism”VH. Types of Transformers 123. As the transformer consists of a magnetic circuit inter- linked with two electric circuits, two constructive arrangements are possible : The electric circuits may be inside, and surrounded by the magnetic circuit as shell, shell-type transformer; or the magnetic circuit may be arranged ...Radiation / light
Section titled “Radiation / light”... nts, etc., are displaced in phase from each other by 120°. Their third harmonics therefore are displaced in phase from each other by 3 X 120°, that is, by 360°, or in other words, are in phase with each other. In Fig. 169, such triple frequency fluxes in the three cores would have no magnetic return, except by leakage through the air, that is, cannot exist, except in negligible intensity, and there- fore the core type of three-phase transformer cannot give any serious triple freque ...Alternating current
Section titled “Alternating current”... CAL ENGINEERING transformer, with the copper windings inside, as Cu, and the iron shell Fe wound around it, of iron wire, etc. However, the circular form 163 is used to a limited extent only, in small trans- formers, autotransformers and reactances, and the form 164 practically never used, and in the constructive modification from these diagrammatic types, it is often difficult to decide to which type to assign the transformer. FIG. 163. — Diagram of core type transformer. FIG. ...Dielectricity / capacity
Section titled “Dielectricity / capacity”... connection — the shell-type three-phase transformer may produce triple frequency voltages, resulting from the triple frequency ALTERNATING-CURRENT TRANSFORMER 299 flux, and under unfavorable conditions, as when connecting to a system of high capacity — which intensifies these voltages — this may lead to destructive voltages, and YY connections with shell-type three-phase transformers thus lead to serious high voltage dangers. 125. The usual shell-type construction of three-phase trans- former ...Chapter-Local Concept Hits
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| Frequency | 6 | seeded |
| Light | 1 | seeded |
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Modern Engineering Reading Prompts
Section titled “Modern Engineering Reading Prompts”- Magnetism: Track flux, reluctance, permeability, magnetizing force, and loss language against modern magnetic-circuit terminology.
- Radiation / light: Compare the chapter’s radiation vocabulary with modern electromagnetic radiation, spectral frequency, wavelength, absorption, and illumination engineering.
- Alternating current: Compare Steinmetz’s AC language with modern sinusoidal steady-state analysis, RMS quantities, phase, and phasor notation.
- Dielectricity / capacity: Check whether the passage treats capacity, condensers, displacement, or dielectric stress as field storage rather than only circuit algebra.
- Impedance / reactance: Translate historical opposition terms into modern impedance, admittance, conductance, susceptance, and complex-plane notation.
Ether-Field Interpretive Boundary
Section titled “Ether-Field Interpretive Boundary”- Magnetism: Centrifugal/divergent magnetic-field readings are interpretive overlays, not automatic historical claims.
- Radiation / light: Radiation and wave language can invite ether-field comparison, but source wording, modern radiation theory, and speculative synthesis must stay separated.
- 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.
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