US3346828A - Transformer assembly for varying electrical parameters and method of constructing the same - Google Patents
Transformer assembly for varying electrical parameters and method of constructing the same Download PDFInfo
- Publication number
- US3346828A US3346828A US388492A US38849264A US3346828A US 3346828 A US3346828 A US 3346828A US 388492 A US388492 A US 388492A US 38849264 A US38849264 A US 38849264A US 3346828 A US3346828 A US 3346828A
- Authority
- US
- United States
- Prior art keywords
- windings
- winding
- turns
- core
- different
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 10
- 238000004804 winding Methods 0.000 claims description 79
- 230000004907 flux Effects 0.000 claims description 5
- 208000034953 Twin anemia-polycythemia sequence Diseases 0.000 claims 1
- 238000010276 construction Methods 0.000 description 13
- 238000005538 encapsulation Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/10—Single-phase transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
Definitions
- the present invention relates to electrical transformer assemblies and to methods of construction of the same.
- An object of the present invention is to provide novel standardized transformer cores and pluralities of windings adapted to be assembled in various combinations from stock items to enable the ready construction of any particular transformer with any desired primary and secondary voltage rating.
- a further object is to provide a novel transformer assembly.
- Still another object is to provide a novel method or process of construction which enables a user to choose appropriate sizes of standard core and windings to fit substantially any particular requirement.
- FIG. 2 is a side elevation of modified windings for assembly coaxially in the structure of FIG. 1;
- FIGS. 3 and 4 are side elevations of modified core structures.
- a magnetic core 2' as of standard parallel-plane silicon-steel laminations, is shown in the form of a three-legged substantially E-shaped core 1'-1" 1", oppositely tapered at the free ends of the legs 1' and 1" to receive a pair of magnetic pole piece members 3' and 3".
- the members 3' and 3" are also correspondingly tapered to fit or snap into the space between the free end portions of the legs 1', 1", and 1", respectively, in order to complete the magnetic flux loop around the core 2.
- a pair of separate annular windings W and W later described, may be assembled in side-by-side relationship upon the central leg 1" of the core 2'.
- the separable magnetic pole members 3' and 3" may then be applied to lock within the spaces between the terminal portions of respective legs 1'-]l" and 1"-1"' to complete the core magnetic flux loop, as previously mentioned.
- a resilient clamp or bracket 6, shown as substantially L-shaped and provided with terminal and intermediate projections 8, 8', 8", etc., may then be applied to clamp the assembly, the projections engaging correspondingly positioned recesses 9, 9, 9", etc. in the outer peripheral surface of the core 2.
- the annular primary and secondary windings W and W of the present invention are wound upon separate coil forms and separately encapsulated in plastic or some other preferably somewhat resilient material, generally illustrated at 10 and 10, respectively.
- the inner configuration and dimensions of the windings W and W substantially correspond to those of the inner leg 1" upon which the windings are assembled.
- a tight fit as by a somewhat tapered leg, aided by the resilient character of the encapsulation 10 and 10', enables the holding of the assembled windings W and W in fixed relationship upon the leg 1", with a resilient spacer, washer or spring insert member or members 11 also employed, if desired, to prevent relative movement of the assembled windings even during vibration of, or shock to, the equipment.
- the separate core encapsulation construction of the windings W and W serves additional important functions to the fixed-position holding action above described. Not only is environmental protection thereby attained, but also considerable reduction in the necessary tolerances of the dimensions of the windings is effected while affording maximum utilization of winding space. Accurate and compact mechanical assembly is also thereby attained without the requirement for assembly skills or substantial assembly time. Facile adjustment of relative coupling of the windings and other relative adjustments, including ready interchangeability of windings, not possible with current total transformer encapsulation techniques, are also features of this construction.
- a purchaser requests a specific core size for the wattage rating desired, a corresponding coil to a specific voltage for the primary, and another corresponding coil for the secondary voltage.
- the correct winding coil can be chosen by reference to a table or graph, or the actual voltage can be printed on the coil, as later discussed.
- taps can be put on the windings so that more voltages will be available. For example, if two extra taps are put on every coil, as later explained, then every voltage within :3% can be had over a very wide voltage range. For forty wire sizes,
- the sizes of coils can be such that sub sizes will fit onto larger units to provide multiple secondaries. Identical primaries and secondaries can be supplied, or if the economics demand, center-tapped or split secondaries can be matched with non-identically constructed primary windings. Ideally, however, identical windings simplify the stocking problem.
- exposed terminals are provided, number 1, 2, 3, and 4 in connection with the primary winding W of FIG. 1, with intermediate taps providing between terminals 1 and 2, for example, substantially six percent of the total winding turns, and substantially twelve percent between terminals 3 and 4. If x represents the number of turns between terminals 2 and 3, therefore, there will be available from the single winding W voltages corresponding to the following numbers of turns: x (between terminals 2 and 3); x-l-A (between 1 and 3); x+2A (between 2 and 4); and x+3A (between 1 and 4), where A is substantially the said six percent.
- next smaller or finer Wire-size winding for stocking in accordance with a preferred embodiment of the invention, would have taps providing x+4A, x+5A and x+6A (i.e., no less than substantially six percent more turns); and the next larger or heavier wire winding would provide tap positions for xA, x-2A and x3A.
- each successive copper wire size differs from the next larger by about 26 percent and, as is more particularly evident from the following Table I, A may be closer to five or seven percent, but is herein described as substantially six percent.) This has been found to result in the possible selection of any desired set of primary and secondary voltages for different wattages, within about 3 percent.
- Table I represents the data for the selection from a plurality of standard windings W W etc., of any desired primary and secondary voltage for given wattages. With this table, one merely selects those windings having the appropriate terminal numbers which are applied to appropriate stock windings (listed vertically in the leftmost column) for the desired design. Specifically, the desired output wattage (from 100 down to 10 watts in the vertical columns from left to right) is selected and, under that wattage column, all the required primary and secondary voltages are selected. The appropriate number terminals (of the set of stock windings) is then read (in the left-most column) for the selected primary and secondary voltages.
- the sizes of coils can be such that sub sizes will fit onto larger units to provide multiple secondaries.
- Primaries and secondaries can be supplied, both of which have the 6 and 12% taps, or if the economics demand, center tapped or split secondaries can be matched with the 6 and 12% tapped primary windings. Ideally, however, identical windings simplify the stocking problem.
- the desired secondary may be selected for any desired voltage, within 3 percent.
- the Width of the core legs 1', 1", 1 may be varied to accommodate the same; the core width, indeed, being a function of the wattage, with the width doubling as the wattage doubles. Refer to FIGURE 1, dimension 12.
- the encapsulated windings W and W may be constructed, also, in pluralities or groups adapted for partially or completely overlapping coaxial construction, as illustrated by the windings W and W of FIG. 2. These may, for example, be so coaxially assembled on the leg 1 of the core 2 of FIG. 1.
- the inner configuration and dimensions of one group of windings W will correspond to the outer configuration and dimensions of the group of windings W to slip over the same, with the inner configuration and dimensions of the windings W being adapted to fit over the core leg 1". If a dual secondary winding construction is used, only two terminal taps will be needed for each.
- the windings may be connected both in series, both in parallel, or both in series with a center tap, with all adjustments achievable at the primary taps.
- the coaxial construction moreover, provides only a fraction (about one-ninth, more or less) of the leakage attendant upon the side-byside construction of FIG. 1 and involves less phase shift;
- TAB LE I Terminal Wire Number 100 90 80 70 60 50 40 30 20 10 Numbers Size of Turns Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts. To enable the coils to be more useful, moreover, taps can be put on the windings so that more voltages will be available. For example, if two extra taps are put on every coil, as previously explained, then every voltage within i3% can be had over a very wide voltage range. For forty wire sizes, this range is almost 10,000 to 1.
- the core 2' may also be modified, as desired, including not only snap-in separable pole members 3', 3", but also an interlocking fitting between the core 2 and a flat or planar separable member 3", FIG. 3; or a double E- construction, FIG. 4, with closely mating fiat surfaces for juxtaposition with negligible gap loss.
- symmetrical E-shaped cores may also be employed including non-symmetrical E cores, E and I shapes, Fs, Us, Us and wound cores.
- a method of transformer assembly that comprises winding a plurality of separate annular windings of different Winding turns and ,of a plurality of different wire sizes each of substantially 26 percent different area than the next larger wire size and with 82% of the number of Winding turns of the next smaller wire size not less than substantially six percent more than the total number of turns of the next larger wire-size winding, providing electrical access to points of windings corresponding substantially to six and twelve percent of the corresponding winding turns, assembling preselected windings over the leg of a magnetic core in one of side-by-side and overlapping coaxial relationship, closing the magnetic flux loop of the core with the preselected windings so-assembled, and clamping the assembled windings and core.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Description
Oct. 10, 1967 H. J. BUSCHMAN TRANSFORMER ASSEMBLY FOR VARYING ELECTRICAL PARAMETERS AND METHOD OF CONSTRUCTING THE SAME Filed Aug. 10, 1964 Fig. 3.
F Inventor Howard J Buschman y W M Affameys United States Patent TRANSFORMER ASSEMBIZY FOR VARYIN G ELEC- TRICAL PARAMETERS AND METHOD OF CON- STRUCTING THE SAME Howard J. Buschman, 741 Mirador Road, Vestal, N.Y. 13850 Filed Aug. 10, 1964, Ser. No. 388,492 6 Claims. (Cl. 336-192) ABSTRACT OF THE DISCLGSURE This disclosure deals with a novel transformer assembly with standard interchangeable cores and fixed sets of windings that enables a wide variety of different transformer sizes to be readily attained.
The present invention relates to electrical transformer assemblies and to methods of construction of the same.
For many decades, the wide variety of different requirements in the transformer art has defied the kind of standardization and variable-parameter stocking long feasible in connection with other types of electrical components, such as resistors, capacitors and the like. Every electrical equipment manufacturer, at one time or another, has been plagued with delays and expense attendant upon the requirements for the winding of special transformers. Underlying this difficulty is the fact that not only different Wattage ratings, but also the same wattage rating, may apply for a multiplicity of different voltages both in the primary and secondary.
An object of the present invention, however, is to provide novel standardized transformer cores and pluralities of windings adapted to be assembled in various combinations from stock items to enable the ready construction of any particular transformer with any desired primary and secondary voltage rating.
A further object is to provide a novel transformer assembly.
Still another object is to provide a novel method or process of construction which enables a user to choose appropriate sizes of standard core and windings to fit substantially any particular requirement.
Additional objects will be noted in the specification to follow and will be more particularly pointed out in connection with the appended claims.
The invention will now be described with reference to the accompanying drawing, FIG. 1 of which is an isometric view of an embodiment of the present invention,
' illustrating a side-by-side winding assembly;
FIG. 2 is a side elevation of modified windings for assembly coaxially in the structure of FIG. 1; and
FIGS. 3 and 4 are side elevations of modified core structures.
Referring to FIG. 1, a magnetic core 2', as of standard parallel-plane silicon-steel laminations, is shown in the form of a three-legged substantially E-shaped core 1'-1" 1", oppositely tapered at the free ends of the legs 1' and 1" to receive a pair of magnetic pole piece members 3' and 3". The members 3' and 3" are also correspondingly tapered to fit or snap into the space between the free end portions of the legs 1', 1", and 1", respectively, in order to complete the magnetic flux loop around the core 2.
When the magnetic pole members 3' and 3" are re moved or separated from the rest of the core 2', a pair of separate annular windings W and W later described, may be assembled in side-by-side relationship upon the central leg 1" of the core 2'. The separable magnetic pole members 3' and 3" may then be applied to lock within the spaces between the terminal portions of respective legs 1'-]l" and 1"-1"' to complete the core magnetic flux loop, as previously mentioned. A resilient clamp or bracket 6, shown as substantially L-shaped and provided with terminal and intermediate projections 8, 8', 8", etc., may then be applied to clamp the assembly, the projections engaging correspondingly positioned recesses 9, 9, 9", etc. in the outer peripheral surface of the core 2.
Unlike customary transformers, the annular primary and secondary windings W and W of the present invention, as of copper wire, are wound upon separate coil forms and separately encapsulated in plastic or some other preferably somewhat resilient material, generally illustrated at 10 and 10, respectively. In the embodiment of FIG. 1, the inner configuration and dimensions of the windings W and W substantially correspond to those of the inner leg 1" upon which the windings are assembled. A tight fit, as by a somewhat tapered leg, aided by the resilient character of the encapsulation 10 and 10', enables the holding of the assembled windings W and W in fixed relationship upon the leg 1", with a resilient spacer, washer or spring insert member or members 11 also employed, if desired, to prevent relative movement of the assembled windings even during vibration of, or shock to, the equipment.
The separate core encapsulation construction of the windings W and W serves additional important functions to the fixed-position holding action above described. Not only is environmental protection thereby attained, but also considerable reduction in the necessary tolerances of the dimensions of the windings is effected while affording maximum utilization of winding space. Accurate and compact mechanical assembly is also thereby attained without the requirement for assembly skills or substantial assembly time. Facile adjustment of relative coupling of the windings and other relative adjustments, including ready interchangeability of windings, not possible with current total transformer encapsulation techniques, are also features of this construction.
While the preceding has dealth with a facile method and construction of transformer assembly that may readily be carried out in the stock room by unskilled clerks, it has not yet been explained how the problem of providing different wattage rating transformers with any desired primary and secondary voltages is attained without requiring the stocking of an impractically large number of different windings.
If it be assumed that, say, forty different wire sizes are necessary to supply the vast majority of possible voltage and currents in certain kinds of transformer, then, with one primary and one secondary, 1600 different double coils would have to be stocked in order to attain every possible combination. Since this would have to be duplicated for each wattage size, a practically impossible number of combinations would be required in stock. In view of the separate Winding construction of the invention, only forty single windings would be stocked for each wattage size for the side by side configuration, and eighty single windings for the coaxial configuration, which is entirely practical. These winding coils are to be sold as separate components to be assembled together with a magnetic core structure and a bracket. A purchaser requests a specific core size for the wattage rating desired, a corresponding coil to a specific voltage for the primary, and another corresponding coil for the secondary voltage. The correct winding coil can be chosen by reference to a table or graph, or the actual voltage can be printed on the coil, as later discussed. To enable the coils to be more useful, moreover, taps can be put on the windings so that more voltages will be available. For example, if two extra taps are put on every coil, as later explained, then every voltage within :3% can be had over a very wide voltage range. For forty wire sizes,
this range is almost 10,000 to 1. Further, the sizes of coils can be such that sub sizes will fit onto larger units to provide multiple secondaries. Identical primaries and secondaries can be supplied, or if the economics demand, center-tapped or split secondaries can be matched with non-identically constructed primary windings. Ideally, however, identical windings simplify the stocking problem.
In accordance with the invention, exposed terminals are provided, number 1, 2, 3, and 4 in connection with the primary winding W of FIG. 1, with intermediate taps providing between terminals 1 and 2, for example, substantially six percent of the total winding turns, and substantially twelve percent between terminals 3 and 4. If x represents the number of turns between terminals 2 and 3, therefore, there will be available from the single winding W voltages corresponding to the following numbers of turns: x (between terminals 2 and 3); x-l-A (between 1 and 3); x+2A (between 2 and 4); and x+3A (between 1 and 4), where A is substantially the said six percent. With conventional wire sizes diifering in cross sectional area by about 26% the next smaller or finer Wire-size winding for stocking, in accordance with a preferred embodiment of the invention, would have taps providing x+4A, x+5A and x+6A (i.e., no less than substantially six percent more turns); and the next larger or heavier wire winding would provide tap positions for xA, x-2A and x3A. (In actual practice, each successive copper wire size differs from the next larger by about 26 percent and, as is more particularly evident from the following Table I, A may be closer to five or seven percent, but is herein described as substantially six percent.) This has been found to result in the possible selection of any desired set of primary and secondary voltages for different wattages, within about 3 percent.
Table I represents the data for the selection from a plurality of standard windings W W etc., of any desired primary and secondary voltage for given wattages. With this table, one merely selects those windings having the appropriate terminal numbers which are applied to appropriate stock windings (listed vertically in the leftmost column) for the desired design. Specifically, the desired output wattage (from 100 down to 10 watts in the vertical columns from left to right) is selected and, under that wattage column, all the required primary and secondary voltages are selected. The appropriate number terminals (of the set of stock windings) is then read (in the left-most column) for the selected primary and secondary voltages.
Further, the sizes of coils can be such that sub sizes will fit onto larger units to provide multiple secondaries. Primaries and secondaries can be supplied, both of which have the 6 and 12% taps, or if the economics demand, center tapped or split secondaries can be matched with the 6 and 12% tapped primary windings. Ideally, however, identical windings simplify the stocking problem.
As an example, for a 150-volt input primary winding in a -watt transformer, one finds 151 listed in the 100 watts vertical column, and notes that the stock winding with terminals 2 and 4 (482 turns) is appropriate. Similarly, the desired secondary may be selected for any desired voltage, within 3 percent.
Thus, the provision of pluralities of separate encapsulated standard windings for each of a plurality of different wire sizes each of substantially 26 percent different area than the next larger wire size, with taps corresponding to substantially six and twelve percent of the corresponding winding length, with facile care and bracket construction, enables the stocking of standard parts and ready assembly of transformers of any desired parametersa standardization and stocking result believed never before attainable with transformers.
As previously mentioned, multiple secondaries may be employed, and the Width of the core legs 1', 1", 1 may be varied to accommodate the same; the core width, indeed, being a function of the wattage, with the width doubling as the wattage doubles. Refer to FIGURE 1, dimension 12.
The encapsulated windings W and W moreover, may be constructed, also, in pluralities or groups adapted for partially or completely overlapping coaxial construction, as illustrated by the windings W and W of FIG. 2. These may, for example, be so coaxially assembled on the leg 1 of the core 2 of FIG. 1. In this case, the inner configuration and dimensions of one group of windings W will correspond to the outer configuration and dimensions of the group of windings W to slip over the same, with the inner configuration and dimensions of the windings W being adapted to fit over the core leg 1". If a dual secondary winding construction is used, only two terminal taps will be needed for each. The windings may be connected both in series, both in parallel, or both in series with a center tap, with all adjustments achievable at the primary taps. The coaxial construction, moreover, provides only a fraction (about one-ninth, more or less) of the leakage attendant upon the side-byside construction of FIG. 1 and involves less phase shift;
TAB LE I Terminal Wire Number 100 90 80 70 60 50 40 30 20 10 Numbers Size of Turns Watts Watts Watts Watts Watts Watts Watts Watts Watts Watts To enable the coils to be more useful, moreover, taps can be put on the windings so that more voltages will be available. For example, if two extra taps are put on every coil, as previously explained, then every voltage within i3% can be had over a very wide voltage range. For forty wire sizes, this range is almost 10,000 to 1.
but it does not permit quite the universality of such onesize coil winding form.
The core 2' may also be modified, as desired, including not only snap-in separable pole members 3', 3", but also an interlocking fitting between the core 2 and a flat or planar separable member 3", FIG. 3; or a double E- construction, FIG. 4, with closely mating fiat surfaces for juxtaposition with negligible gap loss. Clearly other configurations than symmetrical E-shaped cores may also be employed including non-symmetrical E cores, E and I shapes, Fs, Us, Us and wound cores.
Further modifications will also occur to those skilled in the art and all such are considered to fall within the spirit and scope of the invention as defined in the appended claims.
What is claimed is:
1. For use in the assembly of transformers of varying electrical parameters, a plurality of separately encapsulated annular windings of different winding turns and of difierent wire sizes each of substantially 26 percent different area than the next larger wire size, at least certain of the windings having exposed terminals including taps at points corresponding substantially to six and twelve percent of the corresponding winding length, with 82% of the number of winding turns of the next smaller wire size having no less than substantially six percent more turns than the total number of turns of the next larger wire-size winding; magnetic core means receiving pluralities of the different wire-size windings and provided with magnetic leg means and a separable magnetic member that enables assembly of preselected encapsulated windings ;of the said plurality over the leg means as coupled primary and secondary windings and completes the magnetic flux loopthereof; means for holding the preselected assembled windings in fixed relationship upon the said leg means; and bracket means clamping the core means with the windings so-assembled.
2. Apparatus as claimed in claim 1 and in which the said preselection is effected substantially in accordance with Table I herein.
3. Apparatus as claimed in claim 1 and in which groups of the said windings are of substantially identical inner dimensions corresponding substantially to the dimensions of certain of the said core leg means upon which they are assembled in side-by-side relationship.
4. Apparatus as claimed in claim 1 and in which the inner dimensions of certain of the encapsulated windings correspond substantially to the outer dimensions of other encapsulated windings the inner dimensions of which correspond substantially to the dimensions of certain of the said core leg means upon which the preselected windings are assembled in overlapping coaxial relationship.
5. A method of transformer assembly, that comprises winding a plurality of separate annular windings of different Winding turns and ,of a plurality of different wire sizes each of substantially 26 percent different area than the next larger wire size and with 82% of the number of Winding turns of the next smaller wire size not less than substantially six percent more than the total number of turns of the next larger wire-size winding, providing electrical access to points of windings corresponding substantially to six and twelve percent of the corresponding winding turns, assembling preselected windings over the leg of a magnetic core in one of side-by-side and overlapping coaxial relationship, closing the magnetic flux loop of the core with the preselected windings so-assembled, and clamping the assembled windings and core.
6. A method as claimed in claim 5 and in which the further step is performed of preselecting windings substantially in accordance with Table I herein.
References Cited UNITED STATES PATENTS 515,020 2/1894 Riker 336-2l7 X 1,360,752 11/1920 Johannesen 336-208 X 1,628,398 5/1927 Casper et al 33621O X 2,294,322 8/1942 Van Der Woude 336210 2,527,220 10/1950 Hughes 336-212 X 2,543,089 2/1951 Zimsky 336197 X 2,548,179 4/1951 Underwood 336217 X 3,043,994 7/1962 Anderson et a1 33696 X 3,110,873 11/1963 Mittermaier 336210 3,213,397 10/1965 Broverman 336--208 X LEWIS H. MYERS, Primary Examiner.
T. J. KOZMA, Assistant Examiner.
Claims (1)
1. FOR USE IN THE ASSEMBLY OF TRANSFORMERS OF VARYING ELECTRICAL PARAMETERS, A PLURALITY OF SEPARATELY ENCAPSULATED ANNULAR WINDINGS OF DIFFERENT WINDING TURNS AND OF DIFFERENT WIRE SIZES EACH OF SUBSTANTIALLY 26 PERCENT DIFFERENT AREA THAN THE NEXT LARGER WIRE SIZE, AT LEAST CERTAIN OF THE WINDINGS HAVING EXPOSED TERMINALS INCLUDING TAPS AT POINTS CORRESPONDING SUBSTANTIALLY TO SIX AND TWELVE PERCENT OF THE CORRESPONDING SUBSTANTIALLY TO SIX AND 82% OF THE NUMBER OF WINDING TURNS OF NEXT SMALLER MORE TURNS THAN THE TOTAL NUMBER OF TURNS OF THE NEXT LARGER WIRE-SIZE WINDING; MAGNETIC CORE MEANS RECEIVING PLURALITIES OF THE DIFFERENT WIRE-SIZE WINDINGS AND PROVIDED WITH MAGNETIC LEG MEANS AND A SEPARABLE MAGNETIC MEMBER THAT ENABLES ASSEMBLY OF PRESELECTED ENCAPSULATED WINDINGS OF THE SAID PLURALITY OVER THE LEG MEANS AS WINDINGS OF THE SIAD PLURALITY OVER THE LEG MEANS AS COUPLED PRIMARY AND SECONDARY WINDINGS AND COMPLETES THE MAGNETIC FLUX LOOP THEREOF; MEANS FOR HOLDING THE PRESELECTED ASSEMBLED WINDINGS IN FIXED RELATIONSHIP UPON THE SAID LEG MEANS; AND BRACKET MEANS CLAMPING THE CORE MEANS WITH THE WINDINGS SO-ASSEMBLED.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US388492A US3346828A (en) | 1964-08-10 | 1964-08-10 | Transformer assembly for varying electrical parameters and method of constructing the same |
GB34049/65A GB1099837A (en) | 1964-08-10 | 1965-08-09 | Transformer assembly and method of construction |
DE19651488795 DE1488795A1 (en) | 1964-08-10 | 1965-08-10 | Transformer structure and process for its manufacture |
FR27915A FR1459024A (en) | 1964-08-10 | 1965-08-10 | Assembly of transformers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US388492A US3346828A (en) | 1964-08-10 | 1964-08-10 | Transformer assembly for varying electrical parameters and method of constructing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
US3346828A true US3346828A (en) | 1967-10-10 |
Family
ID=23534331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US388492A Expired - Lifetime US3346828A (en) | 1964-08-10 | 1964-08-10 | Transformer assembly for varying electrical parameters and method of constructing the same |
Country Status (3)
Country | Link |
---|---|
US (1) | US3346828A (en) |
DE (1) | DE1488795A1 (en) |
GB (1) | GB1099837A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3516040A (en) * | 1968-08-05 | 1970-06-02 | Micron Sealing Corp | Transformer structure |
US3617966A (en) * | 1968-04-11 | 1971-11-02 | Anthony B Trench | Core and coil assembly |
US4663604A (en) * | 1986-01-14 | 1987-05-05 | General Electric Company | Coil assembly and support system for a transformer and a transformer employing same |
US5216402A (en) * | 1992-01-22 | 1993-06-01 | Hughes Aircraft Company | Separable inductive coupler |
US5272459A (en) * | 1992-07-20 | 1993-12-21 | Xenotronix Inc. | Standardized and self-contained transformer battery charger assembly |
US5359313A (en) * | 1991-12-10 | 1994-10-25 | Toko, Inc. | Step-up transformer |
US6118362A (en) * | 1997-01-24 | 2000-09-12 | Sundstrand Corporation | Integrated inductive assembly |
US6144277A (en) * | 1989-05-29 | 2000-11-07 | Matsui; Kazuhiro | Electric noise absorber |
US20040196128A1 (en) * | 2003-04-02 | 2004-10-07 | Illinois Tool Works Inc. | Electrical reactor assembly having center taps |
US8276279B2 (en) | 2010-08-09 | 2012-10-02 | Wahl Clipper Corporation | Hair clipper with a vibrator motor |
WO2014093272A1 (en) * | 2012-12-10 | 2014-06-19 | Grid Sentry LLC | Electrical current transformer for power distribution line sensors |
WO2016155969A3 (en) * | 2015-03-27 | 2016-11-24 | Epcos Ag | Inductive component and method for producing an inductive component |
US20200070747A1 (en) * | 2018-09-05 | 2020-03-05 | Yazaki Corporation | Routing structure of electrical wires and wire harness |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US515020A (en) * | 1894-02-20 | Andrew l | ||
US1360752A (en) * | 1918-08-05 | 1920-11-30 | Gen Electric | Stationary induction apparatus |
US1628398A (en) * | 1922-06-06 | 1927-05-10 | Western Electric Co | Magnetic coil |
US2294322A (en) * | 1940-04-06 | 1942-08-25 | Gen Ind Co | Magnetic circuits |
US2527220A (en) * | 1947-12-29 | 1950-10-24 | Gen Electric | Transformer relay |
US2543089A (en) * | 1947-09-27 | 1951-02-27 | Pennsylvania Transformer Compa | Method of making transformer cores |
US2548179A (en) * | 1948-06-01 | 1951-04-10 | Honeywell Regulator Co | Transformer |
US3043994A (en) * | 1957-10-11 | 1962-07-10 | Anderson Controls Inc | Encapsulated coil and method of making |
US3110873A (en) * | 1960-07-26 | 1963-11-12 | Gen Electric | Unitary clamping and support arrangement for coil and core assembly |
US3213397A (en) * | 1961-04-28 | 1965-10-19 | Gen Electric | Electrical winding spool for electrical apparatus |
-
1964
- 1964-08-10 US US388492A patent/US3346828A/en not_active Expired - Lifetime
-
1965
- 1965-08-09 GB GB34049/65A patent/GB1099837A/en not_active Expired
- 1965-08-10 DE DE19651488795 patent/DE1488795A1/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US515020A (en) * | 1894-02-20 | Andrew l | ||
US1360752A (en) * | 1918-08-05 | 1920-11-30 | Gen Electric | Stationary induction apparatus |
US1628398A (en) * | 1922-06-06 | 1927-05-10 | Western Electric Co | Magnetic coil |
US2294322A (en) * | 1940-04-06 | 1942-08-25 | Gen Ind Co | Magnetic circuits |
US2543089A (en) * | 1947-09-27 | 1951-02-27 | Pennsylvania Transformer Compa | Method of making transformer cores |
US2527220A (en) * | 1947-12-29 | 1950-10-24 | Gen Electric | Transformer relay |
US2548179A (en) * | 1948-06-01 | 1951-04-10 | Honeywell Regulator Co | Transformer |
US3043994A (en) * | 1957-10-11 | 1962-07-10 | Anderson Controls Inc | Encapsulated coil and method of making |
US3110873A (en) * | 1960-07-26 | 1963-11-12 | Gen Electric | Unitary clamping and support arrangement for coil and core assembly |
US3213397A (en) * | 1961-04-28 | 1965-10-19 | Gen Electric | Electrical winding spool for electrical apparatus |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3617966A (en) * | 1968-04-11 | 1971-11-02 | Anthony B Trench | Core and coil assembly |
US3516040A (en) * | 1968-08-05 | 1970-06-02 | Micron Sealing Corp | Transformer structure |
US4663604A (en) * | 1986-01-14 | 1987-05-05 | General Electric Company | Coil assembly and support system for a transformer and a transformer employing same |
US6144277A (en) * | 1989-05-29 | 2000-11-07 | Matsui; Kazuhiro | Electric noise absorber |
US5359313A (en) * | 1991-12-10 | 1994-10-25 | Toko, Inc. | Step-up transformer |
US5216402A (en) * | 1992-01-22 | 1993-06-01 | Hughes Aircraft Company | Separable inductive coupler |
US5272459A (en) * | 1992-07-20 | 1993-12-21 | Xenotronix Inc. | Standardized and self-contained transformer battery charger assembly |
US6118362A (en) * | 1997-01-24 | 2000-09-12 | Sundstrand Corporation | Integrated inductive assembly |
US20040196128A1 (en) * | 2003-04-02 | 2004-10-07 | Illinois Tool Works Inc. | Electrical reactor assembly having center taps |
US20050156701A1 (en) * | 2003-04-02 | 2005-07-21 | Duval Randall J. | Electrical reactor assembly having center taps |
US6954131B2 (en) | 2003-04-02 | 2005-10-11 | Illinois Tool Works Inc. | Electrical reactor assembly having center taps |
US7315231B2 (en) | 2003-04-02 | 2008-01-01 | Illinois Tool Works Inc. | Electrical reactor assembly having center taps |
US8276279B2 (en) | 2010-08-09 | 2012-10-02 | Wahl Clipper Corporation | Hair clipper with a vibrator motor |
US8549756B2 (en) | 2010-08-09 | 2013-10-08 | Wahl Clipper Corporation | Hair clipper with a vibrator motor |
WO2014093272A1 (en) * | 2012-12-10 | 2014-06-19 | Grid Sentry LLC | Electrical current transformer for power distribution line sensors |
WO2016155969A3 (en) * | 2015-03-27 | 2016-11-24 | Epcos Ag | Inductive component and method for producing an inductive component |
US10580562B2 (en) | 2015-03-27 | 2020-03-03 | Epcos Ag | Inductive component and method for producing an inductive component |
US20200070747A1 (en) * | 2018-09-05 | 2020-03-05 | Yazaki Corporation | Routing structure of electrical wires and wire harness |
US10773662B2 (en) * | 2018-09-05 | 2020-09-15 | Yazaki Corporation | Routing structure of electrical wires and wire harness |
Also Published As
Publication number | Publication date |
---|---|
GB1099837A (en) | 1968-01-17 |
DE1488795A1 (en) | 1969-04-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3346828A (en) | Transformer assembly for varying electrical parameters and method of constructing the same | |
US3652968A (en) | Telescoped electrical windings and method of making same | |
US2909742A (en) | Machine wound magnetic core | |
US3089106A (en) | Printed circuit coil | |
US5619400A (en) | Magnetic core structures and construction techniques therefor | |
JPH05299270A (en) | Electromagnetic device and electromagnetic core structure | |
DE3718383A1 (en) | HIGH FREQUENCY POWER TRANSMITTER | |
US4806896A (en) | Electromagnetic shield for electromagnetic apparatus | |
US20050258927A1 (en) | Simplified harmonic-free constant-voltage transformer | |
US3339163A (en) | Split or separable core current transformers | |
US3321725A (en) | Current transformers having multiturn primary windings | |
US1849485A (en) | Transformer | |
US3132318A (en) | Three leg fractional turn transformer with winding leads and insulation between core parts | |
JPH0115142Y2 (en) | ||
US2975357A (en) | Transformer | |
US1227415A (en) | Transformer. | |
CN114244073B (en) | Voltage-expanding ring transformer and magnetic integration structure and method of voltage-expanding ring transformer and resonant converter | |
US3717831A (en) | Transformer having series-multiple windings | |
US3691496A (en) | Helitran winding for electrical inductive apparatus | |
JP2956051B1 (en) | Inductance element | |
US3906421A (en) | Rod core choke for suppressor application in phase-gating circuits | |
US3668450A (en) | Variable induction device | |
KR200203657Y1 (en) | Spring-type dual coil of a transformer | |
US2931000A (en) | High precision electrical resistor device with minimized inductance | |
JPH06120063A (en) | Laminated coil device |