US3041563A - Regulating transformer with substantially uniformly distributed windings on its core and with at least two movable contact members - Google Patents

Regulating transformer with substantially uniformly distributed windings on its core and with at least two movable contact members Download PDF

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Publication number
US3041563A
US3041563A US848796A US84879659A US3041563A US 3041563 A US3041563 A US 3041563A US 848796 A US848796 A US 848796A US 84879659 A US84879659 A US 84879659A US 3041563 A US3041563 A US 3041563A
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United States
Prior art keywords
core
transformer
windings
contact members
winding
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Expired - Lifetime
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US848796A
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English (en)
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Carlsen Helge
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/06—Variable transformers or inductances not covered by group H01F21/00 with current collector gliding or rolling on or along winding

Definitions

  • the invention relates to a regulating transformer with windings distributed substantially uniformly on its core and with at least two movable contact members which, in order to tap partial voltages from .the windings, cooperate with stripped parts of the surface of the windings and in which at least a part of the windings consists of turns of at least two parallel conductors which are preferably of rectangular cross-section.
  • Regulating transformers of the aforesaid kind are known, but have the drawback that only the conductor in the outermost position is capable of being tapped by movable contact members and the regulable voltage range is therefore limited to such part of the transformer winding as is in the outermost position on the core.
  • the transformer is an autotransformer which is used with 220 volts across the total number of windings and each of the two conductors constitutes its separate half of the total winding, only a continuous regulating range of 110 volts will be available, and in accordance with the mode of connection the said range can be selected from 0 to 110 volts or from 110 volts to 220 volts.
  • the winding has to be a one-layer winding.
  • Another drawback is that the transformer core and consequently the dimensions of the transformer are increased owing to the one-layer winding if the transformer is to be designed for a predetermined strength of current which determines the cross-section of the conductors.
  • a regulable transformer in accordance with the present invention in that there are two conductors and at least two points of each of the loops of the windings are turned by 180 in relation to each other so that the conductor which on one side of the turning point is closer to one edge of the transformer core and is a farther position in relation to the other edge of the core on the other side of the turning point and conversely.
  • the stripped parts of the windings are each located on either side of one of the turning points.
  • the turns of both windings may be tapped individually by the contact members, and in the case of an autotransformer as referred to above any part of the winding may be tapped, and the regulating range becomes continuous from 0 to 220 volts.
  • the turning points are each located on the part of the winding lying opposite its adjacent edge of the iron core cross-section.
  • one of the turning points is according 3,041,563 Patented June 26, 1962 to the invention located on a part of the winding lying opposite the outer circumference of the annular core, whereby both of the stripped parts of the windings are readily accessible.
  • one of the turning points may according to the invention be located on a part of the winding lying on the inner circumference of the annular core.
  • one of the turning points may according to the invention be located on a part of the winding lying on the end surfaces of the annular core.
  • FIGURE 1 is a schematic, perspective view of a part of an embodiment of a regulating transformer according to the invention.
  • FIGURE 2 is another embodiment of same.
  • an iron core 1 of a regulating transformer is provided with substantially uniformly distributed windings, of which at least a part consists of a plurality of parallel conductors 2, 3 which are preferably of rectangular cross-section and which at least at two points of each loop of the windings are so turned by about each other that the conductor which on one side of the turning point 4 and 5, respectively, is closer to one longitudinal edge of the transformer core 1 and is in a farther position in relation to the other longitudinal edge of the core on the other side of the turning point, and conversely.
  • the transformer is in known manner provided with at least two movable contact members, such as metal springs 6, 7 or carbon rollers 8, 9 which cooperate with stripped parts 10, 11 on the surface of the windings, thereby tapping partial voltages from the windings, the individual windings being, by the way, spaced from each other by the insulating layers of the conductors.
  • the stripped parts 10, 11 of the windings 2, 3 are located on either side of one of the turning points 4, 5.
  • the contact members 6, 7 may either as shown in FIGURE 1, be slidable in known manner on rails 12, 13 which are fastened to the frame of the transformer and electrically insulated and are connected to terminals (not shown) for the tapped voltages, or the said contact members 6, 7 may, as shown in FIGURE 2, in known manner be placed on rotatable arms 14, 15 which by means of handles, 16, 17 respectively, can be turned about a mutual shaft 18.
  • Such shaft is electrically insulated and mounted in the frame of the transformer, the arms 14, 15 being insulated from each other and furthermore insulated from the shaft 18 which is connected to terminals 19, 20 respectively.
  • the turning points 4, 5 may in one embodiment according to the invention be located as shown in FIG- URE 1 on either side of the median line of the crosssection of the iron core, and if the iron core is annular as assumed in FIGURE 2 one of the turning points 4 may be located on the outer circumference of the annular core, whereas another of the turning points 5 may be located on such part of the winding as is located opposite the end surfaces of the annular core or opposite the inner circumference of the core.
  • the transformer may in known manner be provided with laminated connections 21, 22 and 23, 24 for the ends of the two windings and with permanent taps such as 25, 26.
  • the said laminated connections and the taps alike can be interconnected and connected with other electric means, as required.
  • the transformer over part of its core may be provided with the turned conductors as shown and be provided With an ordinary winding above other parts the conductors of which winding are not turned.
  • a regulating transformer with windings distributed substantially uniformly on its core and with at least two movable contact members which tap partial voltages from the windings vby cooperating with stripped parts of the surface of the windings and in which at least a part of the windings consists of turns of at least two parallel conductors of preferably rectangular cross-section, characteri sed in that the two conductors at at least two points of each of theloops of the windings are so turned by 180 in relation to each other that the conductor which is on-one side of the turning point is closer to one longitudinal edge of the transformer core and in a farther position in relation to the other longitudinal edge of the core on the other side of the turning point and conversely, the stripped parts of the windings being located on either side of one of the turning points.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)
  • Coils Or Transformers For Communication (AREA)
US848796A 1958-10-28 1959-10-26 Regulating transformer with substantially uniformly distributed windings on its core and with at least two movable contact members Expired - Lifetime US3041563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK387058AA DK88883C (da) 1958-10-28 1958-10-28 Regulertransformator med i hovedsagen jævnt på transformatorens kerne fordelte viklinger og med mindst to forskydelige kontaktorganer.

Publications (1)

Publication Number Publication Date
US3041563A true US3041563A (en) 1962-06-26

Family

ID=8127670

Family Applications (1)

Application Number Title Priority Date Filing Date
US848796A Expired - Lifetime US3041563A (en) 1958-10-28 1959-10-26 Regulating transformer with substantially uniformly distributed windings on its core and with at least two movable contact members

Country Status (5)

Country Link
US (1) US3041563A (da)
BE (1) BE584054A (da)
DE (1) DE1253356B (da)
DK (1) DK88883C (da)
GB (1) GB929879A (da)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213520A (en) * 1962-01-15 1965-10-26 Bendix Corp Method for preparing a toroid core
US3239642A (en) * 1957-08-06 1966-03-08 Eisler Paul Electrical transformers
US3243751A (en) * 1966-03-29 Vaughan wire wound toroid
US3254291A (en) * 1962-01-15 1966-05-31 Bendix Corp Multiple independently variable d.c. power supply
DE1261952C2 (de) * 1963-08-26 1973-11-22 Einstellbarer ringkern - spartransformator
US4189672A (en) * 1978-03-27 1980-02-19 Peschel Stanley G Variable transformer method and apparatus for preventing short-circuit current flow

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE633948C (de) * 1933-04-10 1936-08-12 Aeg Spartransformator fuer feinstufige Regelung durch ein Kontaktstueck
DE911862C (de) * 1934-12-25 1954-05-20 Koch & Sterzel Ag Praktisch stufenlos unter Last und ohne besondere UEberbrueckungswiderstaende regelbarer Transformator
DE1751284U (de) * 1956-08-13 1957-08-29 Dominit Werke G M B H Einstelltransformator mit aufgeteilter wicklung.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243751A (en) * 1966-03-29 Vaughan wire wound toroid
US3239642A (en) * 1957-08-06 1966-03-08 Eisler Paul Electrical transformers
US3213520A (en) * 1962-01-15 1965-10-26 Bendix Corp Method for preparing a toroid core
US3254291A (en) * 1962-01-15 1966-05-31 Bendix Corp Multiple independently variable d.c. power supply
DE1261952C2 (de) * 1963-08-26 1973-11-22 Einstellbarer ringkern - spartransformator
DE1261952B (da) * 1963-08-26 1973-11-22
US4189672A (en) * 1978-03-27 1980-02-19 Peschel Stanley G Variable transformer method and apparatus for preventing short-circuit current flow

Also Published As

Publication number Publication date
GB929879A (en) 1963-06-26
BE584054A (fr) 1960-02-15
DK88883C (da) 1960-04-25
DE1253356B (de) 1967-11-02

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