US3848208A - Encapsulated coil assembly - Google Patents
Encapsulated coil assembly Download PDFInfo
- Publication number
- US3848208A US3848208A US00407791A US40779173A US3848208A US 3848208 A US3848208 A US 3848208A US 00407791 A US00407791 A US 00407791A US 40779173 A US40779173 A US 40779173A US 3848208 A US3848208 A US 3848208A
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- flanged portion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
A coil assembly comprising an electrically insulating support, a coil winding mounted on the support, and first and second terminal members. The support includes a main portion, a flanged portion extending from the main portion, and first and second terminal receiving sections extending from the lower periphery of the flanged portion for receiving the respective first and second terminal members. The flanged portion has a first surface contiguous with the main portion, a second surface opposite the first surface, an opening extending between the first and second surfaces, and a slot within the second surface extending from a point adjacent the first terminal receiving section to the opening in the flanged portion at a point adjacent the main portion. A start wire portion of the coil winding extends from the first terminal member, within the slot in the second surface and through the opening in the flanged portion to the main portion at a point adjacent the beginning of the first turn of the coil winding. A terminating wire portion of the coil winding extends from the end of the last turn of the coil winding to the second terminal member. The coil winding is containable within a conventional molded plastic encapsulating material.
Description
Dawson et al.
United States Patent 1 1 [111 3,848,208 Nov. 12, 1974 1 1 ENCAPSULATED COIL ASSEMBLY [75] Inventors: Carlyle Steven Dawson, Normal;
Dorsey Lorraine Hardman, Lexington, both of 111.
[73] Assignee: General Electric Company, New
York, NY.
[22] Filed: Oct. 19, 1973 [21] Appl. No.: 407,791
[52] US. Cl 336/96, 336/192, 336/208 [51] Int. Cl. HOlf 27/30 [58] Field of Search 336/192, 198, 208, 96
[56] References Cited UNITED STATES PATENTS 3,189,772 6/1965 Wingler (:1 6|. 336/198 x 3,189,857 6/1965 Jones 336/198 3,343,113 9/1967 Dougal 336/208 X 3,359,395 12/1967 Bruce 336/192 X 3,359,520 12/1967 Foerster 336/192 3,609,616 9/1971 Dumeige r 336/192 3,731,245 5/1973 Roslin 336/198 Primary ExaminerThomas .l. Kozma Attorney, Agent, or Firm-S. A. Young; P. L. Schlamp; R. G. Simkins [57] ABSTRACT A coil assembly comprising an electrically insulating support, a coil winding mounted on the support, and first and second terminal members. The support includes a main portion,- a flanged portion extending from the main portion, and first and second terminal receiving sections extending from the lower periphery of the flanged portion for receiving the respective first and second terminal members. The flanged portion has a first surface contiguous with the main portion, a second surface opposite the first surface, an opening extending between the first and second surfaces, and a slot within the second surface extending from a point adjacent the first terminal receiving section to the opening in the flanged portion at a point adjacent the main portion. A start wire portion of the coil winding extends from the first terminal member, within the slot in the second surface and through the opening in the flanged portion to the main portion at a point adjacent the beginning of the first turn of the coil winding. A terminating wire portion of the coil winding extends from the end of the last turn of the coil winding to the second terminal member. The coil winding is containable within a conventional molded plastic encapsulating material.
4 Claims, 7 Drawing Figures ENCAPSULATED COIL ASSEMBLY BACKGROUND OF THE INVENTION 1. Field of The Invention This invention relates to coil assemblies and more particularly to coil assemblies adaptable for mass machine manufacture.
2. Description Of The Prior Art For many years coil assemblies have been manufactured which are comprised of coil windings and their respective supports as exemplified in US. Pat. No. 3,230,489 and 3,131,371. The coil winding generally consists of a multiplicity of wire turns which are coated with an insulative enamel material. The winding is positioned about a plastic insulative support which resembles a spool or a reel. The winding has a start wire which has its end soldered to a terminal member that is attached to the support. The start wire extends from the terminal member to a main portion of the support along an adjacent inner surface of a flanged portion which extends from the main portion. The terminating portion of the wire is soldered to another terminal member.
Quite often portions of insulative enamel wear away and adjacent turns of the coil winding are shorted together so as to reduce the effective number of turns of the coil winding. This however is a tolerable situation in view of the large number of coil turns involved. However, if the insulation of the start wire were to breakdown and the start wire were to become electrically shorted to one of the outer or latter coil turns, the usefulness of the coil assembly would be substantially destroyed, in view of the large number of intervening coil turns that would be electrically short circuited. In order to avoid the short circuiting of a large number of coil turns due to the breakdown in the insulation of the start wire, the start wire has often been taped to the inner surface of the flange, using an insulative material to separate the start wire from the remaining windings of the coil. However, the taping of the start wire to the inner surface of the flange is a manual operation, and is also time consuming and costly. Furthermore, the taping operation also renders it difficult to automate the manufacture of the coil assembly.
' An alternative to the taping of the start wire of the coil winding to the inner surface of the flange of the support is described in US. Pat. No. 3,1 17,294. In this patent, a portion of the flange is greatly increased in thickness, and a pocket is formed between the inner and outer surfaces of the flange for accomodating the start wire, and thereby insulating it from the remaining turns of the coil windings. The inner surface of the flange also has a slot therein for communicating with the pocket for. positioning the start wire in the pocket. However, the molding of a support, which has such an irregularly shaped flange, is difficult and costly. Furcoil winding to slip through the slot in the inner surface of the flange and into the pocket so as to engage the start wire, and thus still cause a short circuiting of a substantial number of coil turns.
Furthermore, in coil assemblies of the prior art, the flanged portion and terminal receiving sections of the support, and the terminal members were often shaped in such manner as to block the flow of plastic material used to encapsulate the coil winding duringthe encapsulating step.
OBJECTS OF THE INVENTION It is an object of this invention to provide a coil assembly of the type described above, wherein the short circuiting of the start wire of the coil winding to its latter coil turns is prevented.
It is another object of this invention to provide a support for a coil winding which conveniently prevents the short circuiting of a start wire to the latter turns of the coil winding described above in a simple convenient manner that does not interfere with the efficient manufacture of the final coil assembly.
It is a further object of this invention to provide a coil assembly having a support and terminal members which are adapted to facilitate the flowof plastic material during the encapsulation of the coil winding.
These and other objects of the invention will be pointed out in and understood from the following.
SUMMARY OF THE INVENTION According to a broad aspect of the invention there is provided a coil assembly comprised of an electrically insulating support, a coil winding mounted on the support, and first and second terminal members. The support includes a main portion for receiving the winding, a flanged portion which extends from the main portion, and first and second terminal receiving sections for receiving the first and second respective terminal members. The flanged portion has a first surface contiguous with the main portion, a second surface opposite the first surface, an opening extending between the first and second surfaces, and a slot within the second surface extending from a point adjacent the first terminal receiving section to the opening in the flange portion at a point adjacent the main portion. The coil winding has a start wire portion, which is heat crimped to the first terminal member, and extends from the first terminal member to within the slot in the second surface of the flanged portion, then through the opening in the flanged portion to the beginning of the first turn of the coil winding on the main portion of the support. The coil winding also has a terminating wire portion, which is heat crimped to the second terminal member, and extends from the second terminal member to the end of the last turn of the coil winding. The opening in the flanged portion and appropriate openings in the tenninal receiving sections and the terminal members provide for a decrease in resistance to the flow of plastic material during the molding and encapsulation of the coil assembly.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the encapsulated coil assembly;
FIG. 3 is a top view of the coil assembly prior to encapsulation;
FIG. 4,is an exploded bottom perspective view of the components of the coil assembly shown in FIG. 3;
FIG. 5 is a side view of a terminal member and a coil wire prior to the attachment of the coil wire to the terminal member;
FIG. 6 is an enlarged fragmentary view of the coil wire and the adjacent portions of the terminal member as the wire is in the process of being heat crimped to the terminal member; and
FIG. 7 is an enlarged fragmentary view of the coil wire and the adjacent portions of the terminal member after the wire has been heat crimped to the terminal member.
DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIGS. 1 through 4, a coil assembly 10 is comprised of a support 12, a coil winding 14, and first and second terminal members 16 and 18.
As shown in FIGS. 3 and 4, coil winding 14 is comprised of a start wire 74, a plurality of coil turns 76, and a terminating wire 78. The type of wire used, as shown in cross section in FIG. 6, in this instance, is round bare copper wire which is covered with a clear transparent polyvinyl formal enamel insulative film 82.
The procedure for the manufacture of coil assembly 10 will now be described. Coil winding 14 is first formed to be self supporting. This is accomplished by coating the polyvinyl formal film surrounding the bare copper wire with a heat and solvent sensitive thermoplastic resin. Then the wire is passed-over a felt pad saturated with denatured alcohol and heated to remove the alcohol during the actual winding of the coil. The fingers of the terminal members are positioned within the slotted walls of their respective terminal receiving sections and the formed coil turns 76 are positioned onto surfaces 23 of main portion 20 of the support. Start wire 74 is then led from the beginning of the first turn of the coil winding through opening 34 and into slot 38 of flanged portion 22, and then through channel 48 of terminal receiving section 24 to terminal member 16. Similarly terminating wire 78 extends from the end of the last turn of coil winding 14 through channel 56 of terminal receiving section 26 to terminal member 18. The respective ends of start wire portion 74 and terminating wire portion 78 are positioned between major section 60 and pronged section 66 of their respective terminal members 16 and 18, as shown in FIG. 5. Using standard heat crimping techniques and applying a typical welding pressure of 200 lbs. and welding current of approximately 4,000 amps to a surface 84 of pronged section 66 and surface 70 of major section 60 of re spective terminal members 16 and 18, pronged section 66 becomes pressed against major section 60 so as to surround wire 80, as shown in FIG. 6. Finally, the heat generated by welding process in combination with the steady application of welding pressure causes the insulative enamel film 82 surrounding wire 80 to be at least partially burned away as portions of bare copper wire become welded and crimped to their respective terminal members, as shown in FIG. 7.
Then using a standard low pressure transfer or injection molding thermosetting epoxy compound and standard molding techniques, winding 14 and support 12 become encapsulated within a molded housing 86 shown in FIG. 1. The encapsulating material also encompasses that portion of the terminal members which have the respective start and terminating wires attached thereto. The encapsulating material generally flows from top section 49 towards bottom section 28 of flanged portion 22 during the encapsulating step, wherein the material freely flows through opening 34 in flanged portion 22 and through the channel in each of the terminal receiving sections of support 12. The flow of the encapsulating material through channel 48 of the terminal receiving section 24 causes pressure to be applied to the start wire so as to introduce a tension therein which results in the firm placement of the start wire within slot 38 of flanged portion 22 during the en capsulation step. This insures that, in the final assem bly, start wire 74 is firmly positioned within slot 38 of flanged portion 22 anddoes not loosely extend therefrom. This further insures the start wire will not extend through the encapsulated molded housing, and will, in fact, still be safely insulated from coil turns 76 by flanged portion 22.
Although the invention has been described with reference to a specific embodiment thereof, numerous modifications are possible without departing from the .invention and it is desirable to cover all modifications falling within the spirit and scope of this invention.-
What we claim as new and desire to secure by letters patent of the United States is:
1. An encapsulated coil assembly comprising:
a. an electrically insulative support including a main portion, a flanged portion extending from said main portion, and first and second terminal receiving sections, said flanged portion comprising top, bottom and first and second side sections having a first surface contiguous with said main portion and a second surface opposite said first surface, said first side section having an opening extending between said first and second surfaces and a slot within said second surface, the slot extending from said bottom section at a point adjacent said first terminal receiving section to the opening in said first side section at a point adjacent said main PQ I saghfic c a dfirst and ecoa! term nal receiving sections extending from said bottom section and having a channel extending completely therethrough in a direction from the top section to the bottom section of said flanged portion;
b. first and second terminal members positioned within said first and second terminal receiving sections respectively; a coil winding surrounding said main portion, said winding including a first turn, a last turn, a start wire portion and a terminating wire portion, said start wire portion extending from said first terminal, through the channel in said first terminal receiving section to within the slot in the second surface of said flanged portion, then through the opening in said flanged portion to said main portion and the beginning of said first turn of said coil winding, said terminating wire portion extending from the end of said last turn of coil winding to said second terminal member; and d. encapsulating material surrounding said coil and said support, whereby during the encapsulation of said coil assembly, and while said encapsulating material is flowing in the direction from said top section toward said bottom section of said flanged portion and through the channel in said first terminal receiving section, sufficient pressure is applied to said start wire to insure firm placement of said start wire within the slot in the second surface of said flanged portion after completion of the encapsulation of said coil assembly.
2. A coil assembly according to claim 1, wherein each of said first and second terminal members has a major section, a pair of cantilevered fingers extending 4. A coil assembly according to claim 2, wherein said start wire portion and said terminating wire portion are fixed between said pronged section and said major section of said first and second terminal members, respectvely.
Po-ww UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,848,208 Dated November 12. 1974 lnventofls) Carlyle S. Dawson & Dorsey L. Hardman It is certified that error appears in the above-identified'patent I and that said Letters Patent are hereby' corrected as shown below:
Claim 1, column 6, line 14, before "coil" insert said Claim 4, column 6, lines 4 G 5 delete "respectvely" and insert respectively Signed and sealed this 20th day of May 1975 (SEAL) Attest:
C. MARSHALL DANN RUTH C. MASON Commissioner of Patents Attesting Officer and Trademarks mg? UNITED STATES PATENT GFFICE CERTIFICATE OF CORRECTIGN Patent No. 3,848.208 Y Dated November 12. 1974 Inventor) Carlyle S. Dewson G Dorsey L. Hardma It is certified that error appears if: the aboVe-identified-patent and that said Letters Patent are hereby corrected as shown below:
Claim 1, column 6, line 14, before "coil" insert said Claim 4, column 6, lines 4 G 5 delete "respectvely" and insert respectively.
. Signed and sealed this 20th day of May 1975 (SEAL) Attesrt:
C. MARSHALL DANN RUTH C. MASQN Commissioner of Patents Attesting Officer I and Trademarks
Claims (4)
1. An encapsulated coil assembly comprising: a. an electrically insulative support including a main portion, a flanged portion extending from said main portion, and first and second terminal receiving sections, said flanged portion comprising top, bottom and first and second side sections having a first surface contiguous with said main portion and a second surface opposite said first surface, said first side section having an opening extending between said first and second surfaces and a slot within said second surface, the slot extending from said bottom section at a point adjacent said first terminal receiving section to the opening in said main portion, each of said first and second terminal receiving sections extending from said bottom section and having a channel extending completely therethrough in a direction from the top section to the bottom section of said flanged portion; b. first and second terminal members positioned within said first and second terminal receiving sections respectively; c. a coil winding surrounding said main portion, said winding including a first turn, a last turn, a start wire portion and a terminating wire portion, said start wire portion extending from said first terminal, through the channel in said first terminal receiving section to within the slot in the second surface of said flanged portion, then through the opening in said flanged portion to said main portion and the beginning of said first turn of said coil winding, said terminating wire portion extending from the end of said last turn of coil winding to said second terminal member; and d. encapsulating material surrounding said coil and said support, whereby during the encapsulation of said coil assembly, and while said encapsulating material is flowing in the direction from said top section toward said bottom section of said flanged portion and through the channel in said first terminal receiving section, sufficient pressure is applied to said start wire to insure firm placement of said start wire within the slot in the second surface of said flanged portion after completion of the encapsulation of said coil assembly.
2. A coil assembly according to claim 1, wherein each of said first and second terminal members has a major section, a pair of cantilevered fingers extending at approximately right angles from said major section, and a pronged section extending from the juncture of said fingers and said major section.
3. A coil assembly according to claim 2, wherein the channels of said first and second terminal receiving sections are slotted to receive said fingers of said first and second terminal members respectively.
4. A coil assembly according to claim 2, wherein said start wire portion and said terminating wire portion are fixed between said pronged section and said major section of said first and second terminal members, respectvely.
Priority Applications (1)
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US00407791A US3848208A (en) | 1973-10-19 | 1973-10-19 | Encapsulated coil assembly |
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US00407791A US3848208A (en) | 1973-10-19 | 1973-10-19 | Encapsulated coil assembly |
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US00407791A Expired - Lifetime US3848208A (en) | 1973-10-19 | 1973-10-19 | Encapsulated coil assembly |
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Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3916139A (en) * | 1974-09-23 | 1975-10-28 | Spencer C Schantz | Method of soldering conductor ends to terminal |
US3998425A (en) * | 1975-05-22 | 1976-12-21 | Robertshaw Controls Company | Electromagnet assembly for safety valve |
US4151500A (en) * | 1976-11-09 | 1979-04-24 | Indesit Industria Eletrodomestici Italiana S.P.A. | Line output transformer |
US4318069A (en) * | 1979-11-23 | 1982-03-02 | Polaroid Corporation | Bobbin with terminal block designed for machine wrap |
US4368938A (en) * | 1979-09-26 | 1983-01-18 | Mabuchi Motor Co., Ltd. | Small electric motor |
US4602235A (en) * | 1984-08-20 | 1986-07-22 | Micron Industries Corp. | Transformer assembly with terminal plates in support |
US4672349A (en) * | 1985-03-29 | 1987-06-09 | Siemens Aktiengesellschaft | Coil form with integral comb-like fins on at least one end flange |
US4719440A (en) * | 1984-09-06 | 1988-01-12 | Aisin Seiki Kabushiki Kaisha | Electrical coil and terminal with clip |
US5165056A (en) * | 1990-12-15 | 1992-11-17 | Chien Heng Chien | Transformer winding form with an insertion-type leader frame |
US5175525A (en) * | 1991-06-11 | 1992-12-29 | Astec International, Ltd. | Low profile transformer |
US5226221A (en) * | 1990-11-15 | 1993-07-13 | Siemens Automotive L.P. | Method of making a hermetically sealed overmolded free-standing solenoid coil |
US5309130A (en) * | 1992-10-26 | 1994-05-03 | Pulse Engineering, Inc. | Self leaded surface mount coil lead form |
US6137202A (en) * | 1999-04-27 | 2000-10-24 | General Electric Company | Insulated coil and coiled frame and method for making same |
US20050046534A1 (en) * | 2003-07-08 | 2005-03-03 | Gilmartin Michael T. | Form-less electronic device and methods of manufacturing |
US20130057377A1 (en) * | 2010-03-15 | 2013-03-07 | Keisuke Yano | Coil terminal |
US20130154148A1 (en) * | 2011-12-16 | 2013-06-20 | Texas Instruments Incorporated | Electronic Device And Method Of Making |
EP2169818A3 (en) * | 2008-09-30 | 2016-10-19 | Rockwell Automation Technologies, Inc. | Power electronic module with an improved choke and methods of making same |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189772A (en) * | 1962-11-28 | 1965-06-15 | Gen Electric | Coil bobbin for an electric clock |
US3189857A (en) * | 1962-12-31 | 1965-06-15 | Gen Electric | Transformer bobbin |
US3343113A (en) * | 1964-08-07 | 1967-09-19 | Lucas Industries Ltd | Electrical coil assemblies |
US3359520A (en) * | 1965-08-26 | 1967-12-19 | Wabash Magnetics Inc | Lead attachment means and method for electrical coils |
US3359395A (en) * | 1966-07-25 | 1967-12-19 | Essex Wire Corp | Reed relay termingal construction |
US3609616A (en) * | 1969-11-18 | 1971-09-28 | Amp Inc | Bobbin assembly |
US3731245A (en) * | 1971-12-21 | 1973-05-01 | Northern Electric Co | Inductor bobbin with terminals |
-
1973
- 1973-10-19 US US00407791A patent/US3848208A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3189772A (en) * | 1962-11-28 | 1965-06-15 | Gen Electric | Coil bobbin for an electric clock |
US3189857A (en) * | 1962-12-31 | 1965-06-15 | Gen Electric | Transformer bobbin |
US3343113A (en) * | 1964-08-07 | 1967-09-19 | Lucas Industries Ltd | Electrical coil assemblies |
US3359520A (en) * | 1965-08-26 | 1967-12-19 | Wabash Magnetics Inc | Lead attachment means and method for electrical coils |
US3359395A (en) * | 1966-07-25 | 1967-12-19 | Essex Wire Corp | Reed relay termingal construction |
US3609616A (en) * | 1969-11-18 | 1971-09-28 | Amp Inc | Bobbin assembly |
US3731245A (en) * | 1971-12-21 | 1973-05-01 | Northern Electric Co | Inductor bobbin with terminals |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3916139A (en) * | 1974-09-23 | 1975-10-28 | Spencer C Schantz | Method of soldering conductor ends to terminal |
US3998425A (en) * | 1975-05-22 | 1976-12-21 | Robertshaw Controls Company | Electromagnet assembly for safety valve |
US4151500A (en) * | 1976-11-09 | 1979-04-24 | Indesit Industria Eletrodomestici Italiana S.P.A. | Line output transformer |
US4368938A (en) * | 1979-09-26 | 1983-01-18 | Mabuchi Motor Co., Ltd. | Small electric motor |
US4318069A (en) * | 1979-11-23 | 1982-03-02 | Polaroid Corporation | Bobbin with terminal block designed for machine wrap |
US4602235A (en) * | 1984-08-20 | 1986-07-22 | Micron Industries Corp. | Transformer assembly with terminal plates in support |
US4719440A (en) * | 1984-09-06 | 1988-01-12 | Aisin Seiki Kabushiki Kaisha | Electrical coil and terminal with clip |
US4672349A (en) * | 1985-03-29 | 1987-06-09 | Siemens Aktiengesellschaft | Coil form with integral comb-like fins on at least one end flange |
US5226221A (en) * | 1990-11-15 | 1993-07-13 | Siemens Automotive L.P. | Method of making a hermetically sealed overmolded free-standing solenoid coil |
US5165056A (en) * | 1990-12-15 | 1992-11-17 | Chien Heng Chien | Transformer winding form with an insertion-type leader frame |
US5175525A (en) * | 1991-06-11 | 1992-12-29 | Astec International, Ltd. | Low profile transformer |
WO1994010696A1 (en) * | 1992-10-26 | 1994-05-11 | Pulse Engineering, Inc. | Self leaded surface mount coil lead form |
US5309130A (en) * | 1992-10-26 | 1994-05-03 | Pulse Engineering, Inc. | Self leaded surface mount coil lead form |
US6137202A (en) * | 1999-04-27 | 2000-10-24 | General Electric Company | Insulated coil and coiled frame and method for making same |
US8098125B2 (en) | 2003-07-08 | 2012-01-17 | Pulse Electronics, Inc. | Form-less electronic device assemblies and methods of operation |
US7598837B2 (en) | 2003-07-08 | 2009-10-06 | Pulse Engineering, Inc. | Form-less electronic device and methods of manufacturing |
US20100026438A1 (en) * | 2003-07-08 | 2010-02-04 | Gilmartin Michael T | Form-less electronic device assemblies and methods of operation |
US7876189B2 (en) | 2003-07-08 | 2011-01-25 | Pulse Engineering, Inc. | Form-less electronic device assemblies and methods of operation |
US20050046534A1 (en) * | 2003-07-08 | 2005-03-03 | Gilmartin Michael T. | Form-less electronic device and methods of manufacturing |
US8368500B2 (en) | 2003-07-08 | 2013-02-05 | Pulse Electronics, Inc. | Form-less electronic device assemblies and methods of operation |
US8643456B2 (en) | 2003-07-08 | 2014-02-04 | Pulse Electronics, Inc. | Form-less electronic device assemblies and methods of operation |
EP2169818A3 (en) * | 2008-09-30 | 2016-10-19 | Rockwell Automation Technologies, Inc. | Power electronic module with an improved choke and methods of making same |
US20130057377A1 (en) * | 2010-03-15 | 2013-03-07 | Keisuke Yano | Coil terminal |
US9035735B2 (en) * | 2010-03-15 | 2015-05-19 | Omron Corporation | Coil terminal |
US20130154148A1 (en) * | 2011-12-16 | 2013-06-20 | Texas Instruments Incorporated | Electronic Device And Method Of Making |
US9378882B2 (en) * | 2011-12-16 | 2016-06-28 | Texas Instruments Incorporated | Method of fabricating an electronic circuit |
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