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IEEE Transactions on Parts, Hybrids, and Packaging

Issue 1 • Date March 1977

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Displaying Results 1 - 17 of 17
  • Who's Who in G-PHP

    Publication Year: 1977, Page(s): 1
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    Freely Available from IEEE
  • Foreword

    Publication Year: 1977, Page(s): 2
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    Freely Available from IEEE
  • The Effect of Surface Segregation of Mg on the Contact Resistance of Al-0.5-Percent Mg

    Publication Year: 1977, Page(s):31 - 35
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    Silver and Ag-W (10 weight percent W) were operated in a 5.I-A (peak) 308-V (peak) full-wave rectified dc circuit. The experimental switching system was operated 1.5 times per minute; the opening and closing velocities were 4 x 10-2 and 3 x 10-4 cm/s, respectively; the fully open contact spacing was 200 µm; and the contacts were closed for 3 s. The opening and closing of the contacts were con... View full abstract»

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  • Silver-Metal Oxide Contact Materials Fabricated by Spray Coprecipitation

    Publication Year: 1977, Page(s):35 - 41
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1872 KB)

    This paper describes the development of a highly versatile technique for fabricating improved silver-metal oxide contact materials. The spray coprecipitation method, invented at The Allen Clark Research Centre and patented [1] for Plessey Inc., offers both economic and technical advantages over existing processes for making silvercadmium oxide such as conventional internal oxidation of fabricated ... View full abstract»

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  • IOAP-A Novel Process for the Manufacture of Long-Life Silver-Cadmium Oxide AC Contact Material

    Publication Year: 1977, Page(s):42 - 51
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2136 KB)

    This paper describes a new more versatile internal oxidation technique for the manufacture of silver-cadmium oxide contact tips. The process allows precise control in producing a fine homogeneous microstrueture, it avoids the occurrence of a central denuded core in contacts and uses oxidation times which are several orders of magnitude less than in the conventional method. This novel technique ess... View full abstract»

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  • Lubricants for Separable Connectors

    Publication Year: 1977, Page(s):72 - 78
    Cited by:  Papers (16)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    About two dozen lubricating fluids were tested for use on electrical contacts on card edge or pin-and-socket connectors. The lubricants selected for screening represented a cross section of thewide variety of natural and synthetic materials available on the market. Among them were polyphenyl ethers, natural and synthetic hydrocarbons, several types of esters, polygiycols, some fluorinated material... View full abstract»

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  • Anomalous Behavior of Reed Relays Under Accelerated Life-Test Conditions

    Publication Year: 1977, Page(s):51 - 60
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1168 KB)

    Experiments on reed relays are described which show that their performance during accelerated life tests (frequency of operation 5 Hz or greater) is a function of the rate at which the relays are operated and deteriorates at higher rates. The time for which the relays are left open between operations is critical in determining the bounce, vibration, and wear. At least 90 ms are required to avoid e... View full abstract»

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  • Impact of the Contact on Electrical Systems

    Publication Year: 1977, Page(s):3 - 13
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2072 KB)

    Many electrical systems, for example, telephone systems or computer systems, use great numbers of contacts. This paper will indicate how such extensive contact usage must in turn influence the architecture of the system as a whole, to a degree that is not commonly realized. One illustration relates especially to the case of electromechanical switching, using relays and connectors; and a second exa... View full abstract»

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  • The Erosion Characteristics of Ag Contacts and the Effect of Adding a Small Percentage of W

    Publication Year: 1977, Page(s):23 - 30
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1520 KB)

    Silver and Ag-W (10 weight percent W) were operated in a 5.I-A (peak) 308-V (peak) full-wave rectified dc circuit. The experimental switching system was operated 1.5 times per minute; the opening and closing velocities were 4 x 10-2 and 3 x 10-4 cm/s, respectively; the fully open contact spacing was 200 µm; and the contacts were closed for 3 s. The opening and closing of the contacts were con... View full abstract»

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  • Contact Behavior of Telephone Relays and Connectors in Various Aggressive Environments

    Publication Year: 1977, Page(s):68 - 72
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    Air pollution contributes to the degradation of the reliability of telephone switching relays. To study pollution effects on the French crossbar telephone exchange system we conducted three studies: first, atmospheric analysis in some telephone central offices; second, surface analysis of contacts from telephone exchanges; and, third, laboratory simulation tests in order to accelerate the harmful ... View full abstract»

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  • A Test of Noble Metal Slip-Ring Alloys for Use in Inertial Guidance Platforms

    Publication Year: 1977, Page(s):79 - 84
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    Lubricated slip-ring contact materials were life-tested in a nitrogen atmosphere and in a multichemical atmosphere that simulated the gases in an inertial guidance platform. The test mode was one that maximized the effects of debris accumulations and the generation of resistive films on infrequently wiped surfaces. The contacts that were lubricated with a four-ring polyphenyl ether had lower noise... View full abstract»

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  • Oscillator Devices Using Thick-Film Technology

    Publication Year: 1977, Page(s):91 - 97
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1040 KB)

    The Electrical Engineering Department of North Carolina Agricultural and Technical State University has developed a microelectronics laboratory as a result of research involving microelectronics and metallic oxide studies over the past five years. Work on characterization and applications of metallic oxide devices is currently being conducted. This paper reports on the fabrication of eight oscilla... View full abstract»

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  • Reliability of Clad Metal Inlays for Electrical Connectors

    Publication Year: 1977, Page(s):61 - 67
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1144 KB)

    Following the prior publication [ 1 ], we tested more connector hardware of clad metal inlays the quality of which is quite close to the production level. In other words, the spring base material was all made of beryllium copper fully heat-treated after forming. The springs were punched and formed with a production the spring gaps were more uniform and all within the specified range, though in the... View full abstract»

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  • Electric and Spectroscopic Characterization of Arcing in Electrical Contacts: A Study of Erosion

    Publication Year: 1977, Page(s):18 - 23
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    Arcing in electrical contacts of telephone switching relays and the subsequent erosion have been the subject of a great deal of work. Nevertheless the problem depends on many parameters (the electrical circuit, environment, relay type, etc.) and knowledge is incomplete. The AgCu 90/10 contact used in the French CP 400 telephone switching system and, more particularly, the consequence of arcing in ... View full abstract»

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  • Standards in the Field of Electrical Contacts

    Publication Year: 1977, Page(s):14 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    This paper will cover the various organizations, particularly in the United States, that are doing work on standardization of electrical contacts. Also listed will be the various standards which have been prepared, together with their identification and source. View full abstract»

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  • Contact-Resistance Data Processing Using an On-Line Digital Microprocessor

    Publication Year: 1977, Page(s):84 - 90
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    Instrumentation which automatically measures and records dry-circuit contact resistance as lying within one of five adjustable resistance ranges has been previously devised and reported by Jedynak [ 1 ]. In this paper, we report on a major modification and improvement of the equipment involving the use of a cation and improvement of the equipment involving the use of an on-line digital microproces... View full abstract»

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  • Transformer Winding Design Presented in Programmable Form

    Publication Year: 1977, Page(s):98 - 104
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (792 KB)

    A programmable technique is shown implemented for cup-core ferrites with the primary/secondary copper losses constrained. The starting point is with a selected core and the electrical circuit in which it is imbedded. The technique assures no magnetic saturation and fills the winding space with any desired combination of taped or untaped layer windings. The result is then characterized for the desi... View full abstract»

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Aims & Scope

This Transaction ceased production in 1977. The current publication is titled IEEE Transactions on Components, Packaging, and Manufacturing Technology.

Full Aims & Scope