ES418549A1 - Electrical resistor with a polycrystalline ceramic cover and a process for its manufacture - Google Patents

Electrical resistor with a polycrystalline ceramic cover and a process for its manufacture

Info

Publication number
ES418549A1
ES418549A1 ES418549A ES418549A ES418549A1 ES 418549 A1 ES418549 A1 ES 418549A1 ES 418549 A ES418549 A ES 418549A ES 418549 A ES418549 A ES 418549A ES 418549 A1 ES418549 A1 ES 418549A1
Authority
ES
Spain
Prior art keywords
vitreous
resistors
polycrystalline ceramic
manufacture
electrical resistor
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
Application number
ES418549A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SECI
Original Assignee
SECI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SECI filed Critical SECI
Publication of ES418549A1 publication Critical patent/ES418549A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/034—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
    • H01C1/036—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath on wound resistive element
    • 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
    • Y10T29/49082—Resistor making
    • Y10T29/49087—Resistor making with envelope or housing

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
  • Glass Compositions (AREA)

Abstract

A new covering material for electrical resistors and the related process for the manufacturing of these resistors are disclosed, according to which an insulating and protective vitreous polycrystalline ceramic is obtained by controlled in-situ crystallisation of vitreous material so as to form microcrystals uniformly dispersed in the vitreous mass, the above mentioned crystallisation being carried out in the vitreous starting material prepared by powdering mixtures adapted for producing vitreous substances, already covering the ceramic support of the resistor already fitted with the resistive winding and the rheophores, by baking the assembly at a temperature of 600 DEG - 850 DEG C for 5 - 120 minutes. The invention relates also to the new class of insulated resistors thus obtained.
ES418549A 1972-09-08 1973-09-07 Electrical resistor with a polycrystalline ceramic cover and a process for its manufacture Expired ES418549A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT28983/72A IT967290B (en) 1972-09-08 1972-09-08 ELECTRIC RESISTOR AND MANUFACTURING PROCEDURE

Publications (1)

Publication Number Publication Date
ES418549A1 true ES418549A1 (en) 1976-03-16

Family

ID=11225376

Family Applications (1)

Application Number Title Priority Date Filing Date
ES418549A Expired ES418549A1 (en) 1972-09-08 1973-09-07 Electrical resistor with a polycrystalline ceramic cover and a process for its manufacture

Country Status (8)

Country Link
US (1) US3919682A (en)
CA (1) CA1011837A (en)
DE (1) DE2345102A1 (en)
ES (1) ES418549A1 (en)
FR (1) FR2209182B1 (en)
GB (1) GB1402384A (en)
IT (1) IT967290B (en)
NL (1) NL7312346A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8100816A (en) * 1981-02-19 1982-09-16 Philips Nv WIRE INJURED RESISTANCE.
GB2118928A (en) * 1982-04-21 1983-11-09 Geoffrey Cooke Enamelling process
USRE33541E (en) * 1986-05-19 1991-02-19 Surface-mounted power resistors
US4672358A (en) * 1986-05-19 1987-06-09 North American Philips Corp. Surface-mounted power resistors
JPS63198240A (en) * 1987-02-10 1988-08-16 Sony Corp Manufacture of resistor
US4926542A (en) * 1988-08-26 1990-05-22 Dale Electronic, Inc. Method of making a surface mount wirewound resistor
JP3093601B2 (en) * 1994-09-28 2000-10-03 株式会社住友金属エレクトロデバイス Ceramic circuit board
DE10122468C1 (en) * 2001-05-09 2003-03-20 Heusler Isabellenhuette Electrical resistance and process for its manufacture
JP3969987B2 (en) * 2001-10-01 2007-09-05 Ｄｏｗａホールディングス株式会社 Ceramic / alloy joints
DE102005022927A1 (en) † 2005-05-13 2006-11-16 Würth Elektronik iBE GmbH Electrical coil element produced by automatic assembly has coil wound onto a core with increased spacing between sections

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229237A (en) * 1962-02-09 1966-01-11 Cons Electronics Ind Small electrical unit with molded ceramic coating
US3392312A (en) * 1963-11-06 1968-07-09 Carman Lab Inc Glass encapsulated electronic devices

Also Published As

Publication number Publication date
FR2209182A1 (en) 1974-06-28
FR2209182B1 (en) 1975-04-11
US3919682A (en) 1975-11-11
CA1011837A (en) 1977-06-07
DE2345102A1 (en) 1974-03-21
IT967290B (en) 1974-02-28
GB1402384A (en) 1975-08-06
NL7312346A (en) 1974-03-12

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