GB1239235A - - Google Patents

Info

Publication number
GB1239235A
GB1239235A GB1239235DA GB1239235A GB 1239235 A GB1239235 A GB 1239235A GB 1239235D A GB1239235D A GB 1239235DA GB 1239235 A GB1239235 A GB 1239235A
Authority
GB
United Kingdom
Prior art keywords
palladium
strips
film
oct
films
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
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 filed Critical
Publication of GB1239235A publication Critical patent/GB1239235A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/22—Adjustable resistors resistive element dimensions changing gradually in one direction, e.g. tapered resistive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/308—Adjustable resistors the contact sliding along resistive element consisting of a thin film
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/46—Arrangements of fixed resistors with intervening connectors, e.g. taps

Abstract

1,239,235. Variable resistors. NIPPON KOGAKU K.K. 24 Oct., 1968 [24 Oct., 1967], No. 50558/68. Heading H1S. A variable resistor for use in measuring instruments comprises an insulating plate 1 on which is formed a lower layer of a base metal for example chrome, titanium, manganese, beryllium, tantalum or nickel or an alloy thereof and an upper layer of palladium film on which a sliding contact 4 for example a phosphor bronze wire is engaged. Alternatively a further film of the base metal mixed with palladium may be sandwiched between the upper and lower layer so as to gradually reduce the concentration of palladium from the upper surface and hence achieve a reduced temperature coefficient of resistivity. The films are deposited by sputtering, and the shape of the films can be adjusted to achieve the required characteristics. In an arrangement which may be added or alternative to the above palladium over chromium layers forming parallel spaced-apart strips have on them or under them a further thin film or resistive layer having a higher resistivity than the strips. The sliding contact is of such a size that it is capable of bridging the gap between adjacent strips (Fig. 3, not shown). The layers may be covered with silicon oxide.
GB1239235D 1967-10-24 1968-10-24 Expired GB1239235A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6803767 1967-10-24

Publications (1)

Publication Number Publication Date
GB1239235A true GB1239235A (en) 1971-07-14

Family

ID=13362181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239235D Expired GB1239235A (en) 1967-10-24 1968-10-24

Country Status (3)

Country Link
US (1) US3629776A (en)
DE (1) DE1804911A1 (en)
GB (1) GB1239235A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH545577A (en) * 1971-11-19 1974-01-31
US3857689A (en) * 1971-12-28 1974-12-31 Nippon Selfoc Co Ltd Ion exchange process for manufacturing integrated optical circuits
US3838888A (en) * 1973-04-02 1974-10-01 Syncro Corp Electric brake controller
US3921118A (en) * 1973-10-01 1975-11-18 Gen Electric Variable resistor assembly
IT1063319B (en) * 1976-05-19 1985-02-11 Alfa Romeo Spa POTENTIOMETRIC REGULATOR OF A PHYSICAL SIZE THAT IS A FUNCTION ANY OF TWO OTHER INDEPENDENT PHYSICAL SIZES
US4099071A (en) * 1976-12-03 1978-07-04 Xerox Corporation Monolithic electronic scanning device
US4146957A (en) * 1977-01-17 1979-04-03 Engelhard Minerals & Chemicals Corporation Thick film resistance thermometer
DE2906888A1 (en) * 1979-02-22 1980-09-04 Degussa METHOD FOR THE PRODUCTION OF HARD SOLENOIDABLE METAL LAYERS ON CERAMICS
JPS5694602A (en) * 1979-12-27 1981-07-31 Taisei Koki Kk Chrome tantalum thin film resistor
US4311982A (en) * 1980-08-01 1982-01-19 The Yellow Springs Instrument Company, Inc. Trimmable wirewound resistance temperature transducer
FR2528222A1 (en) * 1982-06-04 1983-12-09 Jaeger Linear potentiometer with two sliders - has hairpin shaped spring which maintains contact with slider whose width is less than resistance tap spacing
US5258576A (en) * 1989-06-15 1993-11-02 Cray Research, Inc. Integrated circuit chip carrier lid
US5122620A (en) * 1989-06-15 1992-06-16 Cray Research Inc. Chip carrier with terminating resistive elements
US4949453A (en) * 1989-06-15 1990-08-21 Cray Research, Inc. Method of making a chip carrier with terminating resistive elements
USRE34395E (en) * 1989-06-15 1993-10-05 Cray Research, Inc. Method of making a chip carrier with terminating resistive elements
US5364705A (en) * 1992-06-25 1994-11-15 Mcdonnell Douglas Helicopter Co. Hybrid resistance cards and methods for manufacturing same
US6518873B1 (en) * 2001-09-13 2003-02-11 Bourns, Inc. Variable resistive element
US6828898B2 (en) * 2003-04-03 2004-12-07 Cts Corporation Fuel tank resistor card having improved corrosion resistance
BRPI0601207A (en) * 2006-03-31 2007-12-04 Alaide Pellegrini Mammana constructive disposition in equipment and methods applied to thoracic cirtometry

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734976A (en) * 1956-02-14 Variable wattage lamp socket
US2632831A (en) * 1951-05-09 1953-03-24 Pritikin Variable resistance element
US2897584A (en) * 1957-05-22 1959-08-04 Sel Rex Corp Gold plated electrical contact and similar elements
NL268503A (en) * 1960-12-09
US3339267A (en) * 1962-12-26 1967-09-05 Philips Corp Metallizing non-metals
US3274022A (en) * 1963-03-26 1966-09-20 Int Nickel Co Palladium deposition
US3290127A (en) * 1964-03-30 1966-12-06 Bell Telephone Labor Inc Barrier diode with metal contact and method of making
US3252831A (en) * 1964-05-06 1966-05-24 Electra Mfg Company Electrical resistor and method of producing the same
US3353134A (en) * 1964-08-17 1967-11-14 Amphenol Corp Resistive element and variable resistor
US3415679A (en) * 1965-07-09 1968-12-10 Western Electric Co Metallization of selected regions of surfaces and products so formed
US3495959A (en) * 1967-03-09 1970-02-17 Western Electric Co Electrical termination for a tantalum nitride film
US3458847A (en) * 1967-09-21 1969-07-29 Fairchild Camera Instr Co Thin-film resistors

Also Published As

Publication number Publication date
DE1804911A1 (en) 1969-06-19
US3629776A (en) 1971-12-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee