US3513368A - Electric condenser with resistance incorporated therein - Google Patents

Electric condenser with resistance incorporated therein Download PDF

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Publication number
US3513368A
US3513368A US735387A US3513368DA US3513368A US 3513368 A US3513368 A US 3513368A US 735387 A US735387 A US 735387A US 3513368D A US3513368D A US 3513368DA US 3513368 A US3513368 A US 3513368A
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Prior art keywords
condenser
metallized
zones
strip
resistance
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Expired - Lifetime
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US735387A
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English (en)
Inventor
Pierre Boyer
Hans Blumer
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Condis SA
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Condensateurs Fribourg SA
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations

Definitions

  • circuits known as spark arresters used to protect electric contacts and relays, are constituted by the series connection of a condenser and of a resistance. It is also recommended to place a discharge resistance in parallel with the antistatic condenser in order to avoid the danger of an electric shock to persons called upon to manipulate the apparatus.
  • the purpose of the invention is precisely to avoid the above-mentioned disadvantages.
  • the invention has for its object an electric condenser constituted by at least two superimposed strips of insulating material, at least one of which is metallized, and characterized by the fact that the metallized band has at least two distinct metallized zones on the same side of the strip connected by at least one electrical resistance.
  • FIGS. 1a and 1b show respectively a plan view and a cross section of a condenser of usual construction.
  • FIGS. 2a and 2b show respectively a plan view and a cross sectional view of a condenser with resistances incorporated in parallel.
  • FIG. 3 shows the electrical circuit of the condenser of FIG. 2a
  • FIGS. 4a and 4b show respectively a plan view and a cross section of a condenser with the resistances incorporated in series.
  • FIG. 5 shows schematically the electrical circuit of the condenser according to FIG. 4.
  • FIG. 6 show-s a particular configuration of resistance element which may be incorporated in the condenser.
  • FIGS. 1a and lb show schematically the construction of a condenser of conventional construction.
  • a condenser can comprise a dielectric formed of one or several insulating layers wound or not upon one another.
  • the condensers shown comprises two strip of insulating material 1 and 2 constituting the dielectric of the condenser, each of these bands carrying plates 3, 4, respectively, obtained for example by metallic deposition by means of a vacuum evaporation process.
  • Strips 1 and 2 are laterally shifted one relative to the other in such a way that the metallized zone of one of the strips overlaps the other strip whose ofiS-set part olfers a marginal zone which is non metallized or demetallized, 5, 6 respectively, in order to avoid all short-circuits between zones 3 and '4 of the two strips.
  • Such a construction is advantageously poorly inductive for the off-set Zones are connected after winding the condenser by a metallizing process ensuring excellent contact between the flank of the coil of the condenser and the connecting wire which is later soldered thereon.
  • FIGS. 2a and 2b The condenser shown in FIGS. 2a and 2b comprises two resistances incorporated in parallel.
  • FIG. 3 shows the schematic circuit of this condenser.
  • This condenser is made according to the same constructive principles as the condenser shown in FIGS 1a and 1b. It comprises two insulated strips 2.1 and 22 carrying plates 23 and 24 respectively obtained by a suitable metallizing process. Strips 21 and 22 however are no longer laterally shifted one relative to the other but juxtaposed edge to edge.
  • the insulating strips carry also a metallized marginal strip 25, 26 respectively, separated from the main metallized zone by a non metallized zone 27, 28 respectively.
  • zone 25 will thus be electrically connected with zone 24 while zone 26 will be connected to zone 23. It sufiices then to connect the two metallized zones of a same strip by resistance elements such as 29 and 30 to obtain a condenser with two resistances incorporated in parallel with the condenser in accordance with the circuit diagram in FIG. 3.
  • Resistance elements 29 and 30' can be obtained either by metallic deposition or by removal of metal according to known processes.
  • FIGS. 4a and 4b show schematically the way in which it is possible to make a condenser with two resistances incorporated in series corresponding to the circuit diagram represented in FIG. 5.
  • the condenser again comprises two insulating strips 41 and 42 carrying a metallized zone, 43 and 44 respectively, whose two lateral edges are located at a certain distance from the edges of the insulating strips.
  • the opposed edges of the insulating strips carry on the one side a non metallized zone 45, 46 respectively, and on the other side a metallized zone 47, 48 respectively, zones 47 and 48 being separated from the main metallized zone by a non metallized zone.
  • the insulating strips are again laterally shifted one relative to the other.
  • the two metallized zones of a same strip are connected by resistance elements 49, 50 respectively.
  • the condenser being Wound and terminated in the same manner as the condenser described with respect to FIGS. 1a and 1b, it is noted that the connecting wires of the condenser are no longer directly connected to plates 43 and 44 but to marginal metallized zones 47 and 48 in such a way that there is obtained a condenser comprising two resistances in series in conformity with the circuit diagram of FIG. 5.
  • the resistance element shown in FIG. 6 comprises a rectangular loop 80 connected by a certain number of arms 81 to each of the metallized zones. It is thus possible to adjust the resistance to the given rating by cutting one or several arms 81 along dotted line 82.
  • the insulating strips can be of paper which is lacquered or not, or constituted by synthetic films made of thermoplastic material based for example on polystyrene, polypropylene, polycarbonate, terephthalate, polyethylene or polytetrafluorethylene.
  • the metallized zones can be obtained by a vacuum evaporation process of one of the following metals: Ag, Al, Bi, Cd, Cu, Ni, Pb, Sb, Sn, Zn or of alloys of these metals.
  • the thickness of these metallized zones will vary according to the cases and the applications between 0.001 and 1.5 micron.
  • the invention is applicable to wound condensers as well as to condensers which are not wound.
  • a capacitor comprising, two superposed strips of insulating material wound one upon the other and of equal width, each strip having two distinct metallized zones on one side thereof and a resistance zone intermediate said two zones, each of said two zones on a strip having a width corresponding to a width less than .4 extending to the edges of the strip, and one of said two zones having greater width than the other zone.
  • a capacitor according to claim 1 in which said strips, in which said one zone extending to the edge comprises a narrower one of the two zones.
  • a capacitor according to claim 2 in which said metallized ones are disposed with the insulating material of one of the strips being disposed overlying the metallized zones of the other, and the narrower zone of each strip being at an edge of its strip opposite to the edge of the other strip.
  • a capacitor according to claim 3 in which a wider one of said two zones on each strip does not extend to the edges of said strip.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
US735387A 1967-06-09 1968-06-07 Electric condenser with resistance incorporated therein Expired - Lifetime US3513368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH822267A CH474826A (fr) 1967-06-09 1967-06-09 Condensateur électrique avec résistance incorporée

Publications (1)

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US3513368A true US3513368A (en) 1970-05-19

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US (1) US3513368A (fr)
CH (1) CH474826A (fr)
FR (1) FR1542321A (fr)
GB (1) GB1186644A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748571A (en) * 1972-09-07 1973-07-24 Kulite Semiconductors Products Pressure sensitive transducers employing capacitive and resistive variations
US3859592A (en) * 1972-05-08 1975-01-07 Siemens Ag Electrical RC element
DE2714167A1 (de) * 1977-03-30 1978-10-05 Siemens Ag Aluminium-flachelektrolytkondensator und verfahren zu seiner herstellung
US4434452A (en) 1980-01-18 1984-02-28 Matsushita Electric Industrial Co., Ltd. Metallized film capacitor
US4494168A (en) * 1981-01-07 1985-01-15 Matsushita Electric Industrial Company, Limited Roll type capacitor having segmented metallized areas
US5447779A (en) * 1990-08-06 1995-09-05 Tokai Electronics Co., Ltd. Resonant tag and method of manufacturing the same
US5589251A (en) * 1990-08-06 1996-12-31 Tokai Electronics Co., Ltd. Resonant tag and method of manufacturing the same
US5695860A (en) * 1990-08-06 1997-12-09 Tokai Electronics Co., Ltd. Resonant tag and method of manufacturing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844577C2 (de) * 1978-10-13 1984-06-14 Standard Elektrik Lorenz Ag, 7000 Stuttgart Widerstands-Kondensator-Einheit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE523936C (de) * 1930-01-14 1931-05-13 Siemens Schuckertwerke Akt Ges Elektrischer Kondensator mit die Elektrodenraender verbindenden halbleitenden Schichten
US2940035A (en) * 1955-02-14 1960-06-07 Gulton Ind Inc Electrical component of ceramic combined with resistor applied to the surface thereof
US3266121A (en) * 1963-02-14 1966-08-16 Illinois Tool Works Method of making a capacitorresistor construction
US3275914A (en) * 1963-09-19 1966-09-27 Sangamo Electric Co Electric capacitor having dielectric spacer of reconstituted mica interleaved with solid plastic
US3419770A (en) * 1967-02-08 1968-12-31 Matsushita Electric Ind Co Ltd Metallized paper condensers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE523936C (de) * 1930-01-14 1931-05-13 Siemens Schuckertwerke Akt Ges Elektrischer Kondensator mit die Elektrodenraender verbindenden halbleitenden Schichten
US2940035A (en) * 1955-02-14 1960-06-07 Gulton Ind Inc Electrical component of ceramic combined with resistor applied to the surface thereof
US3266121A (en) * 1963-02-14 1966-08-16 Illinois Tool Works Method of making a capacitorresistor construction
US3275914A (en) * 1963-09-19 1966-09-27 Sangamo Electric Co Electric capacitor having dielectric spacer of reconstituted mica interleaved with solid plastic
US3419770A (en) * 1967-02-08 1968-12-31 Matsushita Electric Ind Co Ltd Metallized paper condensers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859592A (en) * 1972-05-08 1975-01-07 Siemens Ag Electrical RC element
US3748571A (en) * 1972-09-07 1973-07-24 Kulite Semiconductors Products Pressure sensitive transducers employing capacitive and resistive variations
DE2714167A1 (de) * 1977-03-30 1978-10-05 Siemens Ag Aluminium-flachelektrolytkondensator und verfahren zu seiner herstellung
US4434452A (en) 1980-01-18 1984-02-28 Matsushita Electric Industrial Co., Ltd. Metallized film capacitor
US4494168A (en) * 1981-01-07 1985-01-15 Matsushita Electric Industrial Company, Limited Roll type capacitor having segmented metallized areas
US5447779A (en) * 1990-08-06 1995-09-05 Tokai Electronics Co., Ltd. Resonant tag and method of manufacturing the same
US5589251A (en) * 1990-08-06 1996-12-31 Tokai Electronics Co., Ltd. Resonant tag and method of manufacturing the same
US5682814A (en) * 1990-08-06 1997-11-04 Tokai Electronics Co., Ltd. Apparatus for manufacturing resonant tag
US5695860A (en) * 1990-08-06 1997-12-09 Tokai Electronics Co., Ltd. Resonant tag and method of manufacturing the same

Also Published As

Publication number Publication date
FR1542321A (fr) 1968-10-11
GB1186644A (en) 1970-04-02
CH474826A (fr) 1969-06-30

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