US3267406A - Non-inductive electrical resistor - Google Patents

Non-inductive electrical resistor Download PDF

Info

Publication number
US3267406A
US3267406A US364341A US36434164A US3267406A US 3267406 A US3267406 A US 3267406A US 364341 A US364341 A US 364341A US 36434164 A US36434164 A US 36434164A US 3267406 A US3267406 A US 3267406A
Authority
US
United States
Prior art keywords
resistor
resistive
ribbon
ribbons
inductive
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 - Lifetime
Application number
US364341A
Inventor
Richard L Davis
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US364341A priority Critical patent/US3267406A/en
Application granted granted Critical
Publication of US3267406A publication Critical patent/US3267406A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C3/00Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
    • H01C3/02Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids arranged or constructed for reducing self-induction, capacitance or variation with frequency
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C1/00Details
    • H01C1/01Mounting; Supporting

Definitions

  • This invention relates to electrical resistors, particularly to non-inductive electrical resistors.
  • This invention contemplates utilizing insulated resistive material in the form of a mobius surface with electrical leads attached diametrically opposite each other to the resistive material as a non-inductive resistor.
  • FIGURE 1 is a perspective View of one embodiment of this invention
  • non-inductive resistor 1 comprises nonconductive ribbon 2 of an insulative material such as Mylar (polyethylene terephthalate) on both sides of which resistive ribbons 3 and 4 have been applied.
  • Resistive ribbons 3 and 4 can be made of a resistive material such as Tophet A (80 Ni, 20 Cr) or for very low resistances, aluminum.
  • the combined ribbons, 2, 3 and 4 are then twisted as shown at point 5 and resistive ribbon 3 connected to resistive ribbon 4 such as by soldering so as to form a mobius strip.
  • Resistive ribbons 3 and 4 when connected form a single mobius surface.
  • Electrical leads 6 and 7 are then attached such as by soldering to diametrically opposite points 8 and 9 of resistive ribbons 3 and 4 to complete the resistor.
  • resistive ribbons 3 and 4 may be replaced by resistive wire such as Manganin (84 Cu, 12 Mn, 4 Ni) bifilar wire wherein the insulation normally providedwould replace non-conductive ribbon 2.
  • bifilar wire it is meant two parallel strands of wire covered by and separated by the same insulator. The spacing between the wires provided by the insulation should be maintained when the respective wires are connected together to form the mobius strip so as to have minimum reactance in the resistor.
  • the mobius resistor listed first in Table I was pulsed at 1000 volts and had a measured rise time of 0.1 microsecond.
  • the reactance and/or resistance of a resistor embodying this invention was unaffected by handling or changes in form.
  • the resistor need not be maintained in any particular form such as that shown in FIG. 1 but can be wound around a cylindrical core or a card or for that matter rolled in a ball providing the resistive ribbons are insulated from each other as is well known in the art.
  • a mobius strip resistor was wound on a cylindrical core without any effect to its operation thereby enabling compact packaging of the resistor.
  • a group of mobius strip resistors can be arranged for most any resistance value either by series connection or parallel connection and still maintain the time constant. Since these resistors can be wound around any form and not change the reactance, a group of resistors can be made on the same nonconductive ribbon and the combined resistor Wound around a common form with a comparable size to present resistors.
  • a non-inductive electrical resistor comprising in combination, a ribbon of non-conductive material having opposite surfaces defining a continuous uniform surface in the form of a mobius strip, at least a single uniform layer of resistive material disposed in continuous manner circumferentially throughout and in parallel coextensivity on said opposite surfaces, and a pair of electrical .leads connected to the layer of resistive material at points aligned with each other on opposite surfaces of the non-conductive material.
  • resistive material comprises a plurality of resistive layers and each layer is uniformly and continuously disposed throughout and in parallel coextensivity on the said opposite surfaces.
  • each resistive layer has a pair of electrical leads connected thereto at points aligned with each other on opposite surfaces of the non-conductive material.

Landscapes

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

Description

Aug. 16, 1966 R. L. DAVIS 3,267,405
NON-'INDUCTIVE ELECTRICAL RESISTOR Filed May 1, 1964 I? Y Richard L. Davis IN V EN TOR.
ATTORNEY United States Patent represented by the United States Atomic Energy Commission Filed May 1, 1964, Ser. No. 364,341 3 Claims. (Cl. 338-63) This invention relates to electrical resistors, particularly to non-inductive electrical resistors.
In high voltage, high frequency electronic circuits, especially in pulse applications such as radar, the design and operation of these circuits is greatly affected by unknown reactance in' the circuit components themselves or in unwanted coupling between components. A large amount of time andfmoney has been expended to develop components that display in these applications the particular electrical function for which it was designed. Under ideal circumstances, a resistor should essentially provide only resistance to the circuit, a capacitor only capacitance and an inductor only inductance.
This has been a problem in the resistor field and particularly in 'low resistance resistors. Previously known low resistance resistors have displayed in high frequency and pulse applications some form of deleterious reactance or coupling with other components.
It is therefore an object of this invention to provide a non-inductive resistor which is both simple and inexpensive to produce and flexible in usage.
It is a further object of this invention to provide a resistor which has no residual self inductance or mutual inductance.
It is a further object to provide a resistor which is nonreactive at high frequencies.
Various other objects and advantages will appear from the following description of one embodiment of the invention, and {the most novel features will be particularly pointed out hereinafter in connection with the appended claims.
This invention contemplates utilizing insulated resistive material in the form of a mobius surface with electrical leads attached diametrically opposite each other to the resistive material as a non-inductive resistor.
For a better understanding of the invention, reference may be had to the accompanying drawings in which:
FIGURE 1 is a perspective View of one embodiment of this invention,
FIGURE 2 is a cross-sectional view of the mobius strip showing the location of the resistor, insulator and electrical leads and FIGURE 3 is a cutaway view of a section of a resistor which embodies this invention.
In the embodiment of the invention illustrated in FIG. 1 and FIG. 2, non-inductive resistor 1 comprises nonconductive ribbon 2 of an insulative material such as Mylar (polyethylene terephthalate) on both sides of which resistive ribbons 3 and 4 have been applied. Resistive ribbons 3 and 4 can be made of a resistive material such as Tophet A (80 Ni, 20 Cr) or for very low resistances, aluminum. The combined ribbons, 2, 3 and 4 are then twisted as shown at point 5 and resistive ribbon 3 connected to resistive ribbon 4 such as by soldering so as to form a mobius strip. Resistive ribbons 3 and 4, when connected form a single mobius surface. Electrical leads 6 and 7 are then attached such as by soldering to diametrically opposite points 8 and 9 of resistive ribbons 3 and 4 to complete the resistor.
It is understood that the resistive ribbons 3 and 4 may be replaced by resistive wire such as Manganin (84 Cu, 12 Mn, 4 Ni) bifilar wire wherein the insulation normally providedwould replace non-conductive ribbon 2. By bifilar wire, it is meant two parallel strands of wire covered by and separated by the same insulator. The spacing between the wires provided by the insulation should be maintained when the respective wires are connected together to form the mobius strip so as to have minimum reactance in the resistor.
In operation, a high frequency electrical current inserted across electrical leads 6 and 7 will travel in opposite directions between the leads through resistive ribbons 3 and 4. The electromagnetic fields generated by these currents thereby cancel each other resulting in an essentially non-inductive, non-reactive resistor as shown in Table I.
TABLE I Conductor Resistance Reactance (200 kc.) Resistive (ohms) Material Ribbon 12.7 0.0305 microhenries Tophet A.
Do 0.1 picotarad Do.
50.3 0.090 microhenriesnu. Manganin. Do 62 0.069 picofarad D0.
The mobius resistor listed first in Table I was pulsed at 1000 volts and had a measured rise time of 0.1 microsecond.
It was found that the reactance and/or resistance of a resistor embodying this invention was unaffected by handling or changes in form. Once the resistor is connected as described above in a mobius strip, the resistor need not be maintained in any particular form such as that shown in FIG. 1 but can be wound around a cylindrical core or a card or for that matter rolled in a ball providing the resistive ribbons are insulated from each other as is well known in the art. A mobius strip resistor was wound on a cylindrical core without any effect to its operation thereby enabling compact packaging of the resistor.
Further, as shown in FIG. 3, two sets of resistive ribbons 10 and 11 and 12 and 13 respectively were applied side by side on the same non-conductive ribbon 14 with about a inch spacing and the combined unit connected as described with respect to FIG. 1 so as to form two mobius strip resistors using ribbons 10 and 11 as one resistor and ribbons 12 and 13 as the other resistor. In this form, it was found that neither resistor in any way affected the operation of the other resistor. These resistors were then connected successively in series and in parallel and measurements made of the resulting resistance and reactance. It was found that the resultant resistance value changed in accordance with the usual series-parallel elfect without changing the time constant from that of a single resistor. Thus, a group of mobius strip resistors can be arranged for most any resistance value either by series connection or parallel connection and still maintain the time constant. Since these resistors can be wound around any form and not change the reactance, a group of resistors can be made on the same nonconductive ribbon and the combined resistor Wound around a common form with a comparable size to present resistors.
It will be understood that various changes in the details, materials and arrangements of the parts, which have been herein described and illustrated in order to explain the nature of the invention may be made by those skilled in the art within the principles and scope of the invention as expressed in the appended claims.
What is claimed is:
1. A non-inductive electrical resistor comprising in combination, a ribbon of non-conductive material having opposite surfaces defining a continuous uniform surface in the form of a mobius strip, at least a single uniform layer of resistive material disposed in continuous manner circumferentially throughout and in parallel coextensivity on said opposite surfaces, and a pair of electrical .leads connected to the layer of resistive material at points aligned with each other on opposite surfaces of the non-conductive material.
2. The combination of claim 1 in which the resistive material comprises a plurality of resistive layers and each layer is uniformly and continuously disposed throughout and in parallel coextensivity on the said opposite surfaces.
3. The combination of claim 2 in which each resistive layer has a pair of electrical leads connected thereto at points aligned with each other on opposite surfaces of the non-conductive material.
4 t References Cited by the Examine UNITED STATES PATENTS Tarbox 336 206 x 10 RICHARD M. WOOD, Primary Examiner.
W. D. BROOKS, Assistant Examiner.

Claims (1)

1. A NON-INDUCTIVE ELECTRICAL RESISTOR COMPRISING IN COMBINATION, A RIBBON OF NON-CONDUCTIVE MATERIAL HAVING OPPOSITE SURFACES DEFINING A CONTINUOUS UNIFORM SURFACE IN THE FORM OF A MOBIUS STRIP, AT LEAST A SINGLE UNIFORM LAYER OF RESISTIVE MATERIAL DISPOSED IN CONTINUOUS MANNER CIRCUMFERENTIALLY THROUGHOUT AND INPARALLEL COEXTENSIVITY ON SAID OPPOSITE SURFACES, AND A PAIR OF ELECTRICAL LEADS
US364341A 1964-05-01 1964-05-01 Non-inductive electrical resistor Expired - Lifetime US3267406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US364341A US3267406A (en) 1964-05-01 1964-05-01 Non-inductive electrical resistor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US364341A US3267406A (en) 1964-05-01 1964-05-01 Non-inductive electrical resistor

Publications (1)

Publication Number Publication Date
US3267406A true US3267406A (en) 1966-08-16

Family

ID=23434071

Family Applications (1)

Application Number Title Priority Date Filing Date
US364341A Expired - Lifetime US3267406A (en) 1964-05-01 1964-05-01 Non-inductive electrical resistor

Country Status (1)

Country Link
US (1) US3267406A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3405442C1 (en) * 1983-09-05 1985-01-31 Aktiengesellschaft für industrielle Elektronik AGIE Losone bei Locarno, Losone, Locarno Sensing resistor
US4599586A (en) * 1982-12-08 1986-07-08 Brown Thomas J Mobius capacitor
DE29603332U1 (en) 1996-02-14 1996-04-18 Meyer, Gerhard, Dr.-Ing., 12679 Berlin Ohmic shunt
US20040233589A1 (en) * 2003-05-20 2004-11-25 Dewey Thomas E. Package-based voltage control
US20050024806A1 (en) * 2001-06-14 2005-02-03 Koichi Hirasawa Current detection resistor, mounting structure thereof and method of measuring effective inductance
DE102008016398A1 (en) 2008-03-29 2009-10-01 Quadbeck-Seeger, H.-J., Prof. Dr. Use of three-dimensional bodies with non-orientable surfaces
WO2013184038A2 (en) * 2012-06-06 2013-12-12 Shipilov Vladimir Mikhailovich Device for converting electrical energy to heat energy and creating heat exchange and an electric vapor generator
USD862093S1 (en) 2014-06-11 2019-10-08 Dsm Ip Assets B.V. Chain of fabric links
USD937777S1 (en) 2020-06-01 2021-12-07 Sergey Sheleg Double-negative metamaterial unit cell

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1552686A (en) * 1924-01-03 1925-09-08 Ringsdorffwerke A G Electric resistance coils free from induction and capacity
US1789229A (en) * 1929-03-09 1931-01-13 Wired Radio Inc Inductance coil
US1972720A (en) * 1932-02-02 1934-09-04 Leeds & Northrup Co Cross-shot woven resistor
US2655582A (en) * 1952-02-01 1953-10-13 Mepco Inc Noninductive electrical resistor
US2854645A (en) * 1956-08-27 1958-09-30 Itt Wide band waveguide circuitry
US2980874A (en) * 1957-09-16 1961-04-18 John W Tarbox Electric winding

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1552686A (en) * 1924-01-03 1925-09-08 Ringsdorffwerke A G Electric resistance coils free from induction and capacity
US1789229A (en) * 1929-03-09 1931-01-13 Wired Radio Inc Inductance coil
US1972720A (en) * 1932-02-02 1934-09-04 Leeds & Northrup Co Cross-shot woven resistor
US2655582A (en) * 1952-02-01 1953-10-13 Mepco Inc Noninductive electrical resistor
US2854645A (en) * 1956-08-27 1958-09-30 Itt Wide band waveguide circuitry
US2980874A (en) * 1957-09-16 1961-04-18 John W Tarbox Electric winding

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4599586A (en) * 1982-12-08 1986-07-08 Brown Thomas J Mobius capacitor
DE3405442C1 (en) * 1983-09-05 1985-01-31 Aktiengesellschaft für industrielle Elektronik AGIE Losone bei Locarno, Losone, Locarno Sensing resistor
DE29603332U1 (en) 1996-02-14 1996-04-18 Meyer, Gerhard, Dr.-Ing., 12679 Berlin Ohmic shunt
US7292022B2 (en) * 2001-06-14 2007-11-06 Koa Corporation Current detection resistor, mounting structure thereof and method of measuring effective inductance
US20050024806A1 (en) * 2001-06-14 2005-02-03 Koichi Hirasawa Current detection resistor, mounting structure thereof and method of measuring effective inductance
US20040233589A1 (en) * 2003-05-20 2004-11-25 Dewey Thomas E. Package-based voltage control
US7166934B2 (en) * 2003-05-20 2007-01-23 Nvidia Corporation Package-based voltage control
US7768863B1 (en) 2003-05-20 2010-08-03 Nvidia Corporation Package-based voltage control
DE102008016398A1 (en) 2008-03-29 2009-10-01 Quadbeck-Seeger, H.-J., Prof. Dr. Use of three-dimensional bodies with non-orientable surfaces
WO2013184038A2 (en) * 2012-06-06 2013-12-12 Shipilov Vladimir Mikhailovich Device for converting electrical energy to heat energy and creating heat exchange and an electric vapor generator
WO2013184038A3 (en) * 2012-06-06 2014-04-03 Shipilov Vladimir Mikhailovich Device for converting electrical energy to heat energy and creating heat exchange and an electric vapor generator
USD862093S1 (en) 2014-06-11 2019-10-08 Dsm Ip Assets B.V. Chain of fabric links
USD937777S1 (en) 2020-06-01 2021-12-07 Sergey Sheleg Double-negative metamaterial unit cell

Similar Documents

Publication Publication Date Title
US2911605A (en) Printed circuitry
US3267406A (en) Non-inductive electrical resistor
GB1429009A (en) Selectable fixed impedance device
US3329911A (en) Low transfer impedance capacitor with resistive electrode
US2935694A (en) Superconducting circuits
US3517361A (en) Shielded transformer
DE1024118B (en) Arrangement for storing values represented by electrical signals by means of a capacitor
DE2936890C2 (en) Temperature control for electrical surface heating
US3484654A (en) High-speed printing of electronic components and articles produced thereby
US3360754A (en) Transformer having reduced differential impedances between secondary portions
US3473146A (en) Electrical resistor having low resistance values
US2568600A (en) Low-ohmic electrical resistance
DE3405442C1 (en) Sensing resistor
GB2056182A (en) Electrical resistance
US2655582A (en) Noninductive electrical resistor
US3594665A (en) Delay lines with added shunt conductance
US3465267A (en) Circuit component
US3634785A (en) Electrical delay device of unitary configuration
US4717834A (en) Stripline transformer adapted for inexpensive construction
US2375097A (en) High potential apparatus rendered safe for handling
US2894221A (en) Artificial transmission lines
US3320555A (en) Electrical delay line
US3353136A (en) Printed resistors
US3259857A (en) Conductor having distributed capacitance
US2615091A (en) Screened high-frequency circuit element