GB709902A - Improvements in conductor devices having a variable electric resistance - Google Patents

Improvements in conductor devices having a variable electric resistance

Info

Publication number
GB709902A
GB709902A GB250/50A GB25050A GB709902A GB 709902 A GB709902 A GB 709902A GB 250/50 A GB250/50 A GB 250/50A GB 25050 A GB25050 A GB 25050A GB 709902 A GB709902 A GB 709902A
Authority
GB
United Kingdom
Prior art keywords
resistance
magneto
jarret
ups
microphones
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
GB250/50A
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
Publication of GB709902A publication Critical patent/GB709902A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/025—Measuring arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/46—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes silicones
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/10—Adjustable resistors adjustable by mechanical pressure or force
    • H01C10/106—Adjustable resistors adjustable by mechanical pressure or force on resistive material dispersed in an elastic material
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

709,902. Telephonic amplifiers; microphones; gramophone pick-ups. JARRET, J. M. B., and JARRET, J. H. Jan. 4, 1950 [Jan. 8, 1949; Dec. 19, 1949], No. 250/50. Class 40 (4) [Also in Groups XXXV, XXXVI and XXXVIII] A pressure sensitive resistance consisting of a silicone rubber impregnated with extremely fine carbon particles is used in microphones, gramophone pick-ups and magneto microphone relays. A gramophone pick-up, Fig. 6, has a needle 23 whose oscillations vary the resistance of two resistance members 26, 27 connected in a bridge to provide an electrical output at 33. A microphone, Fig. 7, comprises a diaphragm 34 whose oscillations vary the resistance of resistance members 26a, 27a connected in a bridge to provide an electrical output at 33a. A magneto-microphonic relay, Fig. 8, comprises a magneto-strictive device 38 which varies the pressure on a resistance member 35 to provide an amplified output at 16a. Specification 591,452 is referred to.
GB250/50A 1949-01-08 1950-01-04 Improvements in conductor devices having a variable electric resistance Expired GB709902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR885446X 1949-01-08

Publications (1)

Publication Number Publication Date
GB709902A true GB709902A (en) 1954-06-02

Family

ID=9375467

Family Applications (1)

Application Number Title Priority Date Filing Date
GB250/50A Expired GB709902A (en) 1949-01-08 1950-01-04 Improvements in conductor devices having a variable electric resistance

Country Status (4)

Country Link
CH (1) CH288005A (en)
DE (1) DE885446C (en)
FR (2) FR60732E (en)
GB (1) GB709902A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186154A (en) * 1986-02-04 1987-08-05 Honda Motor Co Ltd Vibration sensor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT520084A (en) * 1953-09-21
NL267357A (en) * 1960-07-28
DE1281323B (en) * 1960-12-13 1968-10-24 Siemens Ag Magnetic probe for presence indicator
DE1235376B (en) * 1963-08-24 1967-03-02 Heinrich Peiker Microphone in which the vibrational forces occurring on the membrane act on a transistor
DE1284102B (en) * 1966-05-23 1968-11-28 Ernst August Dipl Ing Device for electrical measurement of mechanical quantities

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186154A (en) * 1986-02-04 1987-08-05 Honda Motor Co Ltd Vibration sensor
GB2186154B (en) * 1986-02-04 1989-11-08 Honda Motor Co Ltd Vibration sensor

Also Published As

Publication number Publication date
DE885446C (en) 1953-08-06
FR1011286A (en) 1952-06-30
CH288005A (en) 1952-12-31
FR60732E (en) 1955-01-25

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