GB927228A - Improvements in electrical potentiometers - Google Patents

Improvements in electrical potentiometers

Info

Publication number
GB927228A
GB927228A GB21753/60A GB2175360A GB927228A GB 927228 A GB927228 A GB 927228A GB 21753/60 A GB21753/60 A GB 21753/60A GB 2175360 A GB2175360 A GB 2175360A GB 927228 A GB927228 A GB 927228A
Authority
GB
United Kingdom
Prior art keywords
winding
windings
voltage
points
take
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
GB21753/60A
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.)
Colvern Ltd
Original Assignee
Colvern Ltd
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 Colvern Ltd filed Critical Colvern Ltd
Priority to GB21753/60A priority Critical patent/GB927228A/en
Priority to US116568A priority patent/US3223919A/en
Priority to CH715761A priority patent/CH387754A/en
Priority to DEL39294A priority patent/DE1289571B/en
Publication of GB927228A publication Critical patent/GB927228A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/46—Arrangements of fixed resistors with intervening connectors, e.g. taps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

927,228. Inductive potentiometers. E. M. LANGHAM, and COLVERN Ltd. June 15, 1961 [June 21, 1960], No. 21753/60. Class 38 (2). [Also in Group XXXVI] A potentiometer in which voltage steps in the output are reduced by using a multiple take-off member, having the pitch of the takeoff points differing from that of the turns or tappings of the inductive or resistive winding with which they co-operate (either conductively or capacitatively) to give a vernier effect, has circulating currents between the take-off points inhibited by applying equal voltages between adjacent take-off points such that the voltage between the outer take-off points is substantially equal in magnitude and phase to the voltage between the turns or tappings of the winding which they span. In the embodiment shown in Figs. 2, 3, 4, rod 21 is a former of high magnetic permeability carrying a sectionalized winding 22, the winding being of a good conductor. The identical sections of winding 22 are connected as shown in Fig. 4 to the secondary 235 of transformer 23. The sleeve 25 carrying coaxial windings 27 and 18 surrounds windings 22, spanning more than one section. The pitch of winding 28 is different from (preferably smaller than) that of winding 22, and resistors 30, 31 joining the ends of winding 28 are such that the voltage per unit length is the same for windings 22 and 28. Resistive contact, represented by resistances 35, is made between windings 22 and 28, as the latter slides on the former. An input voltage VI is applied to the primary 23P of transformer 23, of which another winding 23T is connected to winding 27 which is inductively coupled to winding 28. The output VO is taken between the junction of resistors 30 and 31 and the free end of winding 23S. In a modification, resistances 35 are replaced by capacitive coupling, by interposing a dielectric between windings 22 and 28, or constructing these of anodized aluminium. In another embodiment, using the circuit of Fig. 5, capacitive couplings used, the capacitor elements being strips embedded in dielectric plates, at right angles to the direction of relative motion.
GB21753/60A 1960-06-21 1960-06-21 Improvements in electrical potentiometers Expired GB927228A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB21753/60A GB927228A (en) 1960-06-21 1960-06-21 Improvements in electrical potentiometers
US116568A US3223919A (en) 1960-06-21 1961-06-12 Electrical potentiometers with a second set of conductors spaced differently from an integral multiple of spacings between a first set of conductors
CH715761A CH387754A (en) 1960-06-21 1961-06-19 Electrical potentiometer device
DEL39294A DE1289571B (en) 1960-06-21 1961-06-20 AC linear potentiometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21753/60A GB927228A (en) 1960-06-21 1960-06-21 Improvements in electrical potentiometers

Publications (1)

Publication Number Publication Date
GB927228A true GB927228A (en) 1963-05-29

Family

ID=10168213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21753/60A Expired GB927228A (en) 1960-06-21 1960-06-21 Improvements in electrical potentiometers

Country Status (4)

Country Link
US (1) US3223919A (en)
CH (1) CH387754A (en)
DE (1) DE1289571B (en)
GB (1) GB927228A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348133A (en) * 1962-10-25 1967-10-17 Sogenique Electronics Ltd Position responsive apparatus including a capacitive potentiometer
US3505591A (en) * 1967-10-23 1970-04-07 Perkin Elmer Corp High resolution adjustable transducer employing an auxiliary transducer

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2109214A (en) * 1935-12-13 1938-02-22 Westinghouse Electric & Mfg Co Regulator rheostat
US2342084A (en) * 1940-03-14 1944-02-15 Gen Electric Transformer tap-changing circuit
GB644082A (en) * 1947-11-28 1950-10-04 Frerranti Ltd Improvements relating to variable impedance devices
US2572545A (en) * 1947-11-28 1951-10-23 Walker Donald Ferguson Variable impedance device
US2889504A (en) * 1950-06-23 1959-06-02 Emi Ltd Rate measuring servosystem
US2843822A (en) * 1953-09-15 1958-07-15 Perkin Elmer Corp Precision transducer
US2886677A (en) * 1955-11-10 1959-05-12 Marlan E Bourns Digital readout device
US2976476A (en) * 1956-04-27 1961-03-21 Superior Electric Co Variable voltage transformer
US2888636A (en) * 1957-02-26 1959-05-26 Dresser Ind Signal attenuator
FR1221446A (en) * 1958-03-31 1960-06-01 Perkin Elmer Corp Voltage divider for measurements
US3032702A (en) * 1959-07-29 1962-05-01 Perkin Elmer Corp Function generator
US3065418A (en) * 1960-01-04 1962-11-20 Ca Nat Research Council Vernier potentiometer
US3113262A (en) * 1960-08-22 1963-12-03 Fairchild Camera Instr Co Analogue-to-digital transducer

Also Published As

Publication number Publication date
DE1289571B (en) 1969-02-20
US3223919A (en) 1965-12-14
CH387754A (en) 1965-02-15

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