GB927228A - Improvements in electrical potentiometers - Google Patents
Improvements in electrical potentiometersInfo
- 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
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.
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)
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)
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 |
-
1960
- 1960-06-21 GB GB21753/60A patent/GB927228A/en not_active Expired
-
1961
- 1961-06-12 US US116568A patent/US3223919A/en not_active Expired - Lifetime
- 1961-06-19 CH CH715761A patent/CH387754A/en unknown
- 1961-06-20 DE DEL39294A patent/DE1289571B/en active Pending
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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