CN101075491B - Potentiometer - Google Patents
Potentiometer Download PDFInfo
- Publication number
- CN101075491B CN101075491B CN2007101034819A CN200710103481A CN101075491B CN 101075491 B CN101075491 B CN 101075491B CN 2007101034819 A CN2007101034819 A CN 2007101034819A CN 200710103481 A CN200710103481 A CN 200710103481A CN 101075491 B CN101075491 B CN 101075491B
- Authority
- CN
- China
- Prior art keywords
- potentiometer
- contact
- potentiometer according
- sliding contact
- carrier board
- 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 - Fee Related
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/46—Arrangements of fixed resistors with intervening connectors, e.g. taps
- H01C10/48—Arrangements of fixed resistors with intervening connectors, e.g. taps including contact movable in an arcuate path
Abstract
Electric potentiometer (1) is provided with carrier plate (6) with resistance circuit (3) wherein the free ends (9,12) of the resistance circuit (3) are connected with joint (15,18) of a first and a second electric potentiometer, and a tapping end (27) with a gliding contact (24), wherein the tapping end is connected with the joint (21) of a third electric potentiometer. The resistance circuit (3) is composed of discrete array (4) of resistance part (30) with preset resistance value by electrical connection. In addition, using an existence device (36), the gliding contact (24) is electrically connected with a preset area of the resistance array (4) along its moving track (B) in the adjusting area of the tapping end.
Description
Technical field
The present invention relates to a kind of like claim 1 potentiometer as described in the preamble.This type of potentiometer has three potentiometer joints and a carrier board that is loaded with resistance circuit.The free end of resistance circuit is connected with the first and second potentiometer joints.This type of potentiometer has tap in addition, and this tap is loaded with sliding contact and is connected with the 3rd potentiometer joint.
Background technology
This type of potentiometer is known in principle in the prior art to be adjustable resistance.Its essential structure and methods for using them is for example described in textbook " Ekbert Hering, Klaus Bressler, Elektronik f ü r Ingenieure, VDI Verlag D ü sseldorf, 1992, the 2.2.4 chapters and sections ".
In order to produce this type of potentiometer, on supporting member, coat one or more resistance materials according to known so far method at this.This resistance material forms continuous resistive coating.It for example is carbon coating or metal-cermic coating, and metal-cermic coating is to implant the coating of processing in pottery or the glass substance by metal particle.
But simple coating potentiometer is not very accurate.In order to improve precision known potentiometer is utilized laser adjustment resistive coating in the ensuing course of processing.Resistive coating conduct simultaneously constitutes the contact-making surface of the sliding contact of resistance tap.
Owing to need the laser adjustment, known so far method is very expensive and dumb.It is known thus that to have high-precision this type of potentiometer relatively more expensive.
Summary of the invention
Therefore task of the present invention is to provide a kind of and can has high-precision this type of potentiometer with what the methods of simple and cost economy were produced.
This type of potentiometer of the characteristic features of this task through having claim 1 solves.
According to the present invention; Resistance circuit is made up of the discrete resistors element arrays that is electrically connected, have predetermined resistance value; And there is a device, utilizes this device sliding contact in the adjustment region of tap, to be electrically connected along its tracks with part that electric resistance array can be predesignated.
Advantage according to new potentiometer of the present invention is, and is discrete, be that the single resistive element with predetermined resistance value can be selected these accuracy classes, and promptly the array of their electrical connection totally draws the potentiometer of the accuracy class of hope.Through selection, can be thus confirming the precision of potentiometer at the very start to the suitable grade of tolerance of single resistive element.
Dividing connecting resistance to be similar to potentiometer well known in the prior art at this through sliding contact realizes.Not excessive sliding contact is when its tracks is moved, and the variation of the resistance value that between the first or second and the 3rd potentiometer joint, occurs equally is not continuous in the prior art for another example.Resistance value is that stairstepping changes or rather.Wherein the variable quantity from a grade to next grade is given through corresponding two resistance values between the contact two resistive elements.
Another advantage is, the variation through resistance value can realize different potential device characteristic, and is for example linear or non-linear, perhaps continues or do not continue or the like.Type in this potentiometer characteristic also can be selected through the connection type of single resistive element in advance, for example connects with which network type through single resistive element, is with series circuit or parallel circuits or mixing series connection is connected with parallel circuits.
In a kind of particularly advantageous execution mode; Array is the series circuit of resistive element, and the part of predesignating of the sliding contact electric resistance array that can be attached thereto in the adjustment region of tap along its tracks is the electric connection point between the single resistive element.Series circuit is the simplest network and is one of preferred scheme thus, is used for constructing the resistive element array that connects according to conduction of the present invention.
If being used for device that sliding contact is electrically connected with part that electric resistance array can be predesignated in addition, to be included in the contact area that distributes between the tracks of electric connection point and sliding contact of resistive element be very favorable.Can make the geometrical arrangements of resistive element on carrier board and corresponding space environment coupling that are connected in series so by this way.Can must not be in aspect the layout on carrier board like this in the scope of tracks of sliding contact and be restricted owing to the tie point itself between corresponding two resistance.
The array of the resistive element that conduction connects can be placed in carrier board with the opposed side of sliding contact, the array of the resistive element of electrical connection is in the different side of carrier board with sliding contact like this.The advantage of this layout is, can obtain less and than the compact structure mode.
The array of the resistive element that conduction connects also can be according to the same the same side that is placed in carrier board with sliding contact of the favourable execution mode of another kind.The advantage of this layout is that the back side that electric resistance array is vacated through carrier board is protected.
Tap around rotating shaft rotatably mounted be favourable, the tracks of sliding contact roughly is circular arc like this.Under little absolute space demand, guarantee sufficiently long tap tracks thus.
Especially the execution mode that a kind of carrier board is a wiring board is very favorable.It can use by circuit board technique and the known method of wiring board mounting technology and comprise that also equipment is used for producing according to potentiometer of the present invention.
Especially resistive element is SMD components and parts and to settle execution mode in the circuit board with SMD technology be very favorable.Wherein SMD representes " mounted on surface equipment ", i.e. surface mountable components.As everyone knows, the SMD technology all is proved to be the method into cost economy for many years in wiring board processing.With special shape structure, promptly not connecting lead-in wire at this resistive element, for example is on the end of rectangular parallelepiped shape or cylindrical resistive element but utilize the tie point that comprises welding material directly to be connected for this reason.
When assembling in the circuit board, the SMD components and parts are placed in its predetermined position and are fixed on the there.In ensuing automatic welding process, for example according to so-called fluctuation welding, liquid solder flows through on element.On tie point, realize being welded to connect, drip again at all other position liquid solders.Assembling this moment and welding can be carried out on fully-automatic equipment.
Resistive element in the execution mode with SMD ability can be realized big modification width and multiple accuracy class.Just it allows any electric resistance array that cost by this way realizes having the precision of predesignating economically.
Another advantage of this execution mode is, the contact area that constitutes the tie point between the tracks of corresponding two resistive elements and sliding contact is the conductor circuit on the carrier board.The production in the circuit board of this conductor circuit belongs to basic technology in wiring board processing, therefore equally can be simply and cost realize economically.
In order to reduce transition resistance, and make environmental impact minimization, can be in a kind of favourable execution mode in addition that the contact-making surface and the contact area of sliding contact is gold-plated.Be on the contact-making surface if can not get rid of moisture and dirt particulate, it is particularly advantageous that Here it is.
In a kind of simple and favourable thus especially execution mode according to potentiometer of the present invention, this potentiometer comprises the potentiometer housing of being made up of housing bottom and housing top.Can constitute the housing bottom of potentiometer housing with it simultaneously as the function of the carrier of the tracks of electric resistance array and tap at this carrier board.If it is particularly advantageous that electric resistance array and tap are arranged in the same side of carrier board.Because the back side of carrier board does not just have electronic devices and components and can pack into thus in the housing top like this, make it play the effect of the housing bottom of protective action.
Tap is placed in an advantageous manner round its rotating shaft and can be rotated to support on the contact support in the housing top.Like this for the operator can be from housing top the one side utilization or the resistance of hoping without the instrument adjustment.
Under favourable mode, contact support utilize seal for example O shape circle with respect to the housing top seal.The housing that combines to obtain a kind of dirt and moisture seal of special by this way and the housing bottom that seals according to potentiometer of the present invention.
Can comprise the Metal Contact part in an advantageous manner at this sliding contact, it is fixed in the contact support and flexibly acts on carrier board.Guarantee enough and last constant contact pressure of time through flexible effect.
In order further to minimize the influence of dirt particle, sliding contact can be made up of a plurality of branch contacts that are connected in parallel.It can for example be configured to comb or brush.
Especially when according to another preferred embodiment, when contact support and housing top are prefabricated mouldings, then according to the unusual cost economy of the production general of potentiometer of the present invention.They can process in a large number and to different potential device type with being consistent.Difference between the single potentiometer type is only confirmed through the size of electric resistance array.
A kind of simple especially and therefore preferred embodiment in, only form according to potentiometer of the present invention by five single-pieces.They are these elements: housing top, contact support, contact, seal and carrier board.
In when assembling, in first step with the seal contact support of packing into.According to a kind of aforesaid favourable execution mode, O shape circle is packed in the cannelure that matches of contact support as seal.In second step, then contact support is packed in the suitable breach in the housing top, O shape circle plays sealing function between the upside of the inboard on housing top and contact support thus.In third step, then contact is packed in the corresponding breach of contact support downside.In the 5th step, be placed on the housing downside that so far still opens wide wiring board also fixing then.Wherein should fixing chucking or the bonding that can perhaps pass through the outer wall on wiring board and housing top realize, perhaps through pouring into a mould sealing substance and filler or realizing with any other known methods.
Description of drawings
By the accompanying drawing that two kinds of embodiment of the present invention are shown with illustrated in detail and explanation the present invention and the present invention other favourable design and improvement project.
Shown in the figure:
Fig. 1 is according to potentiometer of the present invention (signal) cross-sectional view,
Fig. 2 is according to potentiometer of the present invention (signal) vertical view, and wherein electric resistance array and tap are arranged in the same side of carrier board,
Fig. 3 is according to potentiometer of the present invention (signal) cross-sectional view, and wherein carrier board is simultaneously as housing bottom,
Fig. 4 wherein also is provided with housing bottom except carrier board according to potentiometer of the present invention (signal) cross-sectional view,
Fig. 5 schematically illustrated by Fig. 2 to 4 by the resistance curve of potentiometer of the present invention about corner, and
Fig. 6 shows (signal) cross-sectional view according to potentiometer of the present invention, and wherein carrier board utilizes sealing substance to be connected with housing with filler.
Embodiment
Fig. 1 shows the potentiometer 1 with the first potentiometer joint 15, the second potentiometer joint 18 and the 3rd potentiometer joint 21.Settled the array 4 of the resistive element 30 of series circuit form at the downside of carrier board 6.Resistive element 30 is designed to the SMD components and parts.They are loaded with the connector of being processed by welding material 31 respectively on the end of rectangular parallelepiped shape resistance body.
The lead-in wire of conduction is drawn out to the opposite side of carrier board 6 from the connector 31 of each resistive element 30.The conductive lead wire of corresponding there two adjacent resistor elements is electrically connected in electric connection point 42.Conductive lead wire becomes be used for device that the parts of electric resistance array 3 and sliding contact are electrically connected in the adjusting range of tap 27 thus.The series circuit of circuit 3 by this way has a resistance between first free end 9 of resistance circuit and second free end 12.
First free end 9 utilizes conductive lead wire to be electrically connected with the first potentiometer joint 15 at the opposite side of carrier board equally, and same second free end 12 utilizes conductive lead wire to be electrically connected with the second potentiometer joint 18.
What be connected with the 3rd potentiometer joint 21 is the tap 27 that terminates in the sliding contact 24.Sliding contact 24 is pushing with resistance circuit 3 opposed sides towards carrier board 6 flexibly.Tap 27 and thus sliding contact 24 can slide along the surface that its tracks B be parallel to carrier board 6 in the direction of arrow P.Such value appears in the free end and the resistance between the 3rd potentiometer joint 21 of resistance circuit 3, and this value is provided by the series circuit of the resistive element 30 between the electric connection point 42 that is in resistance circuit 3 corresponding free ends and contacts through sliding contact 24.
Fig. 2 shows the vertical view according to the another kind of execution mode of potentiometer of the present invention.Element or functional unit wherein same or same purpose use like Reference numeral identical among Fig. 1.Therefore only set about discussing difference below basically with Fig. 1.
The resistive element 30 of electric resistance array 4 that constitutes the series circuit form of resistive element 30 is placed in carrier board 6 in the execution mode of Fig. 2 a side identical with tap 27.These resistive element annular ground are placed in the upside of wiring board 6 round the rotating shaft 62 of contact support 60.Contact support 60 has the shape of substantial cylindrical, and the surface that tap 27 is roughly parallel to wiring board 6 extends radially from contact support with extending.It can rotate about 270 ° angle round the rotating shaft 62 of contact support with contact support between initial position and terminal position.The 3rd potentiometer joint 21 is drawn on the edge of wiring board 6 in the side as conductor circuit.The 3rd potentiometer joint 21 expands to the conductor circle that annular is surrounded contact support 60 in the past towards the center.
The starting point of per two adjacent resistor elements 30 is connected in electric connection point 42 respectively through conductor circuit with terminal point.Electric connection point 42 same annular ground are arranged round rotating shaft 62.Radially extend a contact area 40 that is designed to the rectangular conductor circuit element of longitudinal extension from each electric connection point 42 towards rotating shaft 62.
Downside at tap 27 has sliding contact, and it is covered by tap in the view according to Fig. 2.Set up electrical connection between its round conductor circuit in the extension of contact area 45 and the 3rd potentiometer joint 21.
Fig. 5 has schematically illustrated the curve of the potentiometer resistance between the first or second and the 3rd potentiometer joint, and the unit of ordinate is ohm, and it depends on the corner of contact support 60.People obviously find out the step curve of the resistance that when sliding contact continues motion from a contact area to next contact area, produces.The resistance value of wherein single resistive element 30 is predetermined, even the resistance characteristic curve has the logarithm change curve.
Fig. 3 shows the cross-sectional view according to the another kind of execution mode of potentiometer of the present invention.Element or functional unit wherein same or same purpose use like Reference numeral identical among Fig. 1 and 2.Therefore only set about discussing difference below basically with Fig. 1 and 2.
At the upside of cylindrical body 64, O shape circle is inserted in the cannelure, is used for cylindrical body is pressed to the inboard on housing top 54.Opposed downside at cylindrical body 64 has a contact breach 28 of arranging a little prejudicially.It is used to hold sliding contact 24.Sliding contact 24 has the shape of the spreader spring of roughly metal V-shaped bending, and it flexibly acts at opening direction.
At the free end of sliding contact 24, this sliding contact stops in flat contact part 66.In order to improve the conduction contact, that contact 66 is gold-plated.Contact area 45 also can be gold-plated in addition.
Because sliding contact 24 is at the elastic reaction of opening direction, contact support 60 is pressed to the inboard on housing top 54 with O shape circle 63 on the one hand, on contact 66, produces necessary contact pressure on the other hand thus.Contact support 60 aid that need not to add just can be fixed in the correct position in potentiometer housing 57 by this way.This makes according to the very simple and cost economy according to the assembling of potentiometer of the present invention in the execution mode of Fig. 3.
Fig. 4 shows a kind of flexible program of the execution mode according to Fig. 3.Element or functional unit wherein same or same purpose use like Reference numeral identical among Fig. 3.Therefore only set about discussing difference below basically with Fig. 3.
In the execution mode according to Fig. 4, potentiometer housing 57 is through 51 sealings of additional housing bottom.Wiring board is contained in the inside of potentiometer housing 57 thus fully and is optimally stopped dirt and moisture.The potentiometer joint passes potentiometer housing 57 with suitable manner and draws and seal.
Fig. 6 shows the cross-sectional view according to the another kind of execution mode of potentiometer of the present invention, and wherein people realize the obstruction to dirt, moisture and other environmental impact with other mode.Element or functional unit wherein same or same purpose use like Reference numeral identical among Fig. 1 to 4.Therefore only set about discussing difference below basically with the figure of front.
In the execution mode according to Fig. 6, carrier board 6 inserts a segment distance this housing top 54 from the open side on housing top 54, like this in the assembling of carrier board 6 leave free space between the free edge on side and housing top 54 of resistive element 30.This free space utilizes filler 67 to fill.On the one hand carrier board 6 is fixed in the housing top 54 at this this filler, it externally seals the inner space of potentiometer on the other hand, and prevents that all the other inner spaces of resistive element 30 and potentiometer from receiving environmental impact, for example dirt, moisture or mechanical collision influence.
Reference numerals list
1 potentiometer
3 resistance circuits
4 electric resistance arrays
6 carrier boards
First free end of 9 resistance circuits
Second free end of 12 resistance circuits
15 first potentiometer joints
18 second potentiometer joints
21 the 3rd potentiometer joints
24 sliding contacts
27 taps
28 contact breach
31 contact pad
30 resistive elements
The adjustment region of 33 taps
36 devices that are used to be electrically connected
The tracks of 39 taps
42 electric connection points
45 contact areas
48 rotating shafts
51 housing bottoms
54 housing tops
57 potentiometer housings
60 contact support
61 breach
62 rotating shafts
63 seals
64 cylindrical bodies
65 upper ends
66 contacts
67 fillers
Claims (22)
1. potentiometer (1); It has the carrier board (6) that is loaded with resistance circuit (3); Wherein the free end (9,12) of resistance circuit (3) connects with the first and second potentiometer joints (15,18); And this potentiometer also has the tap (27) that is loaded with sliding contact (24); This tap is connected with the 3rd potentiometer joint (21), it is characterized in that, said resistance circuit (3) is made up of the array (4) of the resistive element with predetermined resistance value (30) of the separation that is electrically connected; And there is device (36), utilizes this device sliding contact (24) in the adjustment region of tap, to be electrically connected along its tracks (B) with the part of predesignating (42) of electric resistance array (4).
2. potentiometer according to claim 1 (1) is characterized in that, said array (4) is the series circuit of resistive element (30), and the part of predesignating (42) of said electric resistance array (4) is the electric connection point between the single resistive element (30).
3. potentiometer according to claim 1 and 2 (1); It is characterized in that, be used for device (36) that sliding contact (24) is electrically connected with the part of predesignating (42) of electric resistance array (4) and be included in the contact area (45) that distributes between the tracks (B) of electric connection point and sliding contact (24) of resistive element (30).
4. potentiometer according to claim 1 and 2 (1) is characterized in that, the array (4) of the resistive element of said electrical connection (30) and sliding contact (24) are in the not homonymy of carrier board (6).
5. potentiometer according to claim 1 and 2 (1) is characterized in that, the array (4) of the resistive element of said electrical connection (30) and sliding contact (24) are in the same side of carrier board (6).
6. potentiometer according to claim 1 and 2 (1) is characterized in that, said tap (27) is rotatably mounted around rotating shaft, and the tracks (B) of sliding contact (24) is a circular arc like this.
7. potentiometer according to claim 1 and 2 (1) is characterized in that, said carrier board (6) is a wiring board.
8. potentiometer according to claim 7 (1) is characterized in that, said resistive element (30) is the SMD components and parts and is placed on the wiring board (6) with the SMD technology.
9. potentiometer according to claim 1 and 2 (1) is characterized in that, said contact area (45) is the conductor circuit on the carrier board (6).
10. potentiometer according to claim 1 and 2 (1) is characterized in that, the contact-making surface and/or the said contact area (45) of said sliding contact (24) is gold-plated.
11. potentiometer according to claim 1 and 2 (1) is characterized in that, the variation through resistance value realizes said potentiometer (1) different qualities.
12. potentiometer according to claim 1 and 2 (1) is characterized in that, through selecting the suitable grade of tolerance can confirm the precision of said potentiometer (1) to resistive element (30).
13. potentiometer according to claim 1 and 2 (1) is characterized in that, said carrier board (6) constitutes the housing bottom of the potentiometer housing (57) that comprises housing bottom (51) and housing top (54).
14. potentiometer according to claim 1 and 2 (1) is characterized in that, said carrier board (6) utilizes filler (67) cast in the open side of housing top (45) is packed housing top (45) into and in the outside.
15. potentiometer according to claim 1 and 2 (1) is characterized in that, said tap (27) is placed on the contact support (60) that can be rotated to support in the housing top (54).
16. potentiometer according to claim 1 and 2 (1) is characterized in that, said contact support (60) utilizes seal (63) to seal with respect to housing top (54).
17. potentiometer according to claim 1 and 2 (1) is characterized in that, said sliding contact (24) comprises the Metal Contact part (66) that is fixed in the contact support (60) and flexibly acts on carrier board (6).
18. potentiometer according to claim 1 and 2 (1) is characterized in that, said contact support (60) and housing top (54) are prefabricated mouldings.
19. potentiometer according to claim 1 and 2 (1), wherein said potentiometer (1) comprise this five single-pieces: housing top (54), contact support (60), contact (66), seal (63) and carrier board (6).
20. potentiometer according to claim 1 and 2 (1) is characterized in that, the distance between the single part of said contact area (45) is less than the width of sliding contact (24).
21. potentiometer according to claim 1 and 2 (1) is characterized in that, said sliding contact (24) is made up of a plurality of branch contacts that are connected in parallel.
22. potentiometer according to claim 21 (1) is characterized in that said sliding contact is configured to comb or brush.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006023533.9 | 2006-05-19 | ||
| DE102006023533.9A DE102006023533B4 (en) | 2006-05-19 | 2006-05-19 | Electric potentiometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101075491A CN101075491A (en) | 2007-11-21 |
| CN101075491B true CN101075491B (en) | 2012-02-22 |
Family
ID=38283937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101034819A Expired - Fee Related CN101075491B (en) | 2006-05-19 | 2007-05-18 | Potentiometer |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1858034A1 (en) |
| CN (1) | CN101075491B (en) |
| DE (1) | DE102006023533B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741892A (en) * | 2019-01-29 | 2019-05-10 | 安徽功率电气有限公司 | A kind of train spine vehicle Special-purpose potentiometer |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183579B (en) * | 2007-10-15 | 2010-07-21 | 深圳和而泰智能控制股份有限公司 | Discrete potentiometer |
| CN104021903A (en) * | 2014-06-09 | 2014-09-03 | 常州市零伍壹玖电子有限公司 | Bent-wire contact potentiometer |
| CN104505203B (en) * | 2014-12-29 | 2017-08-25 | 青岛歌尔声学科技有限公司 | A kind of slide rheostat and electronic product |
| CN105957669B (en) * | 2016-06-22 | 2017-12-29 | 陕西宝成航空仪表有限责任公司 | The method of finishing metal film or metal foil potentiometer linear precision |
| GB2580643B (en) * | 2019-01-18 | 2021-04-07 | C6 Tech As | Resistive position sensor |
| CN111098319A (en) * | 2020-01-19 | 2020-05-05 | 路邦科技授权有限公司 | Industrial grade arm allies oneself with control system more |
| CN112216454B (en) * | 2020-09-23 | 2021-12-07 | 东南大学 | High-resolution wide-range micro mechanical potentiometer leading-out structure and method |
| CN115638721B (en) * | 2022-12-23 | 2023-08-22 | 荣耀终端有限公司 | Corner detection device, rotating device and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4139831A (en) * | 1976-10-29 | 1979-02-13 | Georgii-Kobold August Heine Kg | Control for electrical positioning drives |
| US4146322A (en) * | 1976-04-08 | 1979-03-27 | Canon Kabushiki Kaisha | Variable resistance |
| CN2065353U (en) * | 1990-04-23 | 1990-11-07 | 张孝全 | Low-noise rotary potentiometer |
| CN1086627A (en) * | 1992-11-04 | 1994-05-11 | 陈克新 | Durable potentiometer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2103873A (en) * | 1935-04-13 | 1937-12-28 | Telefunken Gmbh | Variable resistor device |
-
2006
- 2006-05-19 DE DE102006023533.9A patent/DE102006023533B4/en active Active
-
2007
- 2007-03-31 EP EP07006785A patent/EP1858034A1/en not_active Withdrawn
- 2007-05-18 CN CN2007101034819A patent/CN101075491B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146322A (en) * | 1976-04-08 | 1979-03-27 | Canon Kabushiki Kaisha | Variable resistance |
| US4139831A (en) * | 1976-10-29 | 1979-02-13 | Georgii-Kobold August Heine Kg | Control for electrical positioning drives |
| CN2065353U (en) * | 1990-04-23 | 1990-11-07 | 张孝全 | Low-noise rotary potentiometer |
| CN1086627A (en) * | 1992-11-04 | 1994-05-11 | 陈克新 | Durable potentiometer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741892A (en) * | 2019-01-29 | 2019-05-10 | 安徽功率电气有限公司 | A kind of train spine vehicle Special-purpose potentiometer |
| CN109741892B (en) * | 2019-01-29 | 2021-03-02 | 安徽功率电气有限公司 | Special potentiometer for train scotch |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006023533B4 (en) | 2020-03-12 |
| DE102006023533A1 (en) | 2007-11-22 |
| CN101075491A (en) | 2007-11-21 |
| EP1858034A1 (en) | 2007-11-21 |
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