CN105788788B - One kind rotary ten enters semifixed resistor case preparation method - Google Patents
One kind rotary ten enters semifixed resistor case preparation method Download PDFInfo
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- CN105788788B CN105788788B CN201610184379.5A CN201610184379A CN105788788B CN 105788788 B CN105788788 B CN 105788788B CN 201610184379 A CN201610184379 A CN 201610184379A CN 105788788 B CN105788788 B CN 105788788B
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- disk
- resistance
- semifixed resistor
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- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims description 5
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/16—Adjustable resistors including plural resistive elements
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses one kind rotary ten to enter semifixed resistor case method, using existing standard resistance box, the high-order disk for the disk that need not add measurement is transformed, makes high-order disk into semifixed resistor disk, the resistive element of its high-order disk is all removed during making, by measuring resistance RSHigh-order disk circuit input, the output both ends are welded in, by corresponding to the auxiliary resistance R of the 10 of indicating value 0 to 10 different resistancesNThe disk, dynamic and static contact elder generation and auxiliary resistance R are sequentially accessed respectivelyNAfter series connection, then with measuring resistance RSParallel connection, finally it is connected in series in way circuit.Sheet rotary ten, which enters semifixed resistor case preparation method, can improve one, semifixed resistor case and the class of accuracy of the above；It may be such that the digit after resistance box output valve decimal point is increased, often increase a resolution for then improving ten times；It is improved using existing standard resistance box, is put into without additional finance.
Description
Technical field
The present invention relates to a kind of semifixed resistor case, is particularly applicable the one of a kind of measurement verification electric bridge or digital thermometer
Kind rotary ten enters semifixed resistor case preparation method.
Background technology
Generally, often disk output resistance is all dynamic and static by one group of series resistance and resistance selection to rotary decade resistor
Contact forms.Series resistance is bigger, and the contact resistance r of its dynamic and static contact is more negligible, it is on the contrary then can not.Rotary ten enter mark
Quasi- resistance box（Hereinafter referred to as resistance box）It is composed in series by multiple resistance disks, can be as electric bridge or the standard of digital thermometer.
However, due to resistance box, there is the contact resistance of dynamic and static contact so that the resistance disk of the following digit of resistance box decimal point is accurate
Degree is not high.As the resistance box of standard, accredited electric bridge or digital thermometer two are typically higher than to its class requirement
Individual and above class of accuracy, another is resolution, i.e. bit requirements.So can a resistance box be used as electric bridge or number
The standard of word thermometer, actually select the class of accuracy and its digit of resistance box.If resolution（That is digit）
Deficiency, when examining and determine electric bridge, electric bridge does not adjust balance；When examining and determine digital thermometer, show value is discontinuous, can jump.
The content of the invention
Do not influenceed present invention aims to indicating value reality output by contact resistance r, thus it is accurate in digit
Degree has significantly improve a kind of rotary ten to enter semifixed resistor case preparation method.
One kind rotary ten enters semifixed resistor case method, is to utilize existing standard resistance box, need not add measurement and (survey
The disk set to 0 all the time during amount) high-order disk transformed, make high-order disk into semifixed resistor disk, by the electricity of its high-order disk during making
Resistance element is all removed, by measuring resistance RSHigh-order disk circuit input, the output both ends are welded in, indicating value 0 to 10 will be corresponded to
10 different resistances auxiliary resistance RNThe disk, dynamic and static contact elder generation and auxiliary resistance R are sequentially accessed respectivelyNAfter series connection, then with
Measuring resistance RSParallel connection, be finally connected in series in way circuit, the output valve of auxiliary resistance is 10,11......19,20, and RN ≥
RSIf the all-in resistance that semifixed resistor disk exports after parallel connection is RSC, RSC=N, N are exported for needs and accurate desired value (10~20),
RSC=RS*RN/(RS+RN), by determining measuring resistance RSValue, so that it may determine auxiliary resistance RN Value, due to semifixed resistor disk
Auxiliary resistance RNEach output valve for 10,11,12 ... 19,20m, need often indicating value subtracting 10m Ω for this, i.e., by 10m
Ω is transferred to a resistance disk, this disk indicating value only has 0,1,2 ... 9,10, a upper resistance disk is the previous of semifixed resistor disk
Disk is entered in position ten, is changed ten and enters disk, need to only change the original position of the disk, i.e., pass through dislocation using dislocation method, its scale numerical value
Method is handled as follows:1 is changed to by 0, be changed to 2...... by 1 is changed to 10 by 9, and 0 is changed to by 10, and ten after the transformation of the way enter disk, and it is exported
It is worth and original consistent.
The present invention makes a kind of rotary ten high-order disks for entering semifixed resistor case of standard into a semifixed resistor disk, micro-
Adjust and measuring resistance R is introduced in resistance diskS, and the input for being welded in this resistance disk circuit that is fixed, output both ends, due to moving,
Static contact connects, and junction can produce contact resistance r.And contact resistance r is first and auxiliary resistance R after adding measuring resistanceNString
After connection, then with accurately measuring resistance RSParallel connection, finally it is connected in series in way circuit.So that circuit output is not touched directly by dynamic and static
The influence of head contact resistance.So as to improve the measurement accuracy of micro resistance case.
10 auxiliary resistance RNIt is the accurate type wire wound resistor using pointer multimeter.
Described measuring resistance RSFor make by oneself resistance, using the high copper-manganese resistance wire of stability after burin-in process on demand
Accurate coiling forms.
In summary, the present invention has the following advantages compared with prior art:
Sheet rotary ten, which enters semifixed resistor case preparation method, can improve one, semifixed resistor case and the class of accuracy of the above；
It may be such that the digit after resistance box output valve decimal point is increased, often increase a resolution for then improving ten times；Using now
There is standard resistance box to be improved, put into without additional finance；Several electricity after standard resistance box decimal point can be carried out by this method
Disk is hindered, the degree of accuracy of overall standard resistance box and resolution ratio is obtained bigger raising.
Brief description of the drawings
Fig. 1 is the semifixed resistor disk circuit diagram of the present invention.
Fig. 2 is the semifixed resistor case way circuit figure of the present invention.
The standard resistance box ZX25a ten of label declaration 1 enters to rotate the measuring resistance R of resistance disk 2S3 auxiliary resistance RN（N=
1~10）4 dynamic and static switch contacts K.
Embodiment
The present invention is described in more detail with reference to specific embodiment
Embodiment 1
A kind of as shown in Figure 1 rotary ten enter semifixed resistor case（Hereinafter referred to as semifixed resistor case）, including it is multiple
Resistance disk and a semifixed resistor disk, semifixed resistor disk include dynamic and static switch contacts K 4, measuring resistance RS 2,10 differences
The auxiliary resistance R of resistanceN 3.Can also be the improvement to existing resistance box, exemplified by being improved below in conjunction with standard resistance box ZX25a
Illustrate.ZX25a the key technical indexes is：Enter to rotate resistance disk 1 by 6 ten to be composed in series, continuously adjustabe, adjustable range
(0.01 ~ 1111.11) Ω, its error of the highest degree of accuracy are 2/10000ths；2 level exactness its error are respectively 1% He after decimal point
5%.By the rotating disk switch K dynamic and static contact connection of multiple silver, junction can produce contact resistance r for the output of resistance value.Standard electric
Case is hindered when exporting milliohm mother level or smaller resistance value, because output small resistor is to connect in circuit, contact resistance r shadow
Sound is quite big, therefore the degree of accuracy of the later disk of resistance box decimal point is not high.Contact resistance r presence, influences standard resistance box
The increase of digit after decimal point.
The making and utilization of semifixed resistor case, it is to utilize existing standard resistance box, measurement need not be added and (begun during measurement
The disk set to 0 eventually) high-order disk transformed.Exemplified by using ZX25a standard resistance boxs below, semifixed resistor disk is added into its thousand points of positions
Disk（The 3rd after decimal point）It is illustrated：The resistive element of its high-order disk is all removed during making, by homemade measuring resistance
RS2 are welded in disk circuit input, output both ends, by corresponding to the auxiliary resistance R of indicating value 0 to 10NThe disk is sequentially accessed respectively.
Due to measuring resistance RS2 fixations are welded in the input of this resistance disk, output both ends so that circuit output is not directly by contact resistance
Influence.Contact resistance r is first and auxiliary resistance RNAfter series connection, then with accurately measuring resistance RSParallel connection, finally it is connected in series to total electricity
Lu Zhong.10 auxiliary resistance RNIt is the accurate type wire wound resistor using pointer multimeter, and is obtained by the self-control of the calculated value of table one.If
In meter, R is takenS=20 mΩ, RN ≥RSIf the all-in resistance that semifixed resistor disk exports after parallel connection is RSC, RSC=N, N are to need to export
And accurate desired value (10~20), RSC=RS*RN/(RS+RN), then RN=20*N/ (20-N), specific calculate are shown in Table one.
The auxiliary resistance RN of table one calculated value, unit: mΩ
| Indicating value disk N | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| RN | 20 | 24.44 | 30 | 37.14 | 46.67 | 60 | 80 | 113.3 | 180 | 380 | Neutral |
Because rotating disk switch K contact resistance r elder generations and auxiliary resistance RNAfter series connection again with RSParallel connection, its all-in resistance are main
By accurate resistance RS(small resistance value) determines.And rotating disk switch K contact resistances r is much smaller than RN, so semifixed resistor disk can be defeated
Go out accurately resistance value, and be substantially not subject to contact resistance elder generation r influence.
Due to each output valve of semifixed resistor disk is 10,11,12 ... 19,20m, need often indicating value subtracting 10m for this
Ω, i.e., 10m Ω are transferred to upper disk P, this disk only has 0,1,2 ... 9,10 so that each disk reading is consistent, directly perceived.Upper one
Ten, which enter the previous position ten that disk P is semifixed resistor disk, enters disk, and its numerical value is handled as follows:1 is changed to by 0,2...... is changed to by 1
10 are changed to by 9,0 is changed to by 10, i.e., 10 are shorted to 0.Changed ten and enter disk P, in change, need to only change the start bit of the disk
Put, i.e., using dislocation method.When the resistance value of each disk is all set to 0, the output resistance of standard resistance box now is referred to as residual resisitance
rC,（Or 0 value resistance）, the 10m Ω of a disk P are transferred to as residual resisitance rC,, corrigendum deduction is carried out in accurate metering.
In use, if desired numerical value 5, rotary fine adjustment resistance disk put 5, then RSWith auxiliary resistance RN5Parallel connection, semifixed resistor disk now provide
Exact value 5, remaining numerical method are identical.It can be seen that from table one, work as RNWhen=20（Minimum value）, influenceed relatively by contact resistance r
It is maximum.Now RSCR can be become/ SC=RS*（RN+ r）/(RS+RN+ r).Solution is：By technological means, measure by
Change disk electric shock resistance r size so that selected RNA r value is approximately less than than theoretical value, to keep semifixed resistor disk RSCOutput is accurate.
Improved standard resistance box ZX25a（By be not required to use × 1000 Ω highest order disks changed it）, its adjustable range is changed into
(0.000 ~ 111.110) Ω, resolution improve 10 times, and the degree of accuracy can also improve several grades.
The not described part of the present embodiment is same as the prior art.
Claims (3)
1. one kind rotary ten enters semifixed resistor case method, it is characterised in that：Using existing standard resistance box, need not add
The high-order disk of the disk of measurement is transformed, and makes high-order disk into semifixed resistor disk, the resistive element of its high-order disk is full during making
Portion is removed, by measuring resistance RSBe welded in high-order disk circuit input, output both ends, by corresponding to the 10 of indicating value 0 to 10 not
With the auxiliary resistance R of resistanceNThe disk, dynamic and static contact elder generation and auxiliary resistance R are sequentially accessed respectivelyNAfter series connection, then with measuring resistance
RSParallel connection, finally it is connected in series in way circuit, the output valve of auxiliary resistance is 10 m, the m of 11 m ... 19,20 m,
And RN ≥RSIf the all-in resistance that semifixed resistor disk exports after parallel connection is RSC, RSC=N, N are that needs export and accurately desired value is
10~20, RSC=RS*RN/(RS+RN), by determining measuring resistance RSValue, so that it may determine auxiliary resistance RN Value, due to micro-
Adjust resistance disk auxiliary resistance RNEach output valve for 10 m, 11 m, 12 m ... 19 m, 20m, needed for this by
10m Ω are subtracted per indicating value, i.e., 10m Ω are transferred to a upper resistance disk, this disk indicating value only have 0 m, 1 m, 2 m,
... 9 m, 10 m, a upper resistance disk are that disk is entered in the previous position ten of semifixed resistor disk, are changed ten and enter disk, only need to change this
The original position of disk, i.e., it is handled as follows using dislocation method, its scale numerical value by dislocation method:1 is changed to by 0,1 is changed to
2...... 10 are changed to by 9,0 are changed to by 10, ten after the transformation of the way enter disk, its output valve with it is original consistent.
2. one kind rotary ten according to claim 1 enters semifixed resistor case method, it is characterised in that：10 auxiliary resistances
RNIt is the accurate type wire wound resistor using pointer multimeter.
3. one kind rotary ten according to claim 2 enters semifixed resistor case method, it is characterised in that：Described standard electric
Hinder RSTo make resistance by oneself, using the high copper-manganese resistance wire of stability, accurate coiling forms on demand after burin-in process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184379.5A CN105788788B (en) | 2016-03-29 | 2016-03-29 | One kind rotary ten enters semifixed resistor case preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184379.5A CN105788788B (en) | 2016-03-29 | 2016-03-29 | One kind rotary ten enters semifixed resistor case preparation method |
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| Publication Number | Publication Date |
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| CN105788788A CN105788788A (en) | 2016-07-20 |
| CN105788788B true CN105788788B (en) | 2018-03-30 |
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| CN112600534B (en) * | 2021-01-04 | 2024-06-11 | 广州千语软件信息科技有限公司 | Control method of adjustable resistor combination circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU679899A1 (en) * | 1976-05-17 | 1979-08-15 | Предприятие П/Я В-2539 | Master dc potentiometer |
| JPH10213410A (en) * | 1997-01-28 | 1998-08-11 | Matsushita Electric Ind Co Ltd | Rotary throttle position sensor |
| CN1387293A (en) * | 2001-05-17 | 2002-12-25 | 台达电子工业股份有限公司 | Power supply device with stand-by AC function |
| CN203366884U (en) * | 2013-05-30 | 2013-12-25 | 国家电网公司 | Gear-driven-based micro-adjustable precision potentiometer |
| CN103954837A (en) * | 2014-05-09 | 2014-07-30 | 重庆大学 | Device for measuring resistance continuous variation of objects and measuring method |
-
2016
- 2016-03-29 CN CN201610184379.5A patent/CN105788788B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU679899A1 (en) * | 1976-05-17 | 1979-08-15 | Предприятие П/Я В-2539 | Master dc potentiometer |
| JPH10213410A (en) * | 1997-01-28 | 1998-08-11 | Matsushita Electric Ind Co Ltd | Rotary throttle position sensor |
| CN1387293A (en) * | 2001-05-17 | 2002-12-25 | 台达电子工业股份有限公司 | Power supply device with stand-by AC function |
| CN203366884U (en) * | 2013-05-30 | 2013-12-25 | 国家电网公司 | Gear-driven-based micro-adjustable precision potentiometer |
| CN103954837A (en) * | 2014-05-09 | 2014-07-30 | 重庆大学 | Device for measuring resistance continuous variation of objects and measuring method |
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| CN105788788A (en) | 2016-07-20 |
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