CN106373687A - Resistance-adjusting structure of foil type precision resistor - Google Patents
Resistance-adjusting structure of foil type precision resistor Download PDFInfo
- Publication number
- CN106373687A CN106373687A CN201610795454.1A CN201610795454A CN106373687A CN 106373687 A CN106373687 A CN 106373687A CN 201610795454 A CN201610795454 A CN 201610795454A CN 106373687 A CN106373687 A CN 106373687A
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- Prior art keywords
- resistance
- resistor
- grid
- precision
- adjust
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/16—Adjustable resistors including plural resistive elements
Abstract
The invention discloses a resistance-adjusting structure of a foil type precision resistor. The resistance-adjusting structure comprises a basis resistor gate formed on a metal foil plane, wherein multiple gradually-adjusted resistor gates are connected with the outer side of the edge of the basis resistor gate in series for performing accurate adjustment on the resistance value of the resistor; the gradually-adjusted resistor gates and short-circuit cutting gates form at least one group of parallel structure; all the parallel structures are connected in series; cutting marks are arranged on the short-circuit cutting gates for positioning and cutting; two signal lead-out ends are designed on two edge corners distributed on the basis resistor gate while multiple symmetrically-arranged grooves are formed in the edge and the interior of the basis resistor gate; and the two signal lead-out ends are connected with the starting point and the end point of the basis resistor gate respectively. By adoption of the resistance-adjusting structure, the performance stability of the resistor product can be ensured in a more comprehensive manner; by virtue of the design of resistor gate strips with parallel structures, the gradually-adjusted resistor gates of multiple combinations, and the reasonable layout of the overall resistor, the resistance-adjusting precision and resistance-adjusting convenience are ensured, the actual non-capacitive and non-inductive design is realized, and the increasingly high technological requirement on the abovementioned precision measurement instrument and each application field can be satisfied.
Description
Technical field
The invention belongs to resistor field is and in particular to a kind of Foil-type precision resistor device resistance trimming structure.
Background technology
In the neck such as Aeronautics and Astronautics, the inertial navigation of navigation, distribution control, precision instrumentation, accurate measurement and science and techniques of defence
In domain, high-accuracy resistor various shunting dividing ratios networks and d/a, a/d network etc. as precise control circuit in electric current,
The standard of comparison of voltage, they have, and resistance value high precision, temperature-coefficient of electrical resistance be low, distributed inductance and electric capacity is little, stable performance
Advantage with small volume.With these fields to aspects such as control accuracy, the stability of test and reliabilities, it is required to accomplish essence
Really, stable, reliable control it is desirable to more and more higher.
At present, the resistor on market mainly has metal foil resistor, metal film resistor, wire wound resistor etc..In height
In precision resistor, each of metal foil resistor is better than metal film resistor and wire wound resistor to performance, through frequently as high-precision
Close resistor first by element.And find after our research and analysis, in the prior art, within metal foil resistor
Core parts " chip " design existing defects, and specially itself design structure of chip circuit still can produce or bring additional electrical
Hold, inductance and thus design lead to damage in its production process to cause the decline of resistor stability, Noise figure to increase
Greatly, resistor resistance trimming complex process.
Content of the invention
It is an object of the invention to overcoming above-mentioned deficiency, provide a kind of Foil-type precision resistor device resistance trimming structure it is achieved that true
In positive meaning no hold non-inductance design, resistance is adjustable step by step, resistance control accuracy, stability and the higher precision resistance of reliability
Device.
In order to achieve the above object, one's own department or unit resistance grid being formed be present invention resides on metal forming plane, in one's own department or unit resistance
Connecting outside the edge of grid, several adjust resistance grid step by step, for resistor resistance fine adjustment, adjust step by step resistance grid with
Short-circuit cutting grate forms least one set parallel-connection structure, and all parallel-connection structures are connected together, are formed and adjust step by step, on short-circuit cutting grate
It is provided with cutting sign, two corners of one's own department or unit resistance grid distribution are provided with two signal exits, its edge and inside
There is the groove of multiple symmetric arrays, two signal exits are connected with the starting point of one's own department or unit resistance grid and destination node respectively
The design resistance range of described one's own department or unit resistance grid is the 50～80% of precision resistor nominal resistance.
The wiring topology of the routing path of described one's own department or unit resistance grid, the routing path adjusting resistance grid step by step and short circuit cutting grate
Footpath using parallel wiring or is mutually perpendicular to wiring, symmetric design, and its line parallel degree is respectively less than 10.0 μm/m, and perpendicularity difference is little
In 0.01 °.
The design series of the described resistance grid of regulation step by step is as follows:
Adjust step by step and be 5 ω～100 ω when resistor nominal resistance, when resistance adjustable precision is 0.1%, it designs number
Measure as 8～14 grades；Adjust resistance grid step by step adjusts resistance maximum magnitude for the 45% of precision resistor normal resistance；
When resistor nominal resistance is 100 ω～1000 ω, resistance adjustable precision is 0.01%, its design quantity is
12～18 grades；Adjust resistance grid step by step adjusts resistance range for the 40% of precision resistor normal resistance；
When resistor nominal resistance is 1k ω～10k ω, resistance adjustable precision is 0.005%, and its design quantity is 16
～22 grades；Adjust resistance grid step by step adjusts resistance range for the 40% of precision resistor normal resistance；
When resistor nominal resistance be 10k ω～20k ω, resistance adjustable accuracy be 0.001%, its design quantity be 18～
26 grades；Adjust resistance grid step by step adjusts resistance range for the 40% of precision resistor normal resistance.
Fracture on described short circuit cutting grate is disconnected using machine cuts mode or cut mode, forms resistance and adjusts
Section, this foil resistance resistance adjusts and can only increase, and the size in other regions of resistor, resistance precision, stability etc. are not all produced
Raw any impact.
Compared with prior art, the present invention can more comprehensively ensure resistor product stable performance, parallel construction
Resistance grizzly bar designs, multiple combination adjust resistance grid design and the overall rational deployment of resistive element step by step it is ensured that resistance trimming
The convenience of precision and resistance trimming, it is achieved that no appearance non-inductance design truly, meets aforementioned fine measuring instrument and each should
With the higher and higher technical requirements in field.
Further, one's own department or unit of the present invention resistance grid, adjust step by step resistance grid, short-circuit cutting grate and signal exit all with
One metal forming plane, can effectively ensure that the actual electric capacity of precision resistor is less than 0.001pf.
Brief description
Fig. 1 is the structural representation of invention；
Wherein, 1, one's own department or unit resistance grid；2nd, adjust resistance grid step by step；3rd, short-circuit cutting grate；4th, signal exit.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 1, one's own department or unit resistance grid 1 being formed be present invention resides on metal forming plane, at the edge of one's own department or unit resistance grid 1
Connecting in outside, several adjust resistance grid 2 step by step, for resistor resistance fine adjustment, adjust resistance grid 2 step by step and cut with short circuit
Cut grid 3 composition least one set parallel-connection structure, all parallel-connection structures are connected together, and short-circuit cutting grate 3 is designed with cutting sign, profit
In positional dissection, two signal exits 4, its edge and internal tool are designed with two corners of one's own department or unit resistance grid 1 distribution
There is the groove of multiple symmetric arrays, two signal exits are connected with the starting point of one's own department or unit resistance grid 1 and destination node respectively.
Metal forming is precision electrical resistance alloy paper tinsel, and it is shaped with roll compacting；
One's own department or unit resistance grid 1 is the ingredient of the body resistance value of precision resistor.Using parallel construction design, symmetrically set
The principle counted, connects the multiple regulation resistance grid 2 step by step of design in the periphery of one's own department or unit resistance grid 1 distribution.
The resistance range of one's own department or unit resistance grid 1 is the 50～80% of precision resistor nominal resistance；
Adjust the ingredient of the adjusting resistance value that resistance grid 2 is precision resistor step by step.The setting of its sum of series quantity
Meter principle is the nominal resistance according to precision resistor and distribution of resistance scope, precision resistor during the resistance grid actual production of one's own department or unit
Positioning resistance precision grade and determine.
The design series of regulation resistance grid 2 step by step:
Resistor nominal resistance be 5 ω～100 ω, resistance adjustable precision be 0.1% when, its design quantity be 8～
14 grades；Adjust resistance grid 2 step by step adjusts resistance range for the 45% of precision resistor normal resistance；
It is 100 ω～1000 ω in resistor nominal resistance, resistance adjustable precision is 0.01%, its design quantity is 12
～18 grades；Adjust resistance grid 2 step by step adjusts resistance range for the 40% of precision resistor normal resistance；
It is 1k ω～10k ω in resistor nominal resistance, resistance precision is 0.005%, and its design quantity is 16～22 grades；
Adjust resistance grid 2 step by step adjusts resistance range for the 40% of precision resistor normal resistance；
It is 10k ω～20k ω in resistor nominal resistance, resistance precision is 0.001%, its design quantity is 18～26
Level；Adjust resistance grid 2 step by step adjusts resistance range for the 40% of precision resistor normal resistance；
It is less than 5 ω in resistor nominal resistance, steep higher than its design of resistor of 0.1% resistance precision and difficulty of processing
Increase；
It is more than 20k ω in resistor nominal resistance, higher than its resistance chip size meeting of resistor of 0.001% resistance precision
Increase, adjusting resistance grid series step by step also can increase.
The ingredient of adjusting resistance value when short-circuit cutting grate 3 produces for precision resistor.It with step by step adjust resistance grid 2
Form the regulation grid of one or more groups of series parallel structures.When precision resistor production needs, will by a kind of " disconnection method "
The short-circuit cutting grate 3 being pre-designed cutting sign disconnects, and is connected on the resistance grid of regulation step by step 2 within resistor and just plays
Design function, positively have adjusted the resistance of precision resistance.
Disconnection method typically selects the mode of machine cuts, the mode of cut to disconnect short-circuit cutting grate 3.
Short-circuit cutting grate 3 is in parallel with the corresponding resistance grid 2 that adjusts step by step, the then series connection of so multigroup unit, and composition is accurate
The regulation grid structure of resistor；Described short circuit its structure of cutting grate 3 is completely similar, and its physical dimension fully meets machinery or laser
Positioning and cutting demand that mode is cut, resistance value is fixed and relatively small, so that forming simultaneously with adjusting resistance grid 2 step by step
Connection resistance value is little as far as possible, to reduce the impact to basic resistance, by the short-circuit cutting grate 3 end top bump position of cut-out,
Change the current path of corresponding parallel resistance, reach, by changing short circuit paths, the purpose heightening resistance value；
Signal exit 4 is connected with the starting point of one's own department or unit resistance grid 1 and destination node respectively, and its edge and indoor design have
The groove of the symmetric arrays of multiple rules, is beneficial to the radiating of local and being accurately positioned of external electrode extraction after resistance energising, protects
The heat stability of card resistance.
No it is installed with meter: one's own department or unit resistance grid 1, step by step regulation resistance grid 2, short-circuit cutting grate 3, signal exit 4 are all same
Individual metal forming plane, ensures this four major part of precision resistor in the same plane by the peaceful production. art of looking unfamiliar of structure design,
Then it is so designed that and can effectively ensure that the actual electric capacity of precision resistor is less than 0.001pf；
Non-inductance design: connected up using parallel wiring or be mutually perpendicular to, symmetric design principle designs the cloth of its one's own department or unit resistance grid 1
Thread path, the routing path adjusting resistance grid 2 step by step, the routing path of short-circuit cutting grate 3, its line parallel degree is respectively less than 10.0
μm/m, perpendicularity difference is less than 0.01 °；Parallel or vertical, symmetrical routing path design is so that pass through adjacent resistor grid
Size of current is equal, in opposite direction, adjacent resistor gate length is equal, be equally spaced, and effectively reduces precision resistance resistance trimming figure
The mutual induction amount that shape is brought due to design；
Resistance precision design: design one or more groups of step by step adjust resistance grids 2 it is ensured that produce when precision resistor resistance
Precision is controlled；The resistance grid of regulation step by step 2 of some different adjustment amounts is set, and the resistance precision of multi-ensuring precision resistor is actual
Control；
Reliability design: by design the grid width of one's own department or unit resistance grid 1 and grid spacing, adjust step by step the grid width of resistance grid 2 with
Grid spacing, the width of short-circuit cutting grate 3 are it is ensured that all kinds of resistance grid, under rated current or rated power working condition, has good
Good radiating and soakage function；Meet coupling simultaneously and aging resistance requires, reach optimal reliability design.
Claims (5)
1. a kind of Foil-type precision resistor device resistance trimming structure is it is characterised in that include one's own department or unit resistance being formed in metal forming plane
Grid (1), connecting outside the edge of one's own department or unit resistance grid (1), several adjust resistance grid (2) step by step, accurate for resistor resistance
Adjust, adjust resistance grid (2) and short-circuit cutting grate (3) composition least one set parallel-connection structure, all parallel-connection structure series connection one step by step
Rise, formed and adjust step by step, short-circuit cutting grate (3) is provided with cutting sign, on two corners that one's own department or unit resistance grid (1) is distributed
It is provided with two signal exits (4), its edge and inside have the groove of multiple symmetric arrays, and two signal exits are respectively
It is connected with the starting point of one's own department or unit resistance grid (1) and destination node.
2. a kind of Foil-type precision resistor device resistance trimming structure according to claim 1 is it is characterised in that described one's own department or unit resistance grid
(1) design resistance range is the 50～80% of precision resistor nominal resistance.
3. a kind of Foil-type precision resistor device resistance trimming structure according to claim 1 is it is characterised in that described one's own department or unit resistance grid
(1) routing path, the routing path of the routing path of regulation resistance grid (2) and short circuit cutting grate (3) step by step adopt parallel cloth
Line or be mutually perpendicular to wiring, symmetric design, its line parallel degree be respectively less than 10.0 μm/m, perpendicularity difference be less than 0.01 °.
4. a kind of Foil-type precision resistor device resistance trimming structure according to claim 1 is it is characterised in that described adjust electricity step by step
The design series of resistance grid (2) is as follows:
Adjust step by step and be 5 ω～100 ω when resistor nominal resistance, when resistance adjustable precision is 0.1%, its design quantity is
8～14 grades；Adjust resistance grid step by step adjusts resistance maximum magnitude for the 45% of precision resistor normal resistance；
When resistor nominal resistance be 100 ω～1000 ω, resistance adjustable precision be 0.01%, its design quantity be 12～
18 grades；Adjust resistance grid step by step adjusts resistance range for the 40% of precision resistor normal resistance；
When resistor nominal resistance is 1k ω～10k ω, resistance adjustable precision is 0.005%, and its design quantity is 16～22
Level；Adjust resistance grid step by step adjusts resistance range for the 40% of precision resistor normal resistance；
When resistor nominal resistance is 10k ω～20k ω, resistance adjustable accuracy is 0.001%, and its design quantity is 18～26
Level；Adjust resistance grid step by step adjusts resistance range for the 40% of precision resistor normal resistance.
5. a kind of Foil-type precision resistor device resistance trimming structure according to claim 1 it is characterised in that described short circuit cutting grate
(3) fracture on is disconnected using machine cuts mode or cut mode, forms resistance and adjusts, this foil resistance resistance is adjusted
Can only increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795454.1A CN106373687B (en) | 2016-08-31 | 2016-08-31 | A kind of Foil-type precision resistor device resistance trimming structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795454.1A CN106373687B (en) | 2016-08-31 | 2016-08-31 | A kind of Foil-type precision resistor device resistance trimming structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106373687A true CN106373687A (en) | 2017-02-01 |
| CN106373687B CN106373687B (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610795454.1A Active CN106373687B (en) | 2016-08-31 | 2016-08-31 | A kind of Foil-type precision resistor device resistance trimming structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609947A (en) * | 2020-05-20 | 2020-09-01 | 重庆斯太宝科技有限公司 | High-precision temperature sensor chip circuit structure and resistance adjusting method thereof |
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| CN85106536A (en) * | 1984-07-31 | 1987-03-18 | 罗斯蒙德公司 | Form the method for platinum electricity group thermometer |
| JPH01164001A (en) * | 1987-12-21 | 1989-06-28 | Yamatake Honeywell Co Ltd | Thin film resistance element |
| CN101577161A (en) * | 2009-05-26 | 2009-11-11 | 北京七一八友晟电子有限公司 | High-voltage precise resistance divider and preparation method thereof |
| CN201430039Y (en) * | 2009-06-22 | 2010-03-24 | 济宁正和电子有限责任公司 | Metal foil resistor with extraction electrode having buffering protection function |
| CN204537788U (en) * | 2015-05-13 | 2015-08-05 | 凌海科诚电力电器制造有限责任公司 | The netted noninductive resistor of some tubercle |
| CN105241371A (en) * | 2015-10-28 | 2016-01-13 | 上海应用技术学院 | Resistance strain gauge |
-
2016
- 2016-08-31 CN CN201610795454.1A patent/CN106373687B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85106536A (en) * | 1984-07-31 | 1987-03-18 | 罗斯蒙德公司 | Form the method for platinum electricity group thermometer |
| JPH01164001A (en) * | 1987-12-21 | 1989-06-28 | Yamatake Honeywell Co Ltd | Thin film resistance element |
| CN101577161A (en) * | 2009-05-26 | 2009-11-11 | 北京七一八友晟电子有限公司 | High-voltage precise resistance divider and preparation method thereof |
| CN201430039Y (en) * | 2009-06-22 | 2010-03-24 | 济宁正和电子有限责任公司 | Metal foil resistor with extraction electrode having buffering protection function |
| CN204537788U (en) * | 2015-05-13 | 2015-08-05 | 凌海科诚电力电器制造有限责任公司 | The netted noninductive resistor of some tubercle |
| CN105241371A (en) * | 2015-10-28 | 2016-01-13 | 上海应用技术学院 | Resistance strain gauge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609947A (en) * | 2020-05-20 | 2020-09-01 | 重庆斯太宝科技有限公司 | High-precision temperature sensor chip circuit structure and resistance adjusting method thereof |
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| CN106373687B (en) | 2018-08-24 |
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