CN105336459B - A kind of a. c. resistance box - Google Patents
A kind of a. c. resistance box Download PDFInfo
- Publication number
- CN105336459B CN105336459B CN201510892523.6A CN201510892523A CN105336459B CN 105336459 B CN105336459 B CN 105336459B CN 201510892523 A CN201510892523 A CN 201510892523A CN 105336459 B CN105336459 B CN 105336459B
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- Prior art keywords
- switch
- resistance
- current potential
- same current
- shelves
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/50—Adjustable resistors structurally combined with switching arrangements
Abstract
The invention discloses a kind of a. c. resistance box, the resistive element is pasted on the small high-frequency ceramic plate of the coefficient of expansion using Ni-based precision resistance paper tinsel, the resistance being made of photoetching technique, it uses four ends to draw, and welds two silver-plated flat red copper wires on each exit simultaneously；The switch is plane switch, and its contact point uses plane-type contact, and contact material is silver-plated copper plate, and gear on demand is divided equally on engineering plastics；Axostylus axostyle and knob used in its XY switch rotation gear are in same current potential, while being in same current potential with the resistance of each shelves；The screening arrangement shields for switch and complete machine shields two kinds, and switch is shielding for outside switch that metal housing is housed, and input and the output of connecting wire use shielded conductor.The present invention technique effect be：It is in the metric alternating current resistance box of multi gear, it is ensured that in the resistor of different resistances shelves, as frequency change can produce the influence amount of different distributed parameters, reach the influence amount and the amount of influencing each other for eliminating each shelves resistor.
Description
Technical field
It is specially one kind the present invention relates to the amount of non-decimal alternating current resistance is passed and corrected in electromagnetic measurement field
A. c. resistance box.
Background technology
Resistance value is one of elementary cell of electricity metering.
Resistor is categorized as D.C. resistance and AC resistance.
With scientific technological advance, direct current resistor can not meet modern technologies as the transmission and correction of ohm value
Demand.The demand that AC resistance is passed as ohm amount, it appears more and more important, the national standard of related AC resistance device and school
Positive specification is worked out in succession, is included in national regulation.
A. c. resistance box is one of category of AC resistance device, is mainly used in the school to non-decimal AC resistance value
Just.The range ability of this a. c. resistance box is wide, therefore it is comparatively wide using scope, brings structure design and use requirement to be different from
DC resistance box.Its core technology is, in different frequency, due to the influence of distribution capacity and residual inductance, to make alternating current resistance
Definite value with frequency change bring different influence amounts.The added influence amount for eliminating alternating current resistance seems more prominent,
Particularly power system, space flight and aviation and means of transportation are more prominent, are the quality evaluation of General Promotion Related product, rapid shape
Into complete non-decimal alternating current resistance, the application of this a. c. resistance box is more prominent, that is, research and development have original technology
A. c. resistance box be this patent basic point.
The content of the invention
It is an object of the invention to provide a kind of a. c. resistance box, a. c. resistance box is in the metric alternating current of multi gear
In resistance box, it is ensured that in the resistor of different resistances shelves, as frequency change can produce the influence amount of different distributed parameters, disappear
Except the influence amount and the amount of influencing each other of each shelves resistor.
The technical solution adopted by the present invention is：A kind of a. c. resistance box, the switch of resistive element, junction block are equipped with by several grades
Connecting wire, cabinet, screening arrangement composition；It is characterized in that：The resistive element is pasted swollen using Ni-based precision resistance paper tinsel
On the small high-frequency ceramic plate of swollen coefficient, the resistance being made of photoetching technique, it uses four ends to draw, and is welded simultaneously on each exit
Connect two silver-plated flat red copper wires, respectively potential end, current terminal；The switch is plane switch, and its contact point uses plane
Type is contacted, and contact material is silver-plated copper plate, and gear on demand is divided equally in, the work of good insulation preformance small with dielectric loss
On engineering plastics；Axostylus axostyle and knob used in its XY switch rotation gear are in same current potential, while being in the resistance of each shelves
Same current potential；The screening arrangement shields for switch and complete machine shields two kinds, and switch is shielding for outside switch that metal housing is housed,
The input of connecting wire uses shielded conductor with output.
There are potential end and current terminal on resistive element exit of the present invention, the position of potential end and current terminal is Tongfang
To or opposite direction.
Complete machine of the present invention shielding be several gear switch all in same current potential, that is, a few gear switch metal housings
Connect in same current potential, junction block is in same current potential using shielding junction block, current terminal contact and voltage terminal.
The present invention technique effect be：It is in the metric alternating current resistance box of multi gear, it is ensured that in different resistances shelves
Resistor, as frequency change can produce the influence amount of different distributed parameters, eliminates the influence amount and mutually of each shelves resistor
Influence amount.
Brief description of the drawings
Fig. 1 is the potential end and the schematic diagram of electric current end position opposite direction on resistive element exit of the present invention.
Fig. 2 is the potential end and the equidirectional schematic diagram of electric current end position on resistive element exit of the present invention.
In figure, 1 is resistive element.
Embodiment
The design principle of the present invention is as follows：On resistive element design；Resistive element is pasted using Ni-based precision resistance paper tinsel
On the small high-frequency ceramic plate of the coefficient of expansion, the resistance being made of photoetching technique is drawn using four ends, i.e., same on each exit
When weld two silver-plated flat red copper wires, respectively potential end, current terminal, the position of two exits can be equidirectional, also can opposite direction.
This structural resistance device, because resistance value is to be pasted on porcelain plate to produce through photoetching by metal foil resistor alloy material, so electric
Hinder device in the fabrication process, the mechanical stress for not being plastically deformed and being subject to, and resistive conductor is plane, reduces collection skin
Effect, distribution capacity, residual inductance, the influence of vortex is also small, and the plastic deformation of porcelain plate influences fairly small to paper tinsel metal film, can protect
Hold the inherent technology feature of metal foil resistor material.This structural resistance device can meet the requirement of a. c. resistance box.Ni-based accurate electricity
The resistance that resistance Wire board and manganese precision resistance wire rod, sheet material are made is due to resistance device itself intrinsic distribution capacity and remnants
The presence of inductance, resistor is in design, it is necessary to fully stationary distribution capacitance and residual inductance value are compensated, to reach
Optimum state.
On the design of XY switch, switch is one of critical component of a. c. resistance box, is switched in a. c. resistance box
The major function of range swithching is played, with the switching of switch position, resistance value also changes therewith, it is to be ensured that in defined frequency
One of scope, switchs any switching laws, and its alternating current parameter is kept within the limits prescribed, and switch plays a key effect.The present invention
Switch involved by patent switchs for plane.Technical characteristic 1, the contact point of switch uses plane-type contact, and contact material is
Silver-plated copper plate, gear on demand is divided equally small with dielectric loss, on the engineering plastics of good insulation preformance.This structure will
The distance between derivation electroplax is equal, and contact resistance is small, between conduction electroplax and conductive plate, equivalent capacity between head and the tail conductive plate
For mutual definite value, the voltage not less than 200 volts can be born between conductive plate.Technical characteristic 2；Axle used in XY switch rotation gear
Bar and knob are in same current potential, while being in same current potential with the resistance of each shelves.
On the shielding measure of a. c. resistance box, a. c. resistance box must have complete shielding, AC resistance in structure
The input of case, range conversion part, inevitably there is distribution capacity, residual inductance, and collection skin effect in the position such as output end
Should, the distributed constant influence amount produced is vortexed, a. c. resistance box is, by several multivalue resistance devices, to be constituted with tandem type,
Under same frequency, each gear resistor part all bears different operating voltages, and its equivalent capacity is different and causes angular difference also each
Differ, make alternating current resistance inconsistent, influence the precision of a. c. resistance box, influence amount is solved by effective screening energy.Skill
The switch shielding of art feature 1, a. c. resistance box has several switches, and each switch is equipped with several resistor elements, every resistor
Part bears identical voltage, and R cuns of installation is also equal, and the equivalent capacity of each resistance device and switch is equal in theory, reality
Upper or variant, the 1st resistance device and n+1 resistance device are variant, therefore, whole switch is shielded, including
Switching system.Outer equipped with metal housing in switch, this outer cover plays electrostatic screen, magnetic field shielding simultaneously.The complete machine of technical characteristic 2
Shielding, a. c. resistance box is equipped with the switch of resistance device, junction block connecting wire, cabinet composition by several grades.Shielding is to alternating current
Quite crucial, the undesirable shielding of case is hindered, product when in use, because operating personnel move in operating position, can also produce sense
Potential is answered, and influences service precision.A. c. resistance box complete machine shielding be several gear switch all in same current potential, that is, several
Gear switch metal housing is connected in same current potential, and connecting seat is used at shielding connecting seat, current terminal contact and voltage terminal
In same current potential, it is ensured that casing and structural member are in constant equivalent capacitance value, the variable quantity of alternating current-direct current resistance as caused by angular difference
In minimum steady state value.All shieldings are concentrated on a shielding terminal, a. c. resistance box is on constant current potential,
This shielding terminal is on panel.
Claims (3)
1. a kind of a. c. resistance box, the switch of resistive element, junction block connecting wire, cabinet, screening arrangement group are equipped with by several grades
Into；It is characterized in that：The resistive element is pasted on the small high-frequency ceramic plate of the coefficient of expansion using Ni-based precision resistance paper tinsel, is used
The resistance that photoetching technique is made, it uses four ends to draw, and welds two silver-plated flat red copper wires on each exit simultaneously, is respectively
Potential end, current terminal；The switch is plane switch, and its contact point uses plane-type contact, and contact material is silver-plated purple
Copper coin, gear on demand is divided equally small with dielectric loss, on the engineering plastics of good insulation preformance；Its XY switch rotates shelves
Axostylus axostyle and knob used in position are in same current potential, while being in same current potential with the resistance of each shelves；The screening arrangement is to open
Close to shield and shield two kinds with complete machine, switch is shielding for outside switch equipped with metal housing, and the input and output of connecting wire are adopted
Use shielded conductor.
2. a kind of a. c. resistance box according to claim 1, it is characterised in that：There is current potential on the resistive element exit
The position of end and current terminal, potential end and current terminal is equidirectional or opposite direction.
3. a kind of a. c. resistance box according to claim 1, it is characterised in that：Complete machine shielding be several gear switch all
Connected in same current potential, that is, a few gear switch metal housings in same current potential, junction block is using shielding wiring
Seat, current terminal contact and voltage terminal are in same current potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510892523.6A CN105336459B (en) | 2015-12-08 | 2015-12-08 | A kind of a. c. resistance box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510892523.6A CN105336459B (en) | 2015-12-08 | 2015-12-08 | A kind of a. c. resistance box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105336459A CN105336459A (en) | 2016-02-17 |
| CN105336459B true CN105336459B (en) | 2017-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510892523.6A Active CN105336459B (en) | 2015-12-08 | 2015-12-08 | A kind of a. c. resistance box |
Country Status (1)
| Country | Link |
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| CN (1) | CN105336459B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015060B (en) * | 2017-03-20 | 2019-04-23 | 西安交通大学 | The AC resistance measurement method and system of transmission pressure |
| CN108387859B (en) * | 2018-05-02 | 2023-11-21 | 广州赛宝计量检测中心服务有限公司 | Analog load for metering calibration, metering calibration instrument and metering calibration system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645187Y (en) * | 2003-09-15 | 2004-09-29 | 广州赛宝计量检测中心服务有限公司 | Precision AC / DC resistance box |
| CN103513210A (en) * | 2013-10-11 | 2014-01-15 | 内蒙古自治区计量测试研究院 | Inductance, capacitance and resistance standard device |
| CN104240875A (en) * | 2014-09-15 | 2014-12-24 | 北京东方计量测试研究所 | Bunchy core wire alternating current-direct current difference calculating resistor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075379U (en) * | 1990-11-02 | 1991-04-17 | 天津市无线电五厂科技开发部 | Mini-resistor with button switch |
| US6259351B1 (en) * | 1999-10-01 | 2001-07-10 | Pass & Seymour, Inc. | Toggle and slide dimmer switch |
| CN201804647U (en) * | 2010-08-04 | 2011-04-20 | 中国人民解放军63680部队 | High-voltage and high-resistance resistor box |
| CN202473455U (en) * | 2011-12-14 | 2012-10-03 | 内蒙古自治区计量测试研究院 | Precision transitional multifunctional resistance box |
| CN203982936U (en) * | 2014-02-24 | 2014-12-03 | 杭州大华仪器制造有限公司 | A kind of novel AC resistance device structure |
-
2015
- 2015-12-08 CN CN201510892523.6A patent/CN105336459B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645187Y (en) * | 2003-09-15 | 2004-09-29 | 广州赛宝计量检测中心服务有限公司 | Precision AC / DC resistance box |
| CN103513210A (en) * | 2013-10-11 | 2014-01-15 | 内蒙古自治区计量测试研究院 | Inductance, capacitance and resistance standard device |
| CN104240875A (en) * | 2014-09-15 | 2014-12-24 | 北京东方计量测试研究所 | Bunchy core wire alternating current-direct current difference calculating resistor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105336459A (en) | 2016-02-17 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An AC resistance box Effective date of registration: 20230327 Granted publication date: 20171103 Pledgee: Zhejiang Fuyang Rural Commercial Bank Co.,Ltd. Dayuan sub branch Pledgor: HANGZHOU DAHUA APPARATUS MANUFACTURE CO.,LTD. Registration number: Y2023980036087 |
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