CN2791782Y - Multi-purpose experiment instrument for electromagnetism - Google Patents
Multi-purpose experiment instrument for electromagnetism Download PDFInfo
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- CN2791782Y CN2791782Y CN 200420069485 CN200420069485U CN2791782Y CN 2791782 Y CN2791782 Y CN 2791782Y CN 200420069485 CN200420069485 CN 200420069485 CN 200420069485 U CN200420069485 U CN 200420069485U CN 2791782 Y CN2791782 Y CN 2791782Y
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Abstract
The utility model discloses an electromagnetism multipurpose experimental instrument. A visual integrated circuit and a plurality of binding posts are arranged on a panel. As long as correlative elements are respectively inserted into the corresponding binding posts as required, more than ten electromagnetism experiments can be conducted, such as the research of a limited current circuit and a voltage division circuit, a voltammetry resistance detection experiment, an internal resistance of a meter head detection experiment, a Wheatstone bridge inductance detection experiment, a low-resistance detection experiment, a farad bridge capacitance detection experiment, an inductance bridge inductance detection experiment, etc. The utility model has the advantages of simple operation, good effect and low cost.
Description
Technical field:
The utility model relates to a kind of teaching experimental apparatus, particularly relates to a kind of electromagnetics and uses experiment instrument more.
Background technology:
In colleges and universities' Experiments of Electromagnetism, do experiment with existing instrument, often an instrument can only be done an experiment.As electric meter refitting, Wheatstone bridge, low-resistance measurement, also owing to commodity packaging, the student is not easy to grasp to the structure of instrument.The student is often bad owing to circuit contacts when circuit connects, the time wire break arranged, electricity component inconvenience is fixing, element under test connects shakiness etc., to circuit is broken down, searching the expensive time of fault sometimes, and different experiments is used different experimental apparatuss, experimental facilities has high input, experiment formality complexity.
The utility model content:
For utilization rate and the solution circuit articulation issues that improves experimental apparatus, the utility model provides a kind of circuit simple and clear, simple to operation, and the gratifying electromagnetics of result is used experiment instrument more, the effect of many instruments of price of an instrument, the electromagnetics that the equipment input is economized is used experiment instrument more.
How a kind of electromagnetics of the utility model with the technical scheme of experiment instrument be: it comprises casing, panel on the casing, panel is provided with gauge outfit A1, shelves are lived K switch 2, ratio arms Ra3, potentiometer Rm4, it is characterized in that: on panel, be provided with if wiring inserting column 5, potentiometer Rm4 respectively with gauge outfit A1, wiring inserting column 5-8 Chang Liantong, potentiometer Rm4 and gauge outfit A1 are composed in series ammeter resistance, wiring inserting column 5-8 and wiring inserting column 5-5 Chang Liantong, wiring inserting column 5-4 respectively with the initial point UNICOM of gauge outfit A1 and driving switch K2, described driving switch K2 is respectively equipped with K-1, K-2, K-3 shelves, driving switch K-1, K-2, K-3 respectively with wiring inserting column 5-14,5-9,5-6 UNICOM, the associated electrical components and parts are connected insertion associated connections inserting column 5 respectively, form different metering circuits.
Be provided with 1-27 wiring inserting column 5 on panel 6, wiring inserting column 5-23 is made as public binding post, wiring inserting column 5-24,5-25,5-26,5-27 are made as DC current wiring inserting column-A respectively, DC voltage wiring inserting column-V, alternating voltage wiring inserting column～V, and make measuring resistance wiring inserting column Ω.
Wiring inserting column 5-4 gauge outfit A1 forms between potentiometer Rm4 and the wiring inserting column 5-8 and regulates ammeter resistance.
Described driving switch K is made as resistance grade K-1 respectively, voltage gear K-2, current gear K-3.
Described electricity components and parts comprise resistance, electric capacity, diode, electric mortiser electronic component.
Panel 6 is a transparent plexiglass plate.
Gauge outfit A1 is the gauge outfit of 0～100 μ A, and ratio arms Ra ratio value is respectively 0.01,0.1,1,10,100.
Wiring inserting column 5 is designed to interior hollow, the copper binding post that outer nut is fastening.
Panel of the present utility model is made of organic glass, can directly see internal structure, has eliminated the mystique of commodity packaging.Designed a comprehensive circuit on the panel of experiment instrument, each node is provided with the good wiring inserting column of contact, has made many supporting electromagnetics components and parts simultaneously.As long as insert relevant binding post respectively relevant components and parts are housed on request, just can do respectively: the research of current-limiting circuit and bleeder circuit; Use resistance measurement with voltammetry; The research of diode characteristic; The mensuration of ammeter resistance; The stone electric bridge measuring resistance of DC current in the design and fabrication of multimeter; Low-resistance measurement; Tens experiments such as capacitance bridge and inductance bridge.Save instrument of experimental facilities input realization greatly and do at least 15 Experiments of Electromagnetism, convenient to operation, be that desirable electromagnetics is used experiment instrument more.
Below in conjunction with accompanying drawing the utility model is further specified:
Fig. 1 is each element of the utility model and wiring inserting column design plane synoptic diagram on panel.
Fig. 2 is the research circuit diagram of current-limiting circuit;
Fig. 3 is the research circuit diagram of bleeder circuit
Fig. 4 is resistance measurement with voltammetry (ammeter inner connection method) circuit diagram;
Fig. 5 is resistance measurement with voltammetry (external ammeter method) circuit diagram;
Fig. 6 is the research circuit diagram of diode characteristic;
Fig. 7 measures ammeter resistance (half deflection method) circuit diagram;
Fig. 8 measures ammeter resistance (replacement method) circuit diagram;
Fig. 9 is that the DC ammeter of multimeter expands the journey circuit diagram;
Figure 10 is that the D.C. voltmeter of multimeter expands the journey circuit diagram;
Figure 11 (A) is that the A.C. voltmeter of multimeter expands the journey circuit diagram; (B) electricity components and parts ABC connection diagram;
Figure 12 is multimeter resistance measuring circuit figure;
Figure 13 is a Wheatstone bridge measuring resistance circuit diagram;
Figure 14 (A) is the low-resistance measurement circuit diagram; (B) be to treat resistance R x and measuring resistance Rs connection figure in the low-resistance measurement;
Figure 15 is that capacitance bridge is surveyed condenser network figure;
Figure 16 is that inductance bridge is surveyed inductive circuit figure;
Among the figure, 1. gauge outfit A, 2. driving switch K, establish the K-1 resistance grade respectively, K-2 voltage gear, K-3 current gear, 3. ratio arms Ra, ratio is respectively 0.01,0.1,1,10,100,4. potentiometer Rm, 5. wiring inserting column, be provided with 27,6. panel is poly (methyl methacrylate) plate, and present embodiment is established two specification 75 * 35 * 5mm, 60 * 30 * 5mm.
Embodiment:
, realize doing 15 different experiments with regard to Experiments of Electromagnetism instrument of the utility model below in conjunction with accompanying drawing, the utility model is described in further detail:
Each components and parts and wiring inserting column 5 connect the design plane synoptic diagram on panel 6 as shown in Figure 1, panel 6 adopts organic transparency glass plate, on panel 6, be provided with 27 wiring inserting columns 5, wiring inserting column 5 is interior hollow, the copper binding post that outer nut is fastening, gauge outfit A1 is 0～100 μ A, driving switch K2 is divided into the K-1 resistance grade, the K-2 voltage gear, the K-3 current gear, ratio arms Ra3 ratio value is divided into 0.01,0.1,1,10,100, potentiometer Rm4 connects with gauge outfit A1 and forms ammeter resistance jointly, potentiometer Rm4 respectively with gauge outfit A1 and wiring inserting column 5-8 Chang Liantong, wiring inserting column 5-8 and wiring inserting column 5-5 Chang Liantong, wiring inserting column 5-4 respectively with the initial point Chang Liantong of gauge outfit A1 and driving switch K2, the resistance grade K-1 of driving switch and wiring inserting column 5-14, voltage gear K-2 and wiring inserting column 5-9, current gear K-3 and wiring inserting column 5-6 Chang Liantong, no matter reometer A1 makes direct current
Reometer, or D.C. voltmeter, all wiring inserting column 5-23 is made public binding post, be negative terminal, wiring inserting column 5-24 makes DC current wiring inserting column mark-A, wiring inserting column 5-25 makes DC voltage wiring inserting column mark work-V, wiring inserting column 5-26 makes alternating voltage wiring inserting column mark work～V, wiring inserting column 5-27 makes measuring resistance wiring inserting column mark and makes Ω, the electricity components and parts that use in the experimentation can be to be resistance, electric capacity according to making the different experiments needs, diode, one of electric pole etc. or the various combination between them.
In the research circuit diagram of Fig. 2 current-limiting circuit, driving switch K2 closes galvanization shelves K-3 shunt resistance R and inserts wiring inserting column 5-7 and 5-8, wiring inserting column 5-6 and 5-7 UNICOM and gauge outfit A1, potentiometer Rm4 forms reometer A jointly, pull-up resistor Rz inserts wiring inserting column 5-12 and 5-18, rheochord Ro inserts wiring inserting column 5-13 and 5-19, wiring inserting column 5-19,5-18 respectively with wiring inserting column 5-23,5-24 UNICOM, wiring inserting column 5-23 and 5-24 connect low-voltage dc power supply, and the resistance that changes rheochord Ro is straight, and the electric current in the circuit changes thereupon.
In the research circuit diagram of Fig. 3 bleeder circuit, driving switch K2 closes logical voltage gear K-2, divider resistance R inserts wiring inserting column 5-9 and 5-11 and gauge outfit A1, potentiometer Rm4 forms voltage table V jointly, pull-up resistor Rz inserts wiring inserting column 5-17,5-19, rheochord Ro wiring inserting column 5-2 (slide head), 5-3 and 5-1, wiring inserting column 5-2,5-11 UNICOM, wiring inserting column 5-1,5-3 connect low-voltage dc power supply, change the resistance between Ro wiring inserting column 5-2 and the 5-3, then the voltage at pull-up resistor Rz two ends changes thereupon.
In Fig. 4 voltammetry ammeter inner connection method measuring resistance circuit diagram, driving switch K2 closes logical voltage gear K-2, divider resistance R inserts wiring inserting column 5-9 and 5-11, form voltage table V jointly with gauge outfit A1, potentiometer Rm4, testing resistance Rx inserts wiring inserting column 5-17,5-19, reometer A (interior connection) inserts wiring inserting column 5-8,5-13 with multimeter DC current shelves, and low-voltage dc power supply wiring inserting column 5-23 and 5-25 mark-V can calculate testing resistance Rx according to the reading of gauge outfit 1 (voltage table) and reometer A.
At Fig. 5 voltammetry external ammeter method measuring resistance circuit diagram 5, driving switch K2 closes logical voltage gear K-2, divider resistance R inserts wiring inserting column 5-9 and 5-11, with gauge outfit A1, potentiometer Rm4 forms voltage table V jointly, and testing resistance Rx inserts wiring inserting column 5-17,5-19, and reometer A (method for externally) inserts wiring inserting column 5-17,5-21 with the multimeter zero frequency span, low-voltage dc power supply wiring inserting column 5-23,5-25 can calculate testing resistance Rx according to the reading of gauge outfit A1 (voltage table) and reometer A.
In the research circuit diagram of Fig. 6 diode characteristic, driving switch K2 closes logical voltage gear K-2, and divider resistance R2 inserts wiring inserting column 5-15,5-17 and gauge outfit A1, and potentiometer Rm4 forms voltage table V jointly, rheochord R inserts wiring inserting column 5-1,5-2 and 5-3 makes dividing potential drop usefulness, variable resistor R
1Insert wiring inserting column 5-6,5-7 makes current limliting and uses, variable resistor Ro inserts wiring inserting column 5-6,5-10, galvanometer G inserts wiring inserting column 5-11,5-12, diode to be measured inserts wiring inserting column 5-12,5-18, reometer A inserts wiring inserting column 5-7 with multimeter direct current mA shelves, 5-12, wiring inserting column 5-9 and 5-15 UNICOM, wiring inserting column 5-17,5-11, wiring inserting column 5-11,5-10 UNICOM, wiring inserting column 5-18,5-8 and 5-3 UNICOM, wiring inserting column 5-6,5-1 UNICOM, wiring inserting column 5-10,5-2 UNICOM, low-voltage dc power supply wiring inserting column 5-1, it is that different magnitudes of voltage (being the magnitude of voltage between the diode) are regulated R1 and R0 makes G be designated as zero that 5-3, change R make gauge outfit A1, at this moment the reading of reometer A is the electric current by diode, can make the I-V curve of diode according to the electric current and voltage value.
Measure in the ammeter resistance circuit at Fig. 7 half deflection method, driving switch K2 closes galvanization shelves K-3, wiring inserting column 5-6,5-7 and 5-24 mark-A UNICOM, wiring inserting column 5-8,5-23 UNICOM, low-tension supply inserts wiring inserting column 5-24,5-23, regulating supply voltage is increased gradually by 0 beginning, make gauge outfit A1 full scale, then resistance box R is inserted wiring inserting column 5-7,5-8 regulates resistance box R makes gauge outfit A1 pointer reduce to half partially by full scale, at this moment the resistance of resistance box is the gauge outfit resistance of (comprising Rm), if gauge outfit need be surveyed internal resistance in addition,, gauge outfit to be measured is inserted wiring inserting column 5-5 as long as K2 is closed logical voltage gear K-2,5-6 measures as stated above.
Measure in ammeter resistance (replacement method) circuit diagram at Fig. 8, driving switch K2 closes galvanization shelves K-3, milliammeter A multimeter milliampere shelves, insert wiring inserting column 5-12,5-18, resistance box R inserts and meets 5-7 and 5-8, wiring inserting column 5-18,5-24 UNICOM, wiring inserting column 5-8,5-23 UNICOM is as wiring inserting column 5-12, during 5-6 UNICOM, as wiring inserting column 5-24,5-23 connects low-tension supply, regulate its size, making milliammeter A is a certain fixed value (noticing that gauge outfit A1 does not surpass maximum range), then wiring inserting column 5-12,5-6 disconnects, and makes wiring inserting column 5-12,5-7 UNICOM, regulating resistance box R makes the milliammeter reading identical with the front, at this moment the resistance of resistance box is exactly gauge outfit A1, and the internal resistance of (resistance that comprises potentiometer Rm4) is the same if other gauge outfit need be surveyed the internal resistance connection.
Fig. 9 is that the DC ammeter of multimeter expands the journey circuit diagram, driving switch K2 closes galvanization shelves K-3, shunt resistance R inserts wiring inserting column 5-12,5-13, wiring inserting column 5-6,5-12,5-24 UNICOM, wiring inserting column 5-8,5-13,5-23 UNICOM, just formed the reometer that expands after the journey, it is with the value of R relevant to expand Cheng Daxiao.
Figure 10 is that the D.C. voltmeter of multimeter expands the journey map of current, driving switch K2 closes logical voltage gear K-2, divider resistance R inserts wiring inserting column 5-9,5-11, wiring inserting column 5-11,5-25 UNICOM, wiring inserting column 5-8,5-23 UNICOM, at this moment just formed the voltage table that expands after the journey, it is relevant with the value of R to expand Cheng Daxiao.
In Figure 11, A is that the A.C. voltmeter of multimeter expands the journey circuit diagram, and B electricity components and parts A, B, C johning knot composition, driving switch K2 close logical resistance grade K-1, two diodes and a protective resistance R
TForm a half-wave rectifying circuit, half-wave rectification R
T=Rs (Rs is an ammeter resistance), R
AndBe R
TIn parallel with Rs, diode is resistance R a forward, and A.C. voltmeter swamping resistance R inserts wiring inserting column 5-16,5-20, and its value is calculated by following formula: R
In=R+Rd+R
And, R
In=Umax/I～=Umax/2Io * 0.441 inserts wiring inserting column 5-4 to half-wave rectification element A, B inserts wiring inserting column 5-5, C inserts wiring inserting column 5-10, wiring inserting column 5-10,5-16 UNICOM, wiring inserting column 5-20,5-26 mark～V UNICOM, wiring inserting column 5-8,5-23 UNICOM, wiring inserting column 5-26,5-23 are exactly the A.C. voltmeter after the expansion journey.
In Figure 12 multimeter resistance measuring circuit figure, driving switch K2 closes logical resistance grade K-1, direct supply ε=1.5V wiring inserting column 5-14,5-27 mark Ω, wiring inserting column 5-14 is anodal, resistance R is a swamping resistance, insert wiring inserting column 5-13,5-19 shunt resistance Rs and insert wiring inserting column 5-6,5-7, center resistance Rk=U/2I, swamping resistance R=Rk-R
And(Rs//Rm ammeter resistance), wiring inserting column 5-4,5-6 UNICOM, wiring inserting column 5-7,5-8,5-13 UNICOM, wiring inserting column 5-19,5-23 UNICOM at this moment just can measuring resistances, and measurement range is relevant with swamping resistance R.
Wheatstone bridge measuring resistance circuit diagram in Figure 13, driving switch K2 closes logical resistance grade K-1, ratio arms Ra3-1 (being R2/R3), wiring inserting column 5-15, ratio arms Ra3-2 inserts wiring inserting column 5-6, ratio arms Ra3-3 wiring inserting column 5-10, relatively arm Ra inserts wiring inserting column 5-10,5-12, testing resistance Rx inserts wiring inserting column 5-6,5-7, galvanometer G inserts wiring inserting column 5-6,5-10, divider resistance (rheochord) Ro inserts wiring inserting column 5-1,5-2, R5-3, wiring inserting column 5-2 and 5-7 and 5-12 UNICOM, wiring inserting column 5-15,5-8,5-3 UNICOM, choose reasonable ratio arms Ra (being R2/R3) regulates R4 makes G be designated as zero, suitably improves wiring inserting column 5-2, voltage between the 5-3 (sensitivity), at this moment Rx=R2/R3 * R4.
A low-resistance measurement circuit diagram in Figure 14, B low-resistance measurement testing resistance Rx and measuring resistance R5 connect figure, driving switch K2 closes galvanization shelves K-3, shunt resistance R inserts wiring inserting column 5-7,5-8, wiring inserting column 5-6,5-7 UNICOM, at this moment wiring inserting column 5-7,5-8 promptly are the reometer A after the expansion journey, and current joint C4 inserts wiring inserting column 5-7, the P of resistance box R1
2Pin inserts wiring inserting column 5-12,5-18, the P of resistance box R2
3Pin inserts wiring inserting column 5-11,5-17, the P of resistance box R3
4Pin inserts wiring inserting column 5-10,5-16, the P of resistance box R4
1Pin inserts wiring inserting column 5-13,5-19, galvanometer inserts wiring inserting column 5-17,5-21, wiring inserting column 5-16,5-21,5-19 UNICOM, wiring inserting column 5-18,5-17 UNICOM, C2, C3 is the common current joint of rod to be measured and measuring resistance, wiring inserting column 5-13 with link away from the to be measured excellent terminal voltage joint of measuring resistance Rs, wiring inserting column 5-12 and rod to be measured and measuring resistance Rs link and hold the voltage jointer on the rod to be measured to link, wiring inserting column 5-11 links with the voltage jointer of the measuring resistance Rs that depends on an excellent side to be measured, wiring inserting column 5-10 with away from rod to be measured on one side the voltage jointer of measuring resistance Rs link, C1 is the current joint on the rod to be measured, positive source wiring inserting column 5-3, negative pole meets C1, and power supply will select the power supply of 1-2A, and current-limiting resistance Ro will note its watt level.If bridge balance and R4/R3=R1/R2, then Rx=R4/R3 * Rs.
In Figure 15, driving switch K2 closes logical resistance grade K-1, nulling device G exchanges the mA shelves with multimeter and inserts wiring inserting column 5-12,5-13, AC signal generator S 1000Hz, 15V inserts wiring inserting column 5-16,5-18, ratio arms Ra3-1 inserts wiring inserting column 5-18, ratio arms Ra3-2 inserts wiring inserting column 5-6, ratio arms Ra3-3 inserts wiring inserting column 5-12, ratio arms Ra3 ratio selects Ra=R4/R3=1/1, and standard capacitance box C2 inserts wiring inserting column 5-13,5-19, testing capacitance Cx insert wiring inserting column 5-7,5-8, resistance box R2 inserts wiring inserting column 5-18,5-19, testing resistance Rx inserts wiring inserting column 5-6,5-7 regulates C2, and R2 makes bridge balance, then Cx=R3/R4 * C2, Rx=R4/R3 * R2, tg δ=RxCxW=R
2C
2W.
In Figure 16, driving switch K2 closes logical resistance grade K-1, nulling device G exchanges shelves mA shelves with universal electric meter, insert wiring inserting column 5-12,5-8 (or wiring inserting column 5-13) AC signal generator S 1000Hz, 15V inserts wiring inserting column 5-16,5-18, ratio arms Ra3-1 inserts wiring inserting column 5-18, ratio arms Ra3-2 goes into wiring inserting column 5-6, ratio arms Ra3-3 goes into wiring inserting column 5-12, ratio arms Ra3 ratio selects Ra=R4/R3=1/1, and resistance box R ' inserts wiring inserting column 5-8,5-13, standard inductance L2 patch inserting column 5-13,5-19, resistance box R2 inserts wiring inserting column 5-18,5-19, inductance L x to be measured inserts wiring inserting column 5-7,5-8, testing resistance Rx (resistance that comprises Lx) insert wiring inserting column 5-6,5-7, Lx=R4/R3 * L2 during bridge balance, Rx=R4/R3 (R2+R '), Q=LxW/Rx=L2W/R2.
Claims (8)
1, a kind of electromagnetics is used experiment instrument more, comprise casing, panel on the casing (6), panel (6) is provided with gauge outfit A (1), shelves are lived K switch (2), ratio arms Ra (3), potentiometer Rm (4), it is characterized in that: on panel (6), be provided with if wiring inserting column (5), potentiometer Rm (4) and gauge outfit A (1), wiring inserting column (5-8) Chang Liantong, potentiometer Rm (4) and gauge outfit A (1) are composed in series ammeter resistance, wiring inserting column (5-8) and wiring inserting column (5-5) Chang Liantong, wiring inserting column (5-4) respectively with the initial point UNICOM of gauge outfit A (1) and driving switch K (2), described driving switch K (2) is respectively equipped with K-1, K-2, the K-3 shelves, driving switch K-1, K-2, K-3 respectively with wiring inserting column (5-14,5-9,5-6) UNICOM connects insertion associated connections inserting column (5) to the associated electrical components and parts respectively, forms different metering circuits.
2, electromagnetics according to claim 1 is many is characterized in that with experiment instrument: be provided with 1-27 wiring inserting column (5) on panel (6), wiring inserting column (5-23) is made as public binding post, wiring inserting column (5-24,5-25,5-26 5-27) is made as DC current wiring inserting column-A respectively, DC voltage wiring inserting column-V, alternating voltage wiring inserting column～V, and make measuring resistance wiring inserting column Ω.
3, electromagnetics according to claim 1 is used experiment instrument more, it is characterized in that: wiring inserting column (5-4) gauge outfit A (1), form between potentiometer Rm (4) and the wiring inserting column (5-8) and regulate ammeter resistance.
4, electromagnetics according to claim 1 and 2 is used experiment instrument more, it is characterized in that: described driving switch K is made as resistance grade K-1 respectively, voltage gear K-2, current gear K-3.
5, electromagnetics according to claim 1 and 2 is used experiment instrument more, it is characterized in that: described electricity components and parts comprise resistance, electric capacity, diode, electric mortiser electronic component.
6, electromagnetics according to claim 1 and 2 is used experiment instrument more, it is characterized in that: panel (6) is a transparent plexiglass plate.
7, electromagnetics according to claim 1 is used experiment instrument more, it is characterized in that: gauge outfit A (1) is the gauge outfit of 0～100 μ A, and ratio arms Ra ratio value is respectively 0.01,0.1,1,10,100.
8, use experiment instrument according to the described electromagnetics in one of claim 1 or 2 more, it is characterized in that: wiring inserting column (5) is designed to interior hollow, the copper binding post that outer nut is fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420069485 CN2791782Y (en) | 2004-12-16 | 2004-12-16 | Multi-purpose experiment instrument for electromagnetism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420069485 CN2791782Y (en) | 2004-12-16 | 2004-12-16 | Multi-purpose experiment instrument for electromagnetism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2791782Y true CN2791782Y (en) | 2006-06-28 |
Family
ID=36807840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420069485 Expired - Fee Related CN2791782Y (en) | 2004-12-16 | 2004-12-16 | Multi-purpose experiment instrument for electromagnetism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2791782Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079195B (en) * | 2007-06-22 | 2011-06-15 | 天津理工大学 | Multifunctional electromagnetic cannon demonstrator |
| CN103680271A (en) * | 2013-12-12 | 2014-03-26 | 深圳供电局有限公司 | Simulation direct current resistance tester |
| CN103852616A (en) * | 2012-11-30 | 2014-06-11 | 海洋王（东莞）照明科技有限公司 | Voltage testing module and testing device |
| CN105116193A (en) * | 2015-07-23 | 2015-12-02 | 安徽华东光电技术研究所 | Improved circuit for simulating measuring range of pointer meter |
| CN108958343A (en) * | 2018-07-09 | 2018-12-07 | 武汉瑞莱保能源技术有限公司 | A kind of device for simulating complex electromagnetic environment |
-
2004
- 2004-12-16 CN CN 200420069485 patent/CN2791782Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101079195B (en) * | 2007-06-22 | 2011-06-15 | 天津理工大学 | Multifunctional electromagnetic cannon demonstrator |
| CN103852616A (en) * | 2012-11-30 | 2014-06-11 | 海洋王（东莞）照明科技有限公司 | Voltage testing module and testing device |
| CN103680271A (en) * | 2013-12-12 | 2014-03-26 | 深圳供电局有限公司 | Simulation direct current resistance tester |
| CN103680271B (en) * | 2013-12-12 | 2016-02-03 | 深圳供电局有限公司 | Simulation direct current resistance tester |
| CN105116193A (en) * | 2015-07-23 | 2015-12-02 | 安徽华东光电技术研究所 | Improved circuit for simulating measuring range of pointer meter |
| CN108958343A (en) * | 2018-07-09 | 2018-12-07 | 武汉瑞莱保能源技术有限公司 | A kind of device for simulating complex electromagnetic environment |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |