CN203773819U - Teaching demonstration instrument for demonstrating influence of capacitance and inductance on current - Google Patents
Teaching demonstration instrument for demonstrating influence of capacitance and inductance on current Download PDFInfo
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- CN203773819U CN203773819U CN201420148429.0U CN201420148429U CN203773819U CN 203773819 U CN203773819 U CN 203773819U CN 201420148429 U CN201420148429 U CN 201420148429U CN 203773819 U CN203773819 U CN 203773819U
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Abstract
The utility model discloses a teaching demonstration instrument for demonstrating the influence of capacitance and inductance on current. The demonstration instrument comprises a demonstration board, an alternating current source and a storage battery. The demonstration board is fixedly provided with a single-pole double-throw switch; the output current of the alternating current source is connected with a first positive pin and a first negative pin; and the demonstration board is fixedly provided with an inductance access branch and a capacitance access branch, wherein the two ends of the inductance access branch and the two ends of the capacitance access branch are respectively connected to a positive power line and a negative power line and the inductance access branch and the capacitance access branch are mutually in parallel connection. The teaching demonstration instrument in the utility model has the advantages that the number of class instruments carried by a teacher can be reduced; it is not necessary to spend a lot of time to built a demonstration circuit on site, thereby saving time in class; the demonstration instrument is capable of demonstrating the different influences of capacitance, inductance and resistance on alternating current and direct current in a comparison manner, and is capable of demonstrating the influence of the capacitance and the inductance on the alternating current with different frequencies, thereby enabling teacher and students to be interacted to explore and demonstrate relevant factors influencing the capacitor capacitance and the inductor inductance; and meanwhile, the demonstration effect is obvious and visual.
Description
Technical field
The utility model discloses a kind of physical teaching aid, specifically refer to a kind of electric capacity and the inductance demonstration instrument for teaching that affects on electric current.
Background technology
In existing senior middle school physics teaching, teacher is in order to set forth the logical interchange of electric capacity, the characteristic of resistance direct current, and set forth the perfectly straight stream of inductance, the characteristic that resistance exchanges, need to set up the on-the-spot demonstration of imparting knowledge to students of many demonstration equipments simultaneously, thereby need to carry a large amount of experiment equipments while causing class-teaching of teacher, not only carry inconvenience, and at time in classroom, circuit is built also and expended time in very much, affected teaching efficiency.Meanwhile, when existing teaching material experiment necessary accessories cannot be demonstrated ac frequency change, the characteristic of the characteristic of the logical high frequency of electric capacity, resistance low frequency and the logical low frequency of inductance, resistance high frequency, also cannot demonstrate the correlative factor that affects capacitive reactance capacitor, inductor induction reactance.
Summary of the invention
The purpose of this utility model is the shortcoming and defect existing in order to overcome prior art, and provide a kind of, can integral type carry out electric capacity and the lecture experiment of inductance on the impact of electric current, flexible to operation, display effect is electric capacity and the affect demonstration instrument for teaching of inductance on electric current intuitively.
For achieving the above object, the technical solution of the utility model is to include demonstration board, alternate current-changing source and accumulator, on described demonstration board, be fixedly installed single-pole double-throw switch (SPDT), this single-pole double-throw switch (SPDT) comprises the positive pin of switch, switch is born pin, the first positive pin, the first negative pin, the second positive pin and the second negative pin, the output current of described alternate current-changing source respectively with the first positive pin, the first negative pin is connected, the both positive and negative polarity of described accumulator is connected with the second negative pin with the second positive pin respectively, on described demonstration board, be fixedly installed the negative power line that positive power line that one end is connected with the positive pin of switch and one end are connected with the negative pin of switch, on described demonstration board, be fixedly installed two ends and be connected to respectively positive power line and negative power line and inductance access leg and electric capacity access leg parallel with one another, on described inductance access leg, be disposed with inductance the first binding post, inductance the second binding post, and LED lamp pearl (W1) and switch (K1), on described electric capacity access leg, be disposed with electric capacity the first binding post, electric capacity the second binding post, and LED lamp pearl (W2) and switch (K2), described inductance the first binding post, detachable access demonstration inductance between inductance the second binding post, described electric capacity the first binding post, electric capacity the second binding post detachably accesses demonstration electric capacity.
By this setting, by for demonstrating electric capacity and inductance to the integrated demonstration board that is arranged in of the main devices of current affects, therefore, when teacher carries out lecture experiment without carrying again a large amount of experiment equipments at random, and teacher is when demonstration, also without expending a lot of time, each equipment is built.In addition, this middle inductance access leg is set and electric capacity access leg parallel with one another, student can observe simultaneously and compare inductance and the similarities and differences of electric capacity to current affects at school time, teaching demonstration is effective.
Further arranging is to be fixedly installed the LED display being useful on described demonstration board, and the exchange current input of described alternate current-changing source is connected to display drive circuit, and this display drive circuit drives controls the frequency that LED display shows exchange current.By this setting, can on demonstration board, directly show the frequency of exchange current, student is when observing demonstrative process, can, directly by observing the frequency of LED display and the light and shade of each paths of LEDs lamp pearl, just can understand very intuitively electric capacity and the impact of inductance on high and low frequency exchange current.
Further arrange be described electric capacity by two movably sheet metal form, between two sheet metals, be provided with dismountable insulating medium.By this setting, can change two sheet metals that form electric capacity over against area, distance between plates from the insulating medium between, plate, the impact on alternating current when demonstrating capacitance variations.
Further arranging is that described inductance is provided with slidably bar magnet, on bar magnet, be provided with can coiling coil, can change the number of turn of coiling and slip bar magnet to change coefficient of self-induction, the impact on alternating current while changing to demonstrate inductance.
Further arrange is to be also provided with resistance access leg between described positive power line and negative power line, on described resistance access leg, be disposed with resistance the first binding post, resistance the second binding post and LED lamp pearl (W3) and switch (K3), described resistance the first binding post, resistance the second binding post detachably access demonstration resistance.By this setting, can also contrast demonstration resistance, electric capacity, inductance to alternating current and galvanic Different Effects.
The utility model has the advantages that: the device amount of carrying of attending class that can simplify teacher, and build illustrative circuitry without cost plenty of time scene, save the class period, can contrast demonstrate electric capacity, inductance, resistance to alternating current, galvanic Different Effects, can demonstrate electric capacity, the impact of inductance on different frequency alternating current, can support to probe into the correlative factor that affects capacitive reactance capacitor, inductor induction reactance, demonstrate remarkable directly perceived, the handling safety of effect simultaneously.
Below in conjunction with specification drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 the utility model is specifically implemented structural representation.
Embodiment
Below by embodiment, the utility model is specifically described, only for the utility model is further described, can not be interpreted as the restriction to the utility model protection domain.
This enforcement embodiment as shown in Figure 1, include demonstration board 1, alternate current-changing source 2 and accumulator 3, alternate current-changing source 2 described in the present embodiment preferably adopts commercially available low frequency generator, in addition, accumulator 3 adopts more piece dry cell to be in series, on described demonstration board 1, be fixedly installed single-pole double-throw switch (SPDT) 4, this single-pole double-throw switch (SPDT) 4 comprises the positive pin 41 of switch, switch is born pin 42, the first positive pin 43, the first negative pin 44, the second positive pin 45 and the second negative pin 46, the output current of described alternate current-changing source 2 respectively with the first positive pin 43, the first negative pin 44 is connected, the both positive and negative polarity of described accumulator 3 is connected with the second negative pin 46 with the second positive pin 45 respectively, on described demonstration board 1, be fixedly installed the negative power line 6 that positive power line 5 that one end is connected with the positive pin 41 of switch and one end are connected with the negative pin 42 of switch, on described demonstration board 1, be fixedly installed two ends and be connected to respectively positive power line 5 and negative power line 6 and inductance access leg 7 and electric capacity access leg 8 parallel with one another, on described inductance access leg 7, be disposed with inductance the first binding post 71, inductance the second binding post 72, and LED lamp pearl W1) and K switch 1, on described electric capacity access leg 8, be disposed with electric capacity the first binding post 81, electric capacity the second binding post 82, and LED lamp pearl W2 and K switch 2, detachable access demonstration inductance 73 between described inductance the first binding post 71 and inductance the second binding post 72, described electric capacity the first binding post 81, the detachable access demonstration of electric capacity the second binding post 82 electric capacity 83, described demonstration inductance 73 and demonstration electric capacity 83 be chosen as homemade changeable inductance and electric capacity.
In addition, on demonstration board 1 described in the present embodiment, be fixedly installed the LED display 11 being useful on, the exchange current input of described alternate current-changing source 2 is connected to display drive circuit 12, and this display drive circuit 12 drives controls the frequency that LED display 11 shows exchange current.
In addition, between positive power line 5 described in the present embodiment and negative power line 6, be also provided with resistance access leg 9, on described resistance access leg 9, be disposed with resistance the first binding post 91, resistance the second binding post 92 and LED lamp pearl W3 and K switch 3, described resistance the first binding post 91, the detachable access demonstration of resistance the second binding post 92 resistance 93.
Claims (5)
1. an electric capacity and the affect demonstration instrument for teaching of inductance on electric current, it is characterized in that: include demonstration board, alternate current-changing source and accumulator, on described demonstration board, be fixedly installed double-point double-throw switch, this double-point double-throw switch comprises the positive pin of switch, switch is born pin, the first positive pin, the first negative pin, the second positive pin and the second negative pin, the output current of described alternate current-changing source respectively with the first positive pin, the first negative pin is connected, the both positive and negative polarity of described accumulator is connected with the second negative pin with the second positive pin respectively, on described demonstration board, be fixedly installed the negative power line that positive power line that one end is connected with the positive pin of switch and one end are connected with the negative pin of switch, on described demonstration board, be fixedly installed two ends and be connected to respectively positive power line and negative power line and inductance access leg and electric capacity access leg and resistance access leg parallel with one another, on described inductance access leg, be disposed with inductance the first binding post, inductance the second binding post, and LED lamp pearl (W1) and switch (K1), on described electric capacity access leg, be disposed with electric capacity the first binding post, electric capacity the second binding post, and LED lamp pearl (W2) and switch (K2), described inductance the first binding post, detachable access demonstration inductance between inductance the second binding post, described electric capacity the first binding post, electric capacity the second binding post detachably accesses demonstration electric capacity.
2. electric capacity according to claim 1 and the inductance demonstration instrument for teaching that affects on electric current, it is characterized in that: on described demonstration board, be fixedly installed LED display, the exchange current input of described alternate current-changing source is connected to display drive circuit, and this display drive circuit drives controls the frequency that LED display shows exchange current.
3. electric capacity according to claim 1 and the inductance demonstration instrument for teaching that affects on electric current, it is characterized in that: between described positive power line and negative power line, be also provided with resistance access leg, on described resistance access leg, be disposed with resistance the first binding post, resistance the second binding post and LED lamp pearl (W3) and switch (K3), described resistance the first binding post, resistance the second binding post detachably access demonstration resistance.
4. electric capacity according to claim 1 and the inductance demonstration instrument for teaching that affects on electric current, is characterized in that: described electric capacity by two movably sheet metal form, between two sheet metals, be provided with dismountable insulating medium.
5. electric capacity according to claim 1 and the inductance demonstration instrument for teaching that affects on electric current, is characterized in that: described inductance is provided with slidably bar magnet, on bar magnet, be provided with can coiling coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148429.0U CN203773819U (en) | 2014-03-28 | 2014-03-28 | Teaching demonstration instrument for demonstrating influence of capacitance and inductance on current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148429.0U CN203773819U (en) | 2014-03-28 | 2014-03-28 | Teaching demonstration instrument for demonstrating influence of capacitance and inductance on current |
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| Publication Number | Publication Date |
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| CN203773819U true CN203773819U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420148429.0U Expired - Fee Related CN203773819U (en) | 2014-03-28 | 2014-03-28 | Teaching demonstration instrument for demonstrating influence of capacitance and inductance on current |
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| CN (1) | CN203773819U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282209A (en) * | 2014-10-24 | 2015-01-14 | 吴筱枝 | Electricity demonstration teaching tool |
| CN105654822A (en) * | 2016-03-07 | 2016-06-08 | 纪选民 | Experimental demonstration instrument and demonstration method for exploring influence of inductors and capacitors on currents |
| CN106710387A (en) * | 2015-11-17 | 2017-05-24 | 重庆尊来科技有限责任公司 | Teaching demonstration instrument capable of being made by oneself |
| CN106781904A (en) * | 2015-11-22 | 2017-05-31 | 重庆尊来科技有限责任公司 | The education demonstrator that a kind of integrated form sizing is indicated |
| CN106781905A (en) * | 2015-11-23 | 2017-05-31 | 重庆尊来科技有限责任公司 | A kind of balanced type holds formula demonstration instrument for teaching |
| CN106816068A (en) * | 2015-11-29 | 2017-06-09 | 重庆尊来科技有限责任公司 | A kind of capacitive reactance tester of non-gate |
| CN106898208A (en) * | 2015-12-18 | 2017-06-27 | 重庆尊来科技有限责任公司 | Atypical multi resonant source formula frequency viewer |
| CN106920440A (en) * | 2015-12-24 | 2017-07-04 | 重庆尊来科技有限责任公司 | Four vibration scientific popular instruments |
| CN109559608A (en) * | 2017-09-27 | 2019-04-02 | 天津中德应用技术大学 | Instructional device and experimental method based on resonance device in electromagnetic coupling transmission |
| CN110619790A (en) * | 2018-06-18 | 2019-12-27 | 合肥探奥自动化有限公司 | Self-induction science popularization demonstration device |
-
2014
- 2014-03-28 CN CN201420148429.0U patent/CN203773819U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282209A (en) * | 2014-10-24 | 2015-01-14 | 吴筱枝 | Electricity demonstration teaching tool |
| CN106710387A (en) * | 2015-11-17 | 2017-05-24 | 重庆尊来科技有限责任公司 | Teaching demonstration instrument capable of being made by oneself |
| CN106781904A (en) * | 2015-11-22 | 2017-05-31 | 重庆尊来科技有限责任公司 | The education demonstrator that a kind of integrated form sizing is indicated |
| CN106781905A (en) * | 2015-11-23 | 2017-05-31 | 重庆尊来科技有限责任公司 | A kind of balanced type holds formula demonstration instrument for teaching |
| CN106816068A (en) * | 2015-11-29 | 2017-06-09 | 重庆尊来科技有限责任公司 | A kind of capacitive reactance tester of non-gate |
| CN106898208A (en) * | 2015-12-18 | 2017-06-27 | 重庆尊来科技有限责任公司 | Atypical multi resonant source formula frequency viewer |
| CN106920440A (en) * | 2015-12-24 | 2017-07-04 | 重庆尊来科技有限责任公司 | Four vibration scientific popular instruments |
| CN105654822A (en) * | 2016-03-07 | 2016-06-08 | 纪选民 | Experimental demonstration instrument and demonstration method for exploring influence of inductors and capacitors on currents |
| CN105654822B (en) * | 2016-03-07 | 2019-01-01 | 纪选民 | A kind of inquiry experiment demonstrator and demenstration method that inductor and capacitor influence electric current |
| CN109559608A (en) * | 2017-09-27 | 2019-04-02 | 天津中德应用技术大学 | Instructional device and experimental method based on resonance device in electromagnetic coupling transmission |
| CN110619790A (en) * | 2018-06-18 | 2019-12-27 | 合肥探奥自动化有限公司 | Self-induction science popularization demonstration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20150328 |
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| EXPY | Termination of patent right or utility model |