CN209417996U - A kind of Physical Experiment drum-type electro tentiometer teaching aid - Google Patents
A kind of Physical Experiment drum-type electro tentiometer teaching aid Download PDFInfo
- Publication number
- CN209417996U CN209417996U CN201820935568.6U CN201820935568U CN209417996U CN 209417996 U CN209417996 U CN 209417996U CN 201820935568 U CN201820935568 U CN 201820935568U CN 209417996 U CN209417996 U CN 209417996U
- Authority
- CN
- China
- Prior art keywords
- copper ring
- connecting terminal
- resistance wire
- roller
- tentiometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002474 experimental method Methods 0.000 title claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 239000000523 sample Substances 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 210000004027 cell Anatomy 0.000 description 3
- 210000004899 c-terminal region Anatomy 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides a kind of Physical Experiment drum-type electro tentiometer teaching aid, including support device and measuring device, measuring device include roller and axis, and cylindrical outer is wound with resistance wire, and the winding direction along resistance wire is equipped with scale；The both ends of roller are equipped with A connecting terminal and B connecting terminal, axis is equipped with A copper ring and B copper ring, A copper ring connects carbon brush, B copper ring connects carbon brush, carbon brush is connect by A conducting wire with resistance wire beginning, carbon brush is connect by B conducting wire with resistance wire end, and the A connecting terminal is connect by C conducting wire with A copper ring, and the B connecting terminal is connect by D conducting wire with B copper ring；Support device is in electrical contact equipped with that can realize along the probe assembly that roller radially slides, probe assembly with resistance wire, and probe assembly is connected with C connecting terminal.Have simple in sturcture, ingenious in design；The features such as size is small, occupies little space, easy to operate, saves the spending of instruction cost, and measurement result is more accurate.
Description
Technical field
The utility model relates to physical teaching aid technical fields more particularly to a kind of Physical Experiment drum-type electro tentiometer to teach
Tool and its application method.
Background technique
DC potentiometer is the fine instrument that electromotive force of source is measured with penalty method and comparison method.It can not only be used
Come precise measurement electromotive force, voltage, electric current and resistance etc., may further be used to calibration precision electrical meter, non electrical quantity measuring instrument and
In automatic measurement and control system, using also very extensive.
Teaching is commonly 11 potential difference meters at present, and there are many drawbacks in use, and such as: size is larger, needs to account for
According to larger experiment porch, copper binding post up to 11, there are certain resistance values for binding post itself, cause measurement result to exist and miss
Difference；Binding post is more, troublesome in poeration, needs repeatedly to attempt just find suitable equalization point, is not easy to understand the original of experiment
Reason；Teaching aid can be stirred often similar to seven-stringed plucked instrument in some ways similar to the zither, classmates, be easy to cause the damage of instrument and the reduction of measuring accuracy；Wire
It is not calculated in total length around the length of binding post, causes measurement length relatively low, the electromotive force finally measured is inaccurate.
It is current ability so how to provide a kind of Physical Experiment drum-type electro tentiometer teaching aid and its application method
Field technique personnel technical problem urgently to be resolved.
Utility model content
In view of this, the present invention provides a kind of Physical Experiment drum-type electro tentiometer teaching aids and its user
Method solves defect existing in the prior art, and concrete scheme is as follows:
The utility model is claimed a kind of Physical Experiment drum-type electro tentiometer teaching aid, including support device and
Measuring device, the measuring device include roller 30 and axis 21, and the roller 30 has been externally wrapped with resistance wire 31, along the electricity
The winding direction for hindering silk 31 is equipped with scale 32；The both ends of the roller 30 are equipped with A connecting terminal 50 and B connecting terminal 51, institute
That states axis 21 is equipped with A copper ring 211 and B copper ring 212, and the A copper ring 211 connects A carbon brush 213, and the B copper ring 212 connects
B carbon brush 214 is connect, the A carbon brush 213 is connect by A conducting wire 60 with resistance wire beginning 310, and the B carbon brush 214 passes through B conducting wire
61 connect with resistance wire end 311, and the A connecting terminal 50 is connect by C conducting wire 62 with the A copper ring 211, the B wiring
Terminal 51 is connect by D conducting wire 63 with the B copper ring 212；The support device is equipped with can be radial sliding along the roller 30
Dynamic probe assembly, the probe assembly can be realized in electrical contact with the resistance wire, and the probe assembly is connected with C terminals
Son 52.
Specifically, the roller 30 uses transparent material, light source 70 is additionally provided on the axis 21, the light source 70 is preferably
For LED light source.
Specifically, the support device includes pedestal 10 and the lateral bolster fagging 20 that 10 both ends of pedestal are arranged in,
The lateral bolster fagging 20 is mounted on the both ends of the axis 21, and the probe assembly passes through the cunning that 10 side of pedestal is arranged in
Rail 11 realizes sliding axially along the roller 30.
Specifically, the probe assembly includes the sliding block 40 being arranged on the sliding rail 11, and with the sliding block 40 according to
The support rod 41 and metal contact piece 42 of secondary connection, the metal contact piece are directly contacted with the resistance wire 31.
Specifically, the length of the scale 32 is 800mm-1100mm, preferably 1100mm.
The utility model compared with prior art, has the advantage, that and uses between resistance wire and binding post on roller
Carbon brush connection, it is simple in sturcture, ingenious in design；Size is small, occupies little space, in a limited space in can be with multiple groups classmate simultaneously
It is tested；Binding post only has 3, therefore measurement result precision is higher；It is easy to operate, only idler wheel need to be started turning from one end,
One stroke can find equalization point, be easy to understand simultaneously；Be conducive to protect teaching aid, save the spending of instruction cost；Measured value
The actual (tube) length angle value of as wire keeps measurement result more accurate；Inside increases illumination LED, is more clear scale value easily
It reads.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or required attached drawing is briefly described in description of the prior art, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the utility model side schematic view；
Fig. 3 is the utility model schematic diagram of internal structure；
Fig. 4 is the utility model circuit connection diagram；
Fig. 5 is scale expanded schematic diagram；
In figure: 10, pedestal 11, sliding rail 12, limiting device 20, lateral bolster fagging 21, axis 210, insulator 211, A
Copper ring 212, B copper ring 213, carbon brush A 214, carbon brush B 30, roller 31, resistance wire 310, resistance wire beginning 311, resistance
Silk end 32, scale 33, rotation hand wheel 40, sliding block 41, support rod 42, metal contact piece 50, A connecting terminal 51, B connect
Line terminals 52, C connecting terminal 60, A conducting wire 61, B conducting wire 62, C conducting wire 63, D conducting wire 70, light source.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 is the overall structure diagram of the utility model, and Fig. 2 is the utility model side schematic view, and Fig. 3 is this reality
With novel internal structure schematic diagram, Fig. 4 is the utility model circuit connection diagram, and Fig. 5 is scale expanded schematic diagram, referring to figure
Shown in 1- Fig. 5, the utility model is claimed a kind of Physical Experiment drum-type electro tentiometer teaching aid, including support device, with
And measuring device, the measuring device include roller 30 and axis 21, the roller 30 has been externally wrapped with resistance wire 31, along institute
The winding direction for stating resistance wire 31 is equipped with scale 32；The both ends of the roller 30 are equipped with A connecting terminal 50 and B connecting terminal
51, the axis 21 is equipped with A copper ring 211 and B copper ring 212, and the A copper ring 211 connects A carbon brush 213, the B copper ring
212 connection B carbon brush 214, the A carbon brush 213 are connect by A conducting wire 60 with resistance wire beginning 310, and the B carbon brush 214 passes through B
Conducting wire 61 is connect with resistance wire end 311, and the A connecting terminal 50 is connect by C conducting wire 62 with the A copper ring 211, the B
Connecting terminal 51 is connect by D conducting wire 63 with the B copper ring 212；The support device is equipped with can be along 30 diameter of roller
To the probe assembly of sliding, the probe assembly can be realized in electrical contact with the resistance wire, and the probe assembly is connected with C and connects
Line terminals 52.
Specifically, the roller 30 uses transparent material, light source 70 is additionally provided on the axis 21, the light source 70 is preferably
For LED light source.
Specifically, the support device includes pedestal 10 and the lateral bolster fagging 20 that 10 both ends of pedestal are arranged in,
The lateral bolster fagging 20 is mounted on the both ends of the axis 21, and the probe assembly passes through the cunning that 10 side of pedestal is arranged in
Rail 11 realizes sliding axially along the roller 30.
Specifically, the probe assembly includes the sliding block 40 being arranged on the sliding rail 11, and with the sliding block 40 according to
The support rod 41 and metal contact piece 42 of secondary connection, the metal contact piece are directly contacted with the resistance wire 31.
Specifically, the length of the scale 32 is 800mm-1100mm, preferably 1100mm.
A kind of circuit connecting mode based on above-mentioned apparatus is also claimed in the utility model, specifically, the A wiring
Terminal 50 is connected with power supply E anode, the B connecting terminal 51 and telegraph key K1Connection, in the telegraph key K1Between the power supply E
Equipped with rheostat R0, the A connecting terminal also connect with current detector G, and the current detector G connection is tested power supply EXOr normal cell
E0, the tested power supply EXOr normal cell E0Telegraph key K can be passed through2With 52 connection of C connecting terminal.
A kind of potential difference calculating based on Physical Experiment drum-type electro tentiometer teaching aid is also claimed in the utility model
Method includes the following steps:
S1: connecting test circuit；
S2: telegraph key K2With tested power supply EXConnection；
S3: telegraph key K is connected1；
S4: rotating cylinder handwheel 33 makes metal contact piece 42 continuously slip over resistance wire 30；
S5: the throw of pointer situation of observation galvanometer G, until its pointer points to " 0 " graduation mark, stop rotating roller handwheel
33；
S6: the scale value of 42 place scale of metal contact piece, 32 position, then, E are recordedx=I0r0Lx；
S7: by telegraph key K2With normal cell E0Connection repeats S4-S6 step, records 42 place scale 32 of metal contact piece
The scale value L of position0, then E0=I0r0L0Wherein r0For the resistance in resistance wire unit length, I0For the work for flowing through resistance wire
Electric current；
S8: by above-mentioned two formulas Ex=I0r0LxAnd E0=I0r0L0After being divided by, power supply E to be measured can be obtainedXElectromotive force:
Above formula shows electromotive force of source E to be measuredX, available standards battery E0Electromotive force and potential difference meter be in compensating coefficient
Under the L that measuresxAnd L0Value determines.
Preferably, the E of the normal cell0Electromotive force is 1.0186V.
The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (6)
1. a kind of Physical Experiment drum-type electro tentiometer teaching aid, it is characterised in that: including support device and measuring device,
The measuring device includes roller (30) and axis (21),
The roller (30) has been externally wrapped with resistance wire (31), and the winding direction along the resistance wire (31) is equipped with scale (32)；
The both ends of the roller (30) are equipped with A connecting terminal (50) and B connecting terminal (51),
The axis (21) is equipped with A copper ring (211) and B copper ring (212), and the A copper ring (211) connects carbon brush (213), institute
B copper ring (212) connection carbon brush (214) is stated, the carbon brush (213) is connect by A conducting wire (60) with resistance wire beginning (310), institute
Carbon brush (214) are stated to connect by B conducting wire (61) with resistance wire end (311),
The A connecting terminal (50) is connect by C conducting wire (62) with the A copper ring (211), and the B connecting terminal (51) passes through D
Conducting wire (63) is connect with the B copper ring (212)；
The support device be equipped with can along the probe assembly that the roller (30) radially slide, the probe assembly with it is described
Resistance wire can be realized in electrical contact, and the probe assembly is connected with C connecting terminal (52).
2. a kind of Physical Experiment according to claim 1 drum-type electro tentiometer teaching aid, it is characterised in that: the roller
(30) transparent material is used, is additionally provided with light source (70) on the axis (21).
3. a kind of Physical Experiment according to claim 1 drum-type electro tentiometer teaching aid, it is characterised in that: the support
Device includes the lateral bolster fagging (20) of pedestal (10) and setting at the pedestal (10) both ends, the lateral bolster fagging (20)
The both ends of the axis (21) are mounted on, sliding rail (11) of the probe assembly by setting in the pedestal (10) side realizes edge
Roller (30) slide axially.
4. a kind of Physical Experiment according to claim 3 drum-type electro tentiometer teaching aid, it is characterised in that: the probe
Component include sliding block (40) on the sliding rail (11) is set, and with the sliding block (40) sequentially connected support rod (41)
With metal contact piece (42), the metal contact piece is directly contacted with the resistance wire (31).
5. a kind of Physical Experiment according to claim 1-4 drum-type electro tentiometer teaching aid, it is characterised in that:
The length of the scale (32) is 800mm-1100mm.
6. a kind of Physical Experiment according to claim 5 drum-type electro tentiometer teaching aid, which is characterized in that the E of battery0
Electromotive force is 1.0186V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820935568.6U CN209417996U (en) | 2018-06-17 | 2018-06-17 | A kind of Physical Experiment drum-type electro tentiometer teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820935568.6U CN209417996U (en) | 2018-06-17 | 2018-06-17 | A kind of Physical Experiment drum-type electro tentiometer teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209417996U true CN209417996U (en) | 2019-09-20 |
Family
ID=67929719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820935568.6U Expired - Fee Related CN209417996U (en) | 2018-06-17 | 2018-06-17 | A kind of Physical Experiment drum-type electro tentiometer teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209417996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510856A (en) * | 2018-06-17 | 2018-09-07 | 承德石油高等专科学校 | A kind of Physical Experiment drum-type electro tentiometer teaching aid and its application method |
-
2018
- 2018-06-17 CN CN201820935568.6U patent/CN209417996U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108510856A (en) * | 2018-06-17 | 2018-09-07 | 承德石油高等专科学校 | A kind of Physical Experiment drum-type electro tentiometer teaching aid and its application method |
| CN108510856B (en) * | 2018-06-17 | 2023-11-24 | 承德石油高等专科学校 | Drum-type potentiometer teaching aid for physical experiment and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107356800A (en) | The high-current detector and method of a kind of magnetic field cancellation | |
| CN205333740U (en) | Direct -current resistance tester | |
| JP6125650B2 (en) | Hot stick power analyzer | |
| CN201311488Y (en) | Check meter of arrester leakage current and action recorder | |
| CN205844410U (en) | Conductor is carried out the portable test arrangement of D.C. resistance detection | |
| CN208818818U (en) | A kind of low-power consumption program control type current mutual inductor field detecting device | |
| CN105223536B (en) | A kind of portable electric meter field calibration system | |
| CN105891757A (en) | Open-loop Hall sensor measurement accuracy verification device and verification method thereof | |
| CN109085211A (en) | A kind of aggrieved area's detection method in toilet | |
| CN209417996U (en) | A kind of Physical Experiment drum-type electro tentiometer teaching aid | |
| CN108981823B (en) | Multi-parameter integrated sensor for monitoring generator armature winding | |
| CN208720383U (en) | Toilet | |
| CN108510856A (en) | A kind of Physical Experiment drum-type electro tentiometer teaching aid and its application method | |
| CN108398586A (en) | A kind of omnipotent meter apparatus of electric power overhaul | |
| CN202522689U (en) | Magnetic induction intensity measuring device based on Hall effect | |
| CN103941201A (en) | Magnetic parameter measuring method for magnetic material | |
| CN115060960A (en) | Passive non-contact direct current detection device | |
| CN114296007A (en) | Method for measuring POE power supply parameters on line | |
| CN101140251A (en) | Device for testing conductive polymer compound material temperature-resistance characteristic | |
| CN209148864U (en) | A kind of safety integrated tester calibrating installation | |
| CN2591577Y (en) | Automatic correcting temperature and salinity sensor | |
| CN102608549B (en) | Measuring device and method of Hall effect based magnetic induction density | |
| CN206038177U (en) | Three -way formula platinum resistance PT100 temperature measuring system | |
| CN201666922U (en) | High-voltage nuclear phase pen | |
| CN203881921U (en) | Magnetic parameter measuring device for magnetic material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190920 |