CN207731524U - A kind of external ammeter method and ammeter inner connection method contrast experiment's platform - Google Patents
A kind of external ammeter method and ammeter inner connection method contrast experiment's platform Download PDFInfo
- Publication number
- CN207731524U CN207731524U CN201721173419.2U CN201721173419U CN207731524U CN 207731524 U CN207731524 U CN 207731524U CN 201721173419 U CN201721173419 U CN 201721173419U CN 207731524 U CN207731524 U CN 207731524U
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- China
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- ammeter
- resistance
- backboard
- voltmeter
- connecting terminal
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Abstract
The utility model is related to a kind of external ammeter methods and ammeter inner connection method contrast experiment's platform, base plate rear end installs vertical backboard, it is embedded in ammeter and voltmeter in backboard upper end, ammeter connects the connecting terminal being arranged on backboard below the two with the terminals of voltmeter, the resistance of multiple and different resistance values is set on the backboard, it is provided with the connecting terminal being separately connected with resistance both ends on backboard below each resistance, the input terminal for the touch screen unit being arranged on backboard connects the output end of ammeter and voltmeter, and connecting terminal is provided with below the power supply being arranged on backboard.In the utility model, student can get information about the difference of external ammeter method and ammeter inner connection method, and tempered manipulative ability during the experiment and can carry out extension study by touch screen unit.
Description
Technical field
The utility model is related to Ohm's law demonstration equipment field, especially a kind of external ammeter method and ammeter inner connection
Method contrast experiment's platform.
Background technology
Ohm's law is the important content in electricity, the relationship of electric current by conductor, voltage is elaborated, in practical electricity
There are two types of connection method when road connects, one is voltmeter it is in parallel with a resistor after series electrical flow table again, another kind be ammeter with
Shunt voltage table, the first external ammeter, the electric current that the internal resistance of voltmeter makes ammeter measure become larger again after resistance series connection, the
Two kinds of ammeter inner connections, due to the internal resistance of ammeter make voltmeter measure voltage become larger, thereby produce measure resistance value or
The problem of person becomes smaller or becomes larger.Teacher often carries the components such as ammeter, voltmeter, resistance to classroom, so in field research
It is demonstrated after line afterwards, since the component of carrying is more, using upper very inconvenient.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide ammeter, voltmeter, resistance, switch
With Touch Screen together with and can showing ammeter inscribed methods and method for externally difference a kind of external ammeter method and ammeter
Inscribed methods contrast experiment's platform.
The technical scheme adopted by the utility model is that：
A kind of external ammeter method and ammeter inner connection method contrast experiment's platform, it is characterised in that：Including bottom plate, backboard, electricity
Flow table, voltmeter, resistance and touch screen unit, base plate rear end install vertical backboard, and ammeter and electricity are embedded in backboard upper end
Table, ammeter is pressed to connect the connecting terminal being arranged on backboard below the two with the terminals of voltmeter, setting is more on the backboard
The resistance of a difference resistance value is provided with the connecting terminal being separately connected with resistance both ends, backboard on the backboard below each resistance
The input terminal of the touch screen unit of upper setting connects the output end of ammeter and voltmeter, is arranged below the power supply being arranged on backboard
There is connecting terminal.
Moreover, being provided with lamps and lanterns and switch on the backboard, lamps and lanterns and switch lower section are both provided with connecting terminal.
Moreover, the resistance is three, the resistance value of a resistance is less than the internal resistance of voltmeter, and the resistance value of another resistance is big
In the internal resistance of ammeter, the resistance value of third resistance is between voltmeter internal resistance and amperemeter inner resistance.
Moreover, the power supply is to export adjustable power supply.
Moreover, the ammeter is digital electronic ammeter, voltmeter is digital voltmeter.
The advantages of the utility model and good effect are：
In the utility model, there are three resistance, switch, a lamps and lanterns, the electricity of different resistance values for setting on backboard
Flow table, a voltmeter, a touch screen unit and a power supply, each equipment are both provided with connecting terminal, and student is using
When can according to touch screen unit prompt content voluntarily connect each connecting terminal, then ammeter and voltmeter output numerical value
After being transported to touch screen module, external ammeter method and electricity can be got information about by functions, students such as its realization calculating, displays
The difference of flow table inscribed methods, and tempered manipulative ability during the experiment and can have been extended through touch screen unit
Study, is a kind of demonstration or experiment effect is good, the experimental bench more than easy to operate and function.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
With reference to embodiment, following embodiments, which are illustrative, are not limited is further illustrated to the utility model
, the scope of protection of the utility model cannot be limited with following embodiments.
A kind of external ammeter method and ammeter inner connection method contrast experiment's platform, as shown in Figure 1, the innovation of the utility model exists
In：Including bottom plate 11, backboard 1, ammeter 2, voltmeter 6, resistance 4 and touch screen unit 8, base plate rear end installs the vertical back of the body
Plate is embedded in ammeter and voltmeter in the backboard upper left corner, and ammeter is connected with the terminals of voltmeter and set on backboard below the two
The current wiring terminal 3 and voltage wiring terminal 7 set, are arranged the resistance of multiple and different resistance values on backboard, below each resistance
The resistor wiring terminal 5 being separately connected with resistance both ends, the input terminal for the touch screen unit being arranged on backboard are provided on backboard
The output end of ammeter and voltmeter is connected, 9 lower section of power supply being arranged on backboard is provided with power supply terminal 10.
In the present embodiment, there is central processing unit, input terminal can connect ammeter and voltmeter in touch screen unit
Output, this has connected cable in advance, is attached when without testing.It is provided with lamps and lanterns 15 and switch 13 on backboard, lamps and lanterns and opens
It closes lower section and is respectively provided with corresponding light wiring terminal 14 and switch terminal 12.
Resistance is three, and the resistance value of a resistance is far smaller than the internal resistance of voltmeter, is tested for external ammeter method；Separately
The resistance value of one resistance is far longer than the internal resistance of ammeter, is tested for ammeter inner connection method；The resistance value of third resistance between
Between voltmeter internal resistance and amperemeter inner resistance.
Power supply is the adjustable power supply of output, such as：The power lights of included slide rheostat voltage adjusting end.Ammeter is number electricity
Flow table, voltmeter are digital voltmeter, and the two measures accurately, can individually export the data of measurement.
In touch screen unit have memory module, can prestore external ammeter, external ammeter method correlation
The contents such as computational methods and material, the examination question of extension study.
In the utility model, there are three resistance, switch, a lamps and lanterns, the electricity of different resistance values for setting on backboard
Flow table, a voltmeter, a touch screen unit and a power supply, each equipment are both provided with connecting terminal, and student is using
When can according to touch screen unit prompt content voluntarily connect each connecting terminal, then ammeter and voltmeter output numerical value
After being transported to touch screen module, external ammeter method and electricity can be got information about by functions, students such as its realization calculating, displays
The difference of flow table inscribed methods, and tempered manipulative ability during the experiment and can have been extended through touch screen unit
Study, is a kind of demonstration or experiment effect is good, the experimental bench more than easy to operate and function.
Claims (3)
1. a kind of external ammeter method and ammeter inner connection method contrast experiment's platform, it is characterised in that：Including bottom plate, backboard, electric current
Table, voltmeter, resistance and touch screen unit, base plate rear end install vertical backboard, and ammeter and voltage are embedded in backboard upper end
The terminals of table, ammeter and voltmeter intercept the connecting terminal being arranged on backboard below the two, are arranged on the backboard multiple
The resistance of different resistance values, is provided with the connecting terminal being separately connected with resistance both ends on the backboard below each resistance, on backboard
The input terminal of the touch screen unit of setting connects the output end of ammeter and voltmeter, is provided with below the power supply being arranged on backboard
Connecting terminal；
Lamps and lanterns and switch are provided on the backboard, lamps and lanterns and switch lower section are both provided with connecting terminal；
The ammeter is digital electronic ammeter, and voltmeter is digital voltmeter.
2. a kind of external ammeter method according to claim 1 and ammeter inner connection method contrast experiment's platform, it is characterised in that：
The resistance is three, and the resistance value of a resistance is less than the internal resistance of voltmeter, and the resistance value of another resistance is more than the interior of ammeter
Resistance, the resistance value of third resistance is between voltmeter internal resistance and amperemeter inner resistance.
3. a kind of external ammeter method according to claim 1 or 2 and ammeter inner connection method contrast experiment's platform, feature exist
In：The power supply is to export adjustable power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721173419.2U CN207731524U (en) | 2017-09-14 | 2017-09-14 | A kind of external ammeter method and ammeter inner connection method contrast experiment's platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721173419.2U CN207731524U (en) | 2017-09-14 | 2017-09-14 | A kind of external ammeter method and ammeter inner connection method contrast experiment's platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207731524U true CN207731524U (en) | 2018-08-14 |
Family
ID=63090411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721173419.2U Expired - Fee Related CN207731524U (en) | 2017-09-14 | 2017-09-14 | A kind of external ammeter method and ammeter inner connection method contrast experiment's platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207731524U (en) |
-
2017
- 2017-09-14 CN CN201721173419.2U patent/CN207731524U/en not_active Expired - Fee Related
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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: 20180814 Termination date: 20190914 |