CN202855157U - Photoelectric complementary joule heat demonstration instrument - Google Patents
Photoelectric complementary joule heat demonstration instrument Download PDFInfo
- Publication number
- CN202855157U CN202855157U CN 201220512825 CN201220512825U CN202855157U CN 202855157 U CN202855157 U CN 202855157U CN 201220512825 CN201220512825 CN 201220512825 CN 201220512825 U CN201220512825 U CN 201220512825U CN 202855157 U CN202855157 U CN 202855157U
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- CN
- China
- Prior art keywords
- transparent plastic
- photoelectric
- joule heat
- bead
- shaped pipe
- 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
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Abstract
The utility model provides a photoelectric complementary joule heat demonstration instrument which is specially designed and manufactured for student experiments and teacher demonstration experiments in middle school physics. The instrument comprises three small transparent plastic bottles (A, B and C) and three transparent plastic U-shaped pipes (A, B and C), wherein the lower ends of the three transparent plastic U-shaped pipes are all respectively provided with a pressure sealing communication balance switch and a matching rubber cap, and the bottom of each pipe is equipped with a red water column of same mass. Seven red photoelectric beads and three green photoelectric beads, which are completely identical, are arranged in the three totally identical small transparent plastic bottles (A, B and C) as required. A power switch K is closed to allow voltage at two ends of each photoelectric bead and current of each photoelectric bead filament to be identical, so a service life is prolonged, and it is ensured that joule heat generated by each photoelectric bead at any time is identical. The instrument provided by the utility model has the advantages of saving of time and electricity, great visibility, visualness and capacity of qualitatively and quantitatively verifying the Joule's law that Q is equal to I<2>RT.
Description
One, technical field
The utility model is a kind ofly to make for student experimenting and the design of teacher's lecture experiment specially.
Two, background technology
Because traditional lecture experiment is to use the kerosene expanded by heating, solve lecture experiment and the student experimenting of middle school physical experiment " Joule law ", not only complex structure, complex operation, the time-consuming electricity that takes, and it is not directly perceived, visibility is minimum, also exists environmental pollution and potential safety hazard.For breaking through the Focal point and difficult point in the physical experiment teaching in middle schools, I design and produce a kind of: light-electricity complementary Joule heat demonstrator is verified " Joule law ".
Three, summary of the invention
Purpose of the present invention exactly will to teachers and students provide a kind of safety, environmental protection, directly perceived, visibility is large, the power saving that saves time, and can qualitatively illustrate, can quantitatively demonstrate again the demonstrator of " Joule law ".
Goal of the invention of the present utility model is achieved in that " light-electricity complementary Joule heat demonstrator ", and it is by 3 transparent plastic bottles (A, B, C), 3 U-shaped pipes of transparent plastic (A, B, C), all fill envelope in its lower end and pressing the connection balance cock, and be furnished with corresponding rubber cap, the red water column of quality such as is equipped with in its bottom.7 of identical red light small electric bulbs are heating pilot lamp and 3 shuntings of green light small electric bulb pilot lamp, and it is inner to be installed on request respectively identical three transparent plastic bottles (A, B, C), wherein 1 red light small electric bulb in the bottle A; 2 red light small electric bulb series connection in the bottle B; 4 red light small electric bulbs in the bottle C, string is connected in parallel again in twos first.3 green light small electric bulb series connection are in parallel with bottle A and bottle B again, consist of the shunting pilot lamp.Closed electrical source switch K makes each photoelectricity pearl both end voltage all identical with the electric current that passes through each photoelectricity pearl filament, improves serviceable life, guarantees that the Joule heat of each photoelectricity pearl generation is identical at any time.Namely observe the number of luminescence lamp in the bottle, i.e. " Joule heat ".Use the utility model power saving that not only saves time, visibility is large, and is directly perceived, and can be qualitative, and quantitative verification " Joule law " is Q=I
2RT.
Description of drawings
Accompanying drawing 1 is circuit diagram of the present utility model
Accompanying drawing 2 is the synoptic diagram that partly cuts open of the present utility model
Four, embodiment
In the accompanying drawing 1, will require to be fixedly mounted in the position of regulation with electric device in the circuit diagram 1.
Green shunting pilot lamp (4), power switch (2) and index dial (12) in the accompanying drawing 2, are installed respectively at demonstration case (11) outside surface; Transparent plastic jar (3) (A, B, C) is housed respectively in demonstration case (11); The U-shaped pipe of transparent plastic (5) bottom is installed with envelope presses connection balance cock (6) and is furnished with corresponding rubber cap (9), the red water column (10) of quality is housed in the U-shaped pipe of transparent plastic (5) bottom etc., it is inner that rubber stopper (7) is inserted in the lower end of transparent U-shaped pipe (5), then pass two wires and red light small electric bulb (8) welds at rubber stopper (7), it is inner each rubber stopper (7) all to be inserted transparent plastic bottle (3) (A, B, C) again.Transparent plastic bottle (3) (A, B, C) is inner the quality air (13) such as to be equipped with, inner 1,2,4 the red light small electric bulbs (8) that are equipped with respectively of transparent plastic bottle (3) (A, B, C), demonstration case (11) bottom is installed with the power supply (1) of DC60V.
Claims (2)
1. a light-electricity complementary Joule heat demonstrator is by demonstration case (11), green shunting pilot lamp (4), and red light small electric bulb (8), the U-shaped pipe of transparent plastic (5), power switch (2) and index dial (12) form.It is characterized in that: transparent plastic jar (3) (A, B, C) is housed respectively in demonstration case (11); The U-shaped pipe of transparent plastic (5) bottom is equipped with envelope presses connection balance cock (6) and is furnished with corresponding rubber cap (9), the red water column (10) of quality is housed in the U-shaped pipe of transparent plastic (5) bottom etc., it is inner that rubber stopper (7) is inserted in the lower end of transparent U-shaped pipe (5), then pass two wires and red light small electric bulb (8) welds at rubber stopper (7), it is inner each rubber stopper (7) all to be inserted transparent plastic bottle (3) (A, B, C) again.
2. light-electricity complementary Joule heat demonstrator according to claim 1, it is characterized in that: transparent plastic bottle (3) (A, B, C) is inner the quality air (13) such as to be equipped with, transparent plastic bottle (3) (A, B, C), (1,2,4) red light small electric bulb (8) is housed respectively, demonstration case (11), bottom are installed with the power supply (1) of DC60V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220512825 CN202855157U (en) | 2012-09-25 | 2012-09-25 | Photoelectric complementary joule heat demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220512825 CN202855157U (en) | 2012-09-25 | 2012-09-25 | Photoelectric complementary joule heat demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202855157U true CN202855157U (en) | 2013-04-03 |
Family
ID=47986328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220512825 Expired - Fee Related CN202855157U (en) | 2012-09-25 | 2012-09-25 | Photoelectric complementary joule heat demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202855157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110660300A (en) * | 2019-11-12 | 2020-01-07 | 苏红 | Joule's law experiment demonstration instrument and experiment method |
-
2012
- 2012-09-25 CN CN 201220512825 patent/CN202855157U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110660300A (en) * | 2019-11-12 | 2020-01-07 | 苏红 | Joule's law experiment demonstration instrument and experiment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20130925 |