CN201689578U - Teaching demonstration device for charge and discharge rules of capacitor - Google Patents
Teaching demonstration device for charge and discharge rules of capacitor Download PDFInfo
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- CN201689578U CN201689578U CN2009202427311U CN200920242731U CN201689578U CN 201689578 U CN201689578 U CN 201689578U CN 2009202427311 U CN2009202427311 U CN 2009202427311U CN 200920242731 U CN200920242731 U CN 200920242731U CN 201689578 U CN201689578 U CN 201689578U
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Abstract
The utility model discloses a teaching demonstration device for charge and discharge rules of a capacitor, which is characterized by comprising a direct current power supply E, a transfer switch S, a potentiometer W, a microampere demonstration amperemeter G, light-emitting diodes LED 1 and LED 2, the capacitor C and a demonstration voltmeter V. The demonstration device utilizes the deflection change of the amperemeter and the brightness change of the light-emitting diodes to display the change rules of charge and discharge current on the capacitor, and utilizes the deflection change of a voltmeter pointer to display the change rules of voltage between two poles of the capacitor. The demonstration device is used for teaching demonstration, and can directly change abstract concepts into visual intuitive phenomenon during the teaching of the charge process and the discharge process of the capacitor, thereby leading students to learn and understand easily.
Description
Technical field
The utility model relates to instruments used for education, is specifically related to capacitor charging/discharging law teaching demonstration device.
Background technology
The charge and discharge process of capacitor is the basic process of capacitor work, and in this change procedure, electric current in the circuit and voltage are the transient changing amounts, can not touch, can't see; For the ease of student's easily-learned easily mastered, adopt teaching aid ocular demonstration to help teaching at teaching process, can become visual in image process to abstract concept.
The utility model content
Problem to be solved in the utility model is at above-mentioned technical deficiency, how a kind of capacitor charging/discharging law teaching demonstration device is provided, this demonstration device utilizes the galvanometer changes in deflection, the bright dark change of light emitting diode shows charging or discharging current Changing Pattern on the capacitor, utilizes the voltage table needle deflection to change and shows capacitor two interpolar change in voltage rules.Charge and discharge in the process teaching at capacitor, use this utility model to carry out teaching demonstration, can directly become visual in image phenomenon to abstract concept, student's easily-learned easily mastered.
The technical matters that the utility model proposed is to solve like this: construct a kind of capacitor charging/discharging law teaching demonstration device, it is characterized in that: comprise direct supply (E), switch (S), potentiometer (W), microampere demonstration galvanometer (G), first light emitting diode (LED1), second light emitting diode (LED2), capacitor (C) and demonstration voltage table (V), direct supply (E) is anodal to be connected with switch (S) charging terminal (1), and negative pole end, the voltage table negative pole end of switch (S) discharge terminal (2) and direct supply (E) are connected.
According to capacitor charging/discharging law teaching demonstration device provided by the utility model, it is characterized in that: microampere demonstration galvanometer (G) and resistor (R) are connected in parallel; Demonstration voltage table (V) and capacitor (C) are connected in parallel.
According to capacitor charging/discharging law teaching demonstration device provided by the utility model, it is characterized in that: the moving contact end of switch (S) is connected with potentiometer (W) end, the positive pole of direct supply (E) links to each other with switch (S) charging terminal (1), and direct supply (E) negative pole is connected with switch (S) discharge terminal (2), capacitor (C) negative pole.
According to capacitor charging/discharging law teaching demonstration device provided by the utility model, it is characterized in that: first light emitting diode (LED1) is anodal, the continuous back of the negative pole end of second light emitting diode (LED2) is in series with microampere demonstration galvanometer (G) end is connected, and the continuous back of the positive pole of first light emitting diode (LED1) negative pole, second light emitting diode (LED2) is connected with the positive terminal of capacitor (C).
Description of drawings
Accompanying drawing 1 is a circuit structure diagram of the present utility model.
Accompanying drawing 2 is demonstration galvanometer synoptic diagram of the present utility model.
Accompanying drawing 3 is demonstration voltage table synoptic diagram of the present utility model.
Accompanying drawing 4 is shape assumption diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, when switch S places moment of a set, direct supply E charges to capacitor C.The flow direction of its electric current is: flow out from the positive pole of direct supply E, flow back to the negative pole of power supply through switch S, potentiometer W, galvanometer G, first LED 1 and capacitor C, charging current is maximum at the beginning, put to maximum position on the galvanometer G pointer right side, first LED 1 is the brightest, and the voltage table pointer increases gradually by zero; Along with the duration of charging increases, charging current reduces gradually, and ammeter pointer is to left avertence, first LED 1 deepening gradually, and the voltage table pointer that is connected in parallel on capacitor C two ends is gradually to right avertence, and indicated number increases gradually; Last charging current is almost nil, first LED 1 complete deepening, and the indicated number of voltage table reaches maximal value, the electromotive force of power supply E no better than, second LED 2 do not work in the whole charging process.
When switch S places position " 2 ", be that capacitor C externally carries out discharge process.Its current direction is: electric current flows back to the negative pole of capacitor C through the positive pole of capacitor C, second LED 2, galvanometer G, potentiometer W, switch S.The discharge current direction is opposite with the charging current direction, discharge begins moment, the electric current maximum, galvanometer G pointer is biased to maximum left, second LED 2 is the brightest, voltage table pointed maximal value, along with increase discharge time, the voltage table index reduces gradually, the pointer of galvanometer G is to right avertence, reading reduces, second LED 2 deepening gradually, and the index of last galvanometer G is almost nil, second LED 2 extinguishes fully, the voltage table index is almost nil, and discharge finishes, and first LED 1 of whole discharge process do not work.
" 1 ", " 2 ", " 3 ", " 4 ", " 5 " and " 6 " are outer terminals in the accompanying drawing 4.During teaching demonstration, " 1 " is connected " 1 " and " 2 " binding post on the accompanying drawing 4 respectively with " 2 " binding post on accompanying drawing 2 galvanometer."+", "-" binding post connect " 3 " on the accompanying drawing 4, " 4 " binding post respectively on accompanying drawing 3 voltage tables.Power on " just " of container C of " 5 " and " 6 " binding post and accompanying drawing 1 is connected with " bearing " end utmost point on the accompanying drawing 4.In accompanying drawing 4 casings, " 3 " link to each other with " 6 " with " 5 ", " 4 ".The two ends of resistor R link to each other with " 1 ", " 2 " binding post on the accompanying drawing 4 respectively on the accompanying drawing 1; LED 1 positive pole is connected with the negative pole of LED2 and " 2 " binding post of accompanying drawing 4, and LED 1 negative pole is connected with the positive pole of LED2 and " 3 " binding post of accompanying drawing 4.S is the single-pole double-throw (SPDT) switch on the accompanying drawing 1, " 1 " binding post on the potentiometer W one termination accompanying drawing 4, the other end connects the moving contact end of single-pole double-throw (SPDT) switch, the positive pole of direct supply E connects switch S charging terminal (1), and power supply E negative pole is connected with " 6 " binding post on switch S discharge terminal (2), the accompanying drawing 4.
Component parameter: R selects the metal film resistor of 1/2W, 100 Ω for use, and W selects the carbon-film potentiometer of 10K Ω for use; Direct supply E selects No. 2 battery series connection of 3 joints for use; LED1 selects φ 5 red light emitting diodes for use, and LED2 selects φ 5 green LEDs for use; Capacitor C capacity is selected the 1uF-1000uF scope for use.
The utility model also can be made various alternatives, more than by embodiment by accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4 illustrated embodiments, be that foregoing of the present utility model is described in further detail, but this should be interpreted as that the scope of the theme that the utility model is above-mentioned only limits to described example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements and change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.
Claims (4)
1. capacitor charging/discharging law teaching demonstration device, it is characterized in that: comprise direct supply (E), switch (S), potentiometer (W), microampere demonstration galvanometer (G), first light emitting diode (LED1), second light emitting diode (LED2), capacitor (C) and demonstration voltage table (V), direct supply (E) is anodal to be connected with switch (S) charging terminal (1), and negative pole end, the voltage table negative pole end of switch (S) discharge terminal (2) and direct supply (E) are connected.
2. capacitor charging/discharging law teaching demonstration device according to claim 1 is characterized in that: microampere demonstration galvanometer (G) and resistor (R) are connected in parallel; Demonstration voltage table (V) and capacitor (C) are connected in parallel.
3. capacitor charging/discharging law teaching demonstration device according to claim 1, it is characterized in that: the moving contact end of switch (S) is connected with potentiometer (W) end, the positive pole of direct supply (E) links to each other with switch (S) charging terminal (1), and direct supply (E) negative pole is connected with switch (S) discharge terminal (2), capacitor (C) negative pole.
4. capacitor charging/discharging law teaching demonstration device according to claim 1, it is characterized in that: first light emitting diode (LED1) is anodal, the continuous back of the negative pole end of second light emitting diode (LED2) is in series with microampere demonstration galvanometer (G) end is connected, and the continuous back of the positive pole of first light emitting diode (LED1) negative pole, second light emitting diode (LED2) is connected with the positive terminal of capacitor (C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202427311U CN201689578U (en) | 2009-10-26 | 2009-10-26 | Teaching demonstration device for charge and discharge rules of capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202427311U CN201689578U (en) | 2009-10-26 | 2009-10-26 | Teaching demonstration device for charge and discharge rules of capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201689578U true CN201689578U (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202427311U Expired - Fee Related CN201689578U (en) | 2009-10-26 | 2009-10-26 | Teaching demonstration device for charge and discharge rules of capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201689578U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248211A (en) * | 2012-02-13 | 2013-08-14 | 李艳 | Current-inhibiting charge-discharge circuit of filter capacitor |
| 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 |
-
2009
- 2009-10-26 CN CN2009202427311U patent/CN201689578U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248211A (en) * | 2012-02-13 | 2013-08-14 | 李艳 | Current-inhibiting charge-discharge circuit of filter capacitor |
| 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 |
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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: 20101229 Termination date: 20111026 |