CN202549137U - Demonstrating teaching tool for charging and discharging of capacitor - Google Patents
Demonstrating teaching tool for charging and discharging of capacitor Download PDFInfo
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- CN202549137U CN202549137U CN201220228061XU CN201220228061U CN202549137U CN 202549137 U CN202549137 U CN 202549137U CN 201220228061X U CN201220228061X U CN 201220228061XU CN 201220228061 U CN201220228061 U CN 201220228061U CN 202549137 U CN202549137 U CN 202549137U
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- capacitor
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- discharging
- teaching tool
- demonstrating
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Abstract
The utility model discloses a demonstrating teaching tool for charging and discharging of a capacitor. The demonstrating teaching tool comprises a power supply (E), a double-throw switch (S) and a capacitor (C) which are serially connected, wherein end points (1, 2) of the double-throw switch (S) are respectively connected with anode and cathode of the power supply (E), and two light emitting diodes (LED1, LED2) in reverse parallel connection are serially connected with the capacitor (C). The whole charging and discharging process of the capacitor is demonstrated by utilizing the unilateral conduction illuminating feature of the LED by the demonstrating teaching tool provided by the utility model; the demonstrating effect is obvious; students can conveniently know the charging and discharging working principle of the capacitor; and the demonstrating teaching tool is light, convenient and portable.
Description
Technical field
The utility model relates to a kind of physical teaching aid, relates in particular to a kind of capacitor charging/discharging demonstration teaching aid.
Background technology
The basic role of capacitor is charging and discharge, and the function of directly utilizing this charging and discharge is one of main application of capacitor.Say the electrolysis condenser course of work on the classroom, more abstract, in order to let the student better understand capacitor charge and discharge principle, the process of the observation capacitor charge and discharge of image, the teacher demonstrates whole charging and discharging process with reometer usually.But the beat of pointer of reometer is very fast, is difficult for observation and not portable.
Summary of the invention
The purpose of the utility model provides a kind of capacitor charging/discharging teaching aid that is easy to carry and demonstrates.
The technical scheme of the utility model comprises power supply E, double throw switch S and the capacitor C of series connection successively, and the end points 1,2 of double throw switch S connects the both positive and negative polarity of power supply respectively, and the light emitting diode LED1 of two reverse parallel connections, LED2 connect with described capacitor C.
The light emitting diode LED1 of described reverse parallel connection, LED2 series limiting resistor R.
The utility model utilizes light emitting diode unilateal conduction emitting characteristics, has demonstrated the whole process of capacitor charge and discharge, and the demonstration effect is obvious, is convenient to the principle of work of students understand capacitor charge and discharge, and this demonstration teaching aid, and is very light and handy, be easy to carry.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the circuit diagram of the utility model.
E, power supply among Fig. 1, S, switch, C, capacitor, LED1, LED2, light emitting diode, R, resistance.
Embodiment
According to shown in Figure 1, LED 1, the LED2 of two reverse parallel connections connect with capacitor C, and when switch S connection 1, behind the energized E, capacitor C is in charged state, and this moment, LED 1 forward was connected luminous.In the capacitor C charging process, LED 1 deepening is gradually accomplished when the capacitor C charging, and LED 1 is no longer luminous.Whole charging process demonstration finishes.
After charging was accomplished, switch S was broken off 1 and is connected 2, and capacitor C is in discharge condition, and this moment, LED 2 forwards were connected luminous.In the capacitor C discharge process, LED 2 deepening is gradually accomplished when the capacitor C discharge, and LED 2 is no longer luminous.Whole discharge process demonstration finishes.
Among Fig. 1 in light emitting diode LED1, the LED2 of the reverse parallel connection resistance R of connecting.Resistance R is the discharge current-limiting resistance, and is not breakdown with the protection light emitting diode.
The preferred 6V direct supply of embodiment among Fig. 1, the capacitor of 500pf.
The utility model utilizes the unilateal conduction principle of luminosity of light emitting diode, has fully demonstrated the charge and discharge process of capacitor.
Claims (2)
1. capacitor charging/discharging demonstration teaching aid; The power supply (E), double throw switch (S) and the electric capacity (C) that comprise series connection successively; It is characterized in that: the end points of double throw switch (S) (1,2) connects the both positive and negative polarity of power supply (E) respectively, and the light emitting diode of two reverse parallel connections (LED1, LED2) is connected with described electric capacity (C).
2. capacitor charging/discharging demonstration teaching aid according to claim 1 is characterized in that: the light emitting diode of described reverse parallel connection (LED1, LED2) series limiting resistor (R).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220228061XU CN202549137U (en) | 2012-05-10 | 2012-05-10 | Demonstrating teaching tool for charging and discharging of capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220228061XU CN202549137U (en) | 2012-05-10 | 2012-05-10 | Demonstrating teaching tool for charging and discharging of capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202549137U true CN202549137U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220228061XU Expired - Fee Related CN202549137U (en) | 2012-05-10 | 2012-05-10 | Demonstrating teaching tool for charging and discharging of capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202549137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139734A (en) * | 2015-09-29 | 2015-12-09 | 广西职业技术学院 | Capacitor charging/discharging demonstration circuit |
-
2012
- 2012-05-10 CN CN201220228061XU patent/CN202549137U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139734A (en) * | 2015-09-29 | 2015-12-09 | 广西职业技术学院 | Capacitor charging/discharging demonstration circuit |
| CN105139734B (en) * | 2015-09-29 | 2017-12-01 | 广西职业技术学院 | A kind of capacitor for charging and discharging demonstration circuit |
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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: 20121121 Termination date: 20130510 |