CN203838936U - Capacitor charging and discharging demonstration device - Google Patents
Capacitor charging and discharging demonstration device Download PDFInfo
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- CN203838936U CN203838936U CN201420271611.5U CN201420271611U CN203838936U CN 203838936 U CN203838936 U CN 203838936U CN 201420271611 U CN201420271611 U CN 201420271611U CN 203838936 U CN203838936 U CN 203838936U
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Abstract
The utility model discloses a capacitor charging and discharging demonstration device which is characterized in that the capacitor charging and discharging demonstration device is formed by an integrated circuit, a first resistor, a second resistor, a third resistor, a fourth resistor, a capacitor, an adjustable resistor, a switch, light-emitting diodes from the first light-emitting diode to the tenth light-emitting diode and a DC power source. The capacitor charging and discharging demonstration device is reasonable in design, simple in structure and convenient to operate. According to the capacitor charging and discharging demonstration device, the light-emitting diodes are utilized to form light beams to simulate capacitor charging and discharging in a high-low manner, so that vivid and visual object teaching is realized, and it is convenient for students to understand and grasp capacitor charging and discharging.
Description
Technical field
The utility model relates to a kind of physical teaching aid, is specifically related to a kind of capacitance charging-discharging demonstrator.
Background technology
In physics teaching, for the charge and discharge process of electric capacity, be one of more indigestible problem of student, teacher narrates difficulty to reach image, object teaching, is not easy to student and understands, grasps.At present, not yet there is the capacitor charge and discharge process apparatus for demonstrating of teaching use to come out.
Summary of the invention
The purpose of this utility model is exactly the defect existing for prior art, and a kind of capacitance charging-discharging demonstrator is provided.
Its technical scheme is: capacitance charging-discharging demonstrator, by integrated circuit, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, electric capacity, adjustable resistance, switch and the first to the tenth light emitting diode and direct supply form, one end of the positive pole of described direct supply and the first resistance, the first quiet end of switch, 3 pin of integrated circuit and 9 pin of integrated circuit are connected, the positive pole of the other end of the first resistance and the first light emitting diode, the positive pole of the second light emitting diode, the positive pole of the 3rd light emitting diode, the positive pole of the 4th light emitting diode, the positive pole of the 5th light emitting diode, the positive pole of the 6th light emitting diode, the positive pole of the 7th light emitting diode, the positive pole of the 8th light emitting diode, the positive pole anodal and the tenth light emitting diode of the 9th light emitting diode is connected, the negative pole of the first light emitting diode is connected with 1 pin of integrated circuit, the negative pole of the second light emitting diode is connected with 18 pin of integrated circuit, the negative pole of the 3rd light emitting diode is connected with 17 pin of integrated circuit, the negative pole of the 4th light emitting diode is connected with 16 pin of integrated circuit, the negative pole of the 5th light emitting diode is connected with 15 pin of integrated circuit, the negative pole of the 6th light emitting diode is connected with 14 pin of integrated circuit, the negative pole of the 7th light emitting diode is connected with 13 pin of integrated circuit, the negative pole of the 8th light emitting diode is connected with 12 pin of integrated circuit, the negative pole of the 9th light emitting diode is connected with 11 pin of integrated circuit, the negative pole of the tenth light emitting diode is connected with 10 pin of integrated circuit, the moved end of described switch is connected with 5 pin of integrated circuit and the positive pole of electric capacity by adjustable resistance and the 4th resistance, 6 pin of integrated circuit are connected with one end of 7 pin of integrated circuit and the second resistance, the other end of the second resistance is connected with one end of the 3rd resistance and 8 pin of integrated circuit, the 3rd quiet end of the negative pole of described direct supply and switch, the other end of the 3rd resistance, the negative pole of electric capacity, 4 pin of integrated circuit and 2 pin of integrated circuit are connected, and the second quiet end of described switch is unsettled.
Wherein, described direct supply is accumulator or D.C. regulated power supply, and the voltage between its positive pole and its negative pole is 6-12V.Described switch is that cutter three formulas of throwing are turned round sub-switch or push-pull switch.The model of described integrated circuit is LM3914.Described electric capacity be 220-470Uf, it is withstand voltage is more than or equal to 25V.The resistance of described the first resistance is 470-820 Ω, and its power is greater than 2W.Described the second resistance equates with the resistance of the 3rd resistance, is 1.5-3K Ω.The resistance of described the 4th resistance is 1-2K Ω.The resistance of described adjustable resistance is 10-51K Ω.
The utility model compared with prior art, has the advantages such as reasonable in design, simple in structure, easy to operate.It forms light beam height mode artificial capacitor by light emitting diode and discharges and recharges, thereby reaches image, object teaching, is convenient to student and understands, grasps.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1, a kind of capacitance charging-discharging demonstrator, the integrated circuit (IC) that is LM3914 by model, resistance is the first resistance R 1 that 470 Ω power are greater than 2W, resistance is the second resistance R 2 of 1.5K Ω, resistance is the 3rd resistance R 3 of 1.5K Ω, resistance is the 4th resistance R 4 of 1K Ω, 220-470Uf is withstand voltage is more than or equal to the capacitor C of 25V, resistance is the adjustable resistance W of 10K Ω, one cutter three formulas of throwing are stirred K switch and first to the tenth light emitting diode L1-L10 and the direct supply composition of type, the anodal V+ of described direct supply and one end of the first resistance R 1, the first quiet end of K switch, 3 pin of integrated circuit (IC) and 9 pin of integrated circuit (IC) are connected, the positive pole of the other end of the first resistance R 1 and the first light emitting diode L1, the positive pole of the second light emitting diode L2, the positive pole of the 3rd light emitting diode L3, the positive pole of the 4th light emitting diode L4, the positive pole of the 5th light emitting diode L5, the positive pole of the 6th light emitting diode L6, the positive pole of the 7th light emitting diode L7, the positive pole of the 8th light emitting diode L8, the positive pole anodal and the tenth light emitting diode L10 of the 9th light emitting diode L9 is connected, the negative pole of the first light emitting diode L1 is connected with 1 pin of integrated circuit (IC), the negative pole of the second light emitting diode L2 is connected with 18 pin of integrated circuit (IC), the negative pole of the 3rd light emitting diode L3 is connected with 17 pin of integrated circuit (IC), the negative pole of the 4th light emitting diode L4 is connected with 16 pin of integrated circuit (IC), the negative pole of the 5th light emitting diode L5 is connected with 15 pin of integrated circuit (IC), the negative pole of the 6th light emitting diode L6 is connected with 14 pin of integrated circuit (IC), the negative pole of the 7th light emitting diode L7 is connected with 13 pin of integrated circuit (IC), the negative pole of the 8th light emitting diode L8 is connected with 12 pin of integrated circuit (IC), the negative pole of the 9th light emitting diode L9 is connected with 11 pin of integrated circuit (IC), the negative pole of the tenth light emitting diode L10 is connected with 10 pin of integrated circuit (IC), the moved end of described K switch is connected with 5 pin of integrated circuit (IC) and the positive pole of capacitor C by adjustable resistance W and the 4th resistance, 6 pin of integrated circuit (IC) are connected with one end of 7 pin of integrated circuit (IC) and the second resistance R 2, the other end of the second resistance R 2 is connected with one end of the 3rd resistance R 3 and 8 pin of integrated circuit (IC), the 3rd quiet end of the negative pole V-of described direct supply and K switch, the other end of the 3rd resistance R 3, the negative pole of capacitor C, 4 pin of integrated circuit (IC) and 2 pin of integrated circuit (IC) are connected, the second quiet end of described K switch is unsettled.Described direct supply is accumulator or D.C. regulated power supply, and the voltage between its anodal V+ and its negative pole V-is selected 6V.
While making the utility model, with reference to Fig. 2, circuit component is arranged on the back side of a circuit board 1, by the first to the tenth light emitting diode in turn yi word pattern vertically arrange and be arranged on the front of circuit board 1, the anodal V+ terminal of K switch, potentiometer W and D.C. regulated power supply, negative pole V-terminal are arranged on to the first to the tenth light emitting diode downside.During use, toggle switch K first, is allocated to its moved end to connect its second quiet end position, and the positive source V+ of circuit and negative pole V-are connected on direct supply, and mounted circuit board is erected, make the first to the tenth light emitting diode in turn yi word pattern vertically arrange.The moved end of K switch is upwards allocated to and connects its first quiet end position, now, the anodal V+ of direct supply charges to capacitor C by switch, adjustable resistance W, the 4th resistance R 4 successively, at this moment, the first to the tenth light emitting diode is lighted in turn, form the light beam upwards raising gradually, for demonstrating electrical capacity charge process completes; The moved end of K switch is allocated to downwards and connects its 3rd quiet end position, now, electric energy in capacitor C is successively by switch, the 4th resistance R 4, the negative discharge of adjustable resistance W to direct supply, at this moment, the the tenth to first light emitting diode extinguishes in turn, light beam reduces gradually, extinguishes, and demonstrating electrical discharge capacitor process is complete.
Principle of work: the integrated circuit (IC) that model is LM3914 is point/bar display driving integrated circuit of U.S. NS company development. include the compositions such as input buffer, 10 step voltage comparers, 1.25V reference voltage source.Simulating signal adds from its 5 pin, after impact damper amplifies, deliver to the reversed-phase output of 10 step voltage comparers, compare with the reference voltage on the voltage divider of each voltage comparator normal phase input end, reference voltage on every grade of voltage divider is 0.125V, and level is respectively 0.125V, 0.25V, 0.375V, 0.5V step by step ... 1.25V.When input signal is during lower than 0.125V, 10 step voltage comparers are all exported high level, when input signal is during higher than 0.125V, the equal output low level of voltage comparator 1, when input signal is during higher than 0.25V, the equal output low level of voltage comparator 2 ... when input signal is during higher than 1.25V, the equal output low level of voltage comparator 10.On these 10 output terminals, connect light emitting diode, can demonstrate the size of input simulating signal.On 5 pin of simulating signal, connecting capacitor C, and discharge and recharge by switch, adjustable resistance W, 4 pairs of capacitor C of the 4th resistance R, is the voltage that strengthens gradually or reduce to input on integrated circuit 5 pin, by 10 diode displaying.
The utility model is reasonable in design, simple in structure, easy to operate.It forms light beam height mode artificial capacitor by light emitting diode and discharges and recharges, thereby reaches image, object teaching, is convenient to student and understands, grasps.
Claims (9)
1. capacitance charging-discharging demonstrator, is characterized in that: by integrated circuit, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, electric capacity, adjustable resistance, switch and the first to the tenth light emitting diode and direct supply form, one end of the positive pole of described direct supply and the first resistance, the first quiet end of switch, 3 pin of integrated circuit and 9 pin of integrated circuit are connected, the positive pole of the other end of the first resistance and the first light emitting diode, the positive pole of the second light emitting diode, the positive pole of the 3rd light emitting diode, the positive pole of the 4th light emitting diode, the positive pole of the 5th light emitting diode, the positive pole of the 6th light emitting diode, the positive pole of the 7th light emitting diode, the positive pole of the 8th light emitting diode, the positive pole anodal and the tenth light emitting diode of the 9th light emitting diode is connected, the negative pole of the first light emitting diode is connected with 1 pin of integrated circuit, the negative pole of the second light emitting diode is connected with 18 pin of integrated circuit, the negative pole of the 3rd light emitting diode is connected with 17 pin of integrated circuit, the negative pole of the 4th light emitting diode is connected with 16 pin of integrated circuit, the negative pole of the 5th light emitting diode is connected with 15 pin of integrated circuit, the negative pole of the 6th light emitting diode is connected with 14 pin of integrated circuit, the negative pole of the 7th light emitting diode is connected with 13 pin of integrated circuit, the negative pole of the 8th light emitting diode is connected with 12 pin of integrated circuit, the negative pole of the 9th light emitting diode is connected with 11 pin of integrated circuit, the negative pole of the tenth light emitting diode is connected with 10 pin of integrated circuit, the moved end of described switch is connected with 5 pin of integrated circuit and the positive pole of electric capacity by adjustable resistance and the 4th resistance, 6 pin of integrated circuit are connected with one end of 7 pin of integrated circuit and the second resistance, the other end of the second resistance is connected with one end of the 3rd resistance and 8 pin of integrated circuit, the 3rd quiet end of the negative pole of described direct supply and switch, the other end of the 3rd resistance, the negative pole of electric capacity, 4 pin of integrated circuit and 2 pin of integrated circuit are connected, and the second quiet end of described switch is unsettled.
2. capacitance charging-discharging demonstrator according to claim 1, is characterized in that: described direct supply is accumulator or D.C. regulated power supply, and the voltage between its positive pole and its negative pole is 6-12V.
3. capacitance charging-discharging demonstrator according to claim 1, is characterized in that: described switch is that cutter three formulas of throwing are turned round sub-switch or push-pull switch.
4. capacitance charging-discharging demonstrator according to claim 1, is characterized in that: the model of described integrated circuit is LM3914.
5. capacitance charging-discharging demonstrator according to claim 1, is characterized in that: described electric capacity be 220-470Uf, it is withstand voltage is more than or equal to 25V.
6. capacitance charging-discharging demonstrator according to claim 1, is characterized in that: the resistance of described the first resistance is 470-820 Ω, and its power is greater than 2W.
7. capacitance charging-discharging demonstrator according to claim 1, is characterized in that: described the second resistance equates with the resistance of the 3rd resistance, is 1.5-3K Ω.
8. capacitance charging-discharging demonstrator according to claim 1, is characterized in that: the resistance of described the 4th resistance is 1-2K Ω.
9. capacitance charging-discharging demonstrator according to claim 1, is characterized in that: the resistance of described adjustable resistance is 10-51K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271611.5U CN203838936U (en) | 2014-05-27 | 2014-05-27 | Capacitor charging and discharging demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271611.5U CN203838936U (en) | 2014-05-27 | 2014-05-27 | Capacitor charging and discharging demonstration device |
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| Publication Number | Publication Date |
|---|---|
| CN203838936U true CN203838936U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420271611.5U Expired - Fee Related CN203838936U (en) | 2014-05-27 | 2014-05-27 | Capacitor charging and discharging demonstration device |
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| CN (1) | CN203838936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269471A (en) * | 2018-03-28 | 2018-07-10 | 广西职业技术学院 | Square-wave oscillator illustrative circuitry |
| CN110189596A (en) * | 2019-05-31 | 2019-08-30 | 南华大学 | A kind of energy-storage travelling wave tube charging and discharging demonstration device |
-
2014
- 2014-05-27 CN CN201420271611.5U patent/CN203838936U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108269471A (en) * | 2018-03-28 | 2018-07-10 | 广西职业技术学院 | Square-wave oscillator illustrative circuitry |
| CN108269471B (en) * | 2018-03-28 | 2023-04-14 | 广西职业技术学院 | Square wave oscillator demonstration circuit |
| CN110189596A (en) * | 2019-05-31 | 2019-08-30 | 南华大学 | A kind of energy-storage travelling wave tube charging and discharging demonstration device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20150527 |
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| EXPY | Termination of patent right or utility model |