CN204926640U - Photoelectric effect experiment demonstration appearance - Google Patents
Photoelectric effect experiment demonstration appearance Download PDFInfo
- Publication number
- CN204926640U CN204926640U CN201520725992.4U CN201520725992U CN204926640U CN 204926640 U CN204926640 U CN 204926640U CN 201520725992 U CN201520725992 U CN 201520725992U CN 204926640 U CN204926640 U CN 204926640U
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- China
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- teaching
- current sensor
- voltage
- sensor
- photoelectric tube
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Abstract
The utility model relates to a photoelectric effect experiment demonstration appearance. Insert row, remove optical bench, LED emitting diode row, voltage sensor, little current sensor, data collection station, display including teaching photoelectron, many round holes, potentiometre and little current sensor are connected to the teaching photoelectron, voltage sensor connects in parallel at teaching photoelectron and little current sensor's both ends, voltage sensor, little current sensor connect data collection station, data collection station passes through the USB connecting wire and connects the display, the low voltage power supply links to each other with the potentiometre, the beneficial effects of the utility model are that: the light source adopts red, orange, yellow, green, blue, white LED emitting diode row for research vacuum phototube cathode material cutoff frequency, adopt voltage sensor and current sensor data collection, I -U experiment image is drawn to the fast -response recorder developments of being convenient for experimental data, through surveing the reverse voltage of holding back for the biggest photoelectronic kinetic energy is just measured more easily in the experiment.
Description
Technical field
The present invention relates to Middle School Physics teaching aid field, be specifically related to a kind of photoelectric effect experiment demonstrator.
Background technology
Current middle school physical experiment room lacks a kind of photoelectric effect experiment demonstrator, teachers' instruction generally adopts theory explaination, without lecture experiment, student is few for photoelectric effect experiment contact, applied research for photoelectricity knowledge is few, therefore makes vacuum photo tube application demonstrator, introduces digitizer simultaneously, for enriching student's knowwhy, training student manipulative ability and the ability of practice have reality and profound significance.
Summary of the invention
A kind of photoelectric effect experiment demonstrator, comprises base, teaching photoelectric tube, many circular holes insert row, mobile optical bench, LED LED row, voltage sensor, low current sensor, data acquisition unit, potentiometer, low-tension supply, display, USB connecting line; Described base installing teaching photoelectric tube, the groove of the light shield of described teaching photoelectric tube has comprised circular hole insert row more than, for regulating the exposure intensity of incident light, it having comprised six circular holes differed in size; Described base has been installed mobile optical bench, described mobile optical bench connects LED LED row, and described LED LED row comprises the light emitting diode of six kinds of different colours; Described teaching photoelectric tube connects potentiometer and low current sensor; Described voltage sensor is connected in parallel on the two ends of teaching photoelectric tube and low current sensor, for the voltage at MEASUREMENT TEACHING photoelectric tube two ends; Described voltage sensor, low current sensor connection data collector, described data acquisition unit connects display by USB connecting line; Described low-tension supply is connected with potentiometer, and is the DC low voltage power supply of 0 to 36V.
The model of described teaching photoelectric tube is CD – 28 vacuum photo tube.
The invention has the beneficial effects as follows: (1) light source adopts red, orange, yellow, green, blue, white LED luminary diode row, move left and right LED LED row, change the frequency of incident light source, for studying teaching phototube cathode material cutoff frequency, filter sheet structure novelty is variegated, research wide frequency range than conventional incandescent.(2) when studying light intensity change, except the distance adopted between chute change LED light source and photoelectric tube, also adopt many circular holes insert row, irradiated area can be realized from 1S, 2S, 3S ... 6S is optional, move left and right many circular holes insert row, change the effective irradiated area of light source irradiation to teaching photoelectric tube, when light source is fixed, irradiation circular hole is fixed, the voltage be added on teaching photoelectric tube is changed by regulator potentiometer, can measure the saturation current of the photoelectric tube under different irradiated area, two kinds of modes reach the effect played the same tune on different musical instruments.(3) adopt voltage sensor to gather magnitude of voltage, adopt low current sensor to gather current value, accurately, efficiently, utilize digitizer, interface is more directly perceived, be convenient to fast recording dynamic I-U experimental data, draw experiment I-U image, comparative pedagogy photoelectric tube is for the difference of the I-U image of the LED light source of different color light; For degradation phenomenon under the aging photoelectric tube of research, sensitivity, there is the significance of reality.(4) adopt regulator potentiometer to control to be added in the voltage at teaching photoelectric tube two ends, be convenient to become more meticulous and measure electric current in vacuum; By measuring reverse Cut-off voltage, experiment is made more easily to measure photoelectronic maximum just kinetic energy.
Accompanying drawing explanation
Fig. 1 is one of structural drawing of the present invention;
Fig. 2 is structural drawing two of the present invention;
Fig. 3 is theory diagram of the present invention;
In figure, 1-base, 2-teaching photoelectric tube CD – 28,3-many circular holes insert row, 4-move optical bench, 5-LED LED row, 6-voltage sensor, 7-low current sensor, 8-data acquisition unit, 9-potentiometer, 10-low-tension supply, 11-display, 12-USB connecting line.
Embodiment
As shown in Figure 1, Figure 2, Fig. 3, a kind of photoelectric effect experiment demonstrator, comprises base 1, teaching photoelectric tube 2, many circular holes insert row 3, mobile optical bench 4, LED LED row 5, voltage sensor 6, low current sensor 7, data acquisition unit 8, potentiometer 9, low-tension supply 10, display 11, USB connecting line 12; Described base 1 installing teaching photoelectric tube 2, the groove of the light shield of described teaching photoelectric tube 2 has comprised circular hole insert row 3 more than, for regulating the exposure intensity of incident light, it having comprised multiple circular hole differed in size; Described base 1 has been installed mobile optical bench 4, described mobile optical bench 4 connects LED LED row 5, and described LED LED row 5 comprises the light emitting diode of multiple different colours; Described teaching photoelectric tube 2 connects potentiometer 9 and low current sensor 7; Described voltage sensor 6 is connected in parallel on the two ends of teaching photoelectric tube 2 and low current sensor 7, for the voltage at MEASUREMENT TEACHING photoelectric tube 2 two ends; Described voltage sensor 6, low current sensor 7 connection data collector 8, described data acquisition unit 8 connects display 11 by USB connecting line 12; Described low-tension supply 10 is connected with potentiometer 9, and is DC low voltage power supply; Described teaching photoelectric tube 2 model is CD – 28.
The invention has the beneficial effects as follows: (1) light source adopts red, orange, yellow, green, blue, white LED luminary diode row 5, move left and right LED LED row 5, change the frequency of incident light source, for studying teaching photoelectric tube 2 cathode material cutoff frequency, filter sheet structure novelty is variegated, research wide frequency range than conventional incandescent.(2) when studying light intensity change, except the distance adopted between chute change LED light source and photoelectric tube, also adopt many circular holes insert row 3, irradiated area can be realized from 1S, 2S, 3S ... 6S is optional, move left and right many circular holes insert row 3, change the effective irradiated area of light source irradiation to teaching photoelectric tube 2, when light source is fixed, irradiation circular hole is fixed, the voltage be added on teaching photoelectric tube 2 is changed by regulator potentiometer 9, can measure the saturation current of the photoelectric tube under different irradiated area, two kinds of modes reach the effect played the same tune on different musical instruments.(3) adopt voltage sensor 6 to gather magnitude of voltage, adopt low current sensor 7 to gather current value, accurately, efficiently, utilize digitizer, interface is more directly perceived, be convenient to fast recording dynamic I-U experimental data, draw experiment I-U image, comparative pedagogy photoelectric tube 2 is for the difference of the I-U image of the LED light source of different color light; For degradation phenomenon under the aging photoelectric tube of research, sensitivity, there is the significance of reality.(4) adopt regulator potentiometer 9 to control to be added in the voltage at teaching photoelectric tube 2 two ends, be convenient to become more meticulous and measure electric current in vacuum; By measuring reverse Cut-off voltage, experiment is made more easily to measure photoelectronic maximum just kinetic energy.
Claims (2)
1. a photoelectric effect experiment demonstrator, comprises base (1), teaching photoelectric tube (2), many circular holes insert row (3), mobile optical bench (4), LED LED row (5), voltage sensor (6), low current sensor (7), data acquisition unit (8), potentiometer (9), low-tension supply (10), display (11), USB connecting line (12); It is characterized in that: described teaching photoelectric tube (2) connects potentiometer (9) and low current sensor (7); Described voltage sensor (6) is connected in parallel on the two ends of teaching photoelectric tube (2) and low current sensor (7); Described voltage sensor (6), low current sensor (7) connection data collector (8), described data acquisition unit (8) connects display (11) by USB connecting line (12); Described low-tension supply (10) is connected with potentiometer (9), and is the DC low voltage power supply of 0 to 36V.
2. a kind of photoelectric effect experiment demonstrator according to claim 1, is characterized in that: the model of described teaching photoelectric tube (2) is CD – 28 vacuum photo tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520725992.4U CN204926640U (en) | 2015-09-20 | 2015-09-20 | Photoelectric effect experiment demonstration appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520725992.4U CN204926640U (en) | 2015-09-20 | 2015-09-20 | Photoelectric effect experiment demonstration appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204926640U true CN204926640U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520725992.4U Expired - Fee Related CN204926640U (en) | 2015-09-20 | 2015-09-20 | Photoelectric effect experiment demonstration appearance |
Country Status (1)
| Country | Link |
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| CN (1) | CN204926640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139730A (en) * | 2015-09-20 | 2015-12-09 | 兴化市成顺消防科技研究院有限公司 | Vacuum tube photoelectric effect experimental demonstration instrument |
-
2015
- 2015-09-20 CN CN201520725992.4U patent/CN204926640U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139730A (en) * | 2015-09-20 | 2015-12-09 | 兴化市成顺消防科技研究院有限公司 | Vacuum tube photoelectric effect experimental demonstration instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20151230 Termination date: 20160920 |