CN210142438U - Magnetic power supply for physical teaching experiment - Google Patents
Magnetic power supply for physical teaching experiment Download PDFInfo
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- CN210142438U CN210142438U CN201920835952.3U CN201920835952U CN210142438U CN 210142438 U CN210142438 U CN 210142438U CN 201920835952 U CN201920835952 U CN 201920835952U CN 210142438 U CN210142438 U CN 210142438U
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Abstract
A power supply used for magnetic attraction type physical teaching experiments comprises a rechargeable battery, a shell, a strong magnet, a charging interface, a voltage stabilizing module capable of adjusting voltage, a protective tube, a direct-pull type voltage gear switch, a power switch and positive and negative wiring terminals; the shell is firmly connected with the strong magnet. Traditional teaching power is too heavy, and need insert the commercial power, can not inhale the magnetism and inhale on the blackboard, and the teacher demonstrates in the classroom can only change output voltage through the number that increases and decreases the dry battery, and the operation is inconvenient. The product is matched with a magnetic bulb, a light-emitting diode, a resistor, a sliding resistor and the like, and can visually display an electrical experiment on a blackboard to students, thereby bringing great convenience to the teaching of teachers and the cognition of the students; the battery charger has the characteristics of light weight, small volume, simple operation, low cost, repeated charging use, overload current protection, long service life and the like.
Description
Technical Field
The utility model relates to a middle school physics teaching field, in particular to magnetism is inhaled power that formula physics teaching experiment used.
Background
In the current teaching of middle school physics experiments, a teaching power supply is indispensable equipment, and the traditional teaching power supply is too heavy, large in size and inconvenient to carry. When the device is used, a 220V city power grid needs to be connected, or a conditional school can only go to a laboratory for experiment, great inconvenience is caused to teaching of teachers, and students cannot visually observe connection of electrical experiments and phenomena generated by the experiments.
The teaching condition in city is good, can carry out the one-to-one teaching in the laboratory, every student all has the test bench, the teacher has the multimedia teaching equipment to use, there is the large screen like the student to show, but most schools below county and city do not all possess these excellent and thick conditions, can only use simple and traditional mode to carry out the teaching, the student can only use the large size battery on the market as experimental power, and the large size battery on the market has eliminated gradually, in the middle school physics experiment teaching, to obtain the required voltage of experiment, the teacher demonstrates in the classroom can only change output voltage through the number that increases and decreases the dry battery, it is inconvenient to operate. And the common battery has short service life, can not be reused, causes the waste of resources and can cause pollution to the environment. Under the condition of poor conditions, teachers cannot explain one by one and only explain on the platform uniformly, and at the moment, if experiments such as circuit connection and the like are carried out on the table top of the platform or a test bed, all students cannot see all experimental details clearly, and the experiments are not intuitive.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a required magnetism of physics experiment is inhaled formula chargeable, have the power of stabilizing adjustable output voltage to solve the problem that can not show the experiment directly perceived for the student in the classroom that prior art exists.
A power supply used for magnetic attraction type physical teaching experiments comprises a rechargeable battery, a shell, a strong magnet, a charging interface, a voltage stabilizing module capable of adjusting voltage, a protective tube, a direct-pull type voltage gear switch, a power switch and positive and negative wiring terminals; the shell is firmly connected with the strong magnet; the rechargeable battery, the voltage-adjustable voltage stabilizing module and the protective tube are all arranged in the shell; the direct-pulling voltage gear switch, the power switch, the positive and negative terminals and the charging interface are embedded on the shell; the rechargeable battery is connected with the charging interface in parallel; voltage stabilizing modules with adjustable voltage are connected in parallel; the rechargeable battery, the protective tube, the power switch, the direct-pull voltage gear switch and the voltage stabilizing module which is connected in parallel and can adjust voltage are sequentially connected in series to form a loop; the negative terminal is connected with the negative electrode of the power supply and the negative input end of each voltage-adjustable voltage stabilizing module; the positive terminal is respectively connected with the positive output end of the voltage-adjustable voltage stabilizing module and the 9v output end of the direct-pull voltage gear switch; the output voltage is controlled by controlling whether the voltage of the positive pole of the voltage stabilizing module of each adjustable voltage is input through the direct-pulling voltage gear switch. The power switch is set to be in a disconnected state when not in use, and the electric energy of the battery is not consumed. The design of strong magnet makes the power can adsorb on magnetism black or blank, and can remove at will, and supporting magnetism is inhaled bulb, emitting diode, resistance, sliding resistor etc. and can demonstrate the electricity experiment directly perceived on black or blank and give the student, provide very big facility for the teaching of physics demonstration experiment. Even if the magnetic black or white board is not available, the small magnetic black or white board can be used for demonstration; and can freely move on a black or white board according to the teaching experiment requirements. Two positive and negative terminals are not needed to be changed after being connected into a circuit, and the device is convenient and practical.
In a preferred embodiment, the power supply used in the magnetic attraction type physical teaching experiment further comprises a power supply indicator light, wherein one end of the power supply indicator light is connected with the power supply, and the other end of the power supply indicator light is connected between the power supply switch and the direct-pull voltage gear switch; when the power supply is turned on and is normal, the indicator light is turned on; when the power supply is turned off or the fuse tube is fused, the indicator light is not on.
In a preferred embodiment, the rechargeable battery adopts a 9V280mAh rechargeable battery commonly used in the market, can be repeatedly charged and used, and is convenient and quick.
In a preferred embodiment, the rechargeable battery is removable and replaceable after its useful life.
In a preferred embodiment, the positive and negative outputs of the power supply are connected by a pressure joint, so that poor contact of the battery is prevented.
In a preferred embodiment, the voltage-adjustable voltage stabilizing modules are respectively provided with three voltage stabilizing values of 3v, 4.5v and 6v so as to adjust voltage values of 3v, 4.5v, 6v and 9v which are commonly used in experiments, and when the voltage of the battery is reduced, the most commonly used stable voltage outputs of 3v, 4.5v and 6v can still be ensured.
In a preferred embodiment, the maximum allowable current value of the fuse tube is 3A, so that the influence on the voltage stabilizing circuit during short circuit or overload is avoided, the fuse tube can be fused during short circuit or overload in an experiment, and the fuse tube can be replaced by opening the box cover after being fused.
In the preferred embodiment, the direct-drawing voltage keeps off position switch and is equipped with four gears, during the use, can be according to the voltage of experiment demand, with the direct-drawing voltage keep off position switch pull out corresponding fender position, provide corresponding stable voltage for the experiment circuit, easy operation is convenient.
In a preferred embodiment, the power supply used in the magnetic attraction type physical teaching experiment is further provided with a charger with corresponding voltage to ensure that the power supply can be used repeatedly, and the output voltage of the charger is 9V.
In a preferred embodiment, the length, width and height of the shell are respectively less than 12cm, 12cm and 3.5 cm.
In a preferred embodiment, the magnetic blackboard or whiteboard is fixed or movable; the movable magnetic blackboard or the movable magnetic whiteboard can be horizontally placed or vertically placed according to actual experimental requirements; after the experiment is finished, the movable magnetic blackboard or whiteboard can reserve the experiment result according to the actual requirement for the next experiment, and the connection work before the next experiment is not required to be repeated; the operation is simple and quick.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a design of strong magnet makes the power can adsorb on black or the blank of magnetism, and can remove at will, and supporting magnetism is inhaled bulb, emitting diode, resistance, sliding resistor etc. and can show electricity experiment directly perceived on black or blank and give the student, provide very big facility for teaching physics demonstration experiment.
2. The battery of this design is rechargeable battery, can use of charging repeatedly, and rechargeable battery is detachable, still can change convenient and fast after reaching life.
3. During the use, can be according to the voltage of experiment demand, will directly pull out formula voltage and keep off the position switch and pull out corresponding fender position, for the experiment circuit provides corresponding stable voltage, easy operation is convenient, overload current protection in addition.
4. The magnetic blackboard or whiteboard is fixed or movable; the movable magnetic blackboard or the movable magnetic whiteboard can be horizontally placed or vertically placed according to actual experimental requirements; after the experiment is finished, the movable magnetic blackboard or whiteboard can reserve the experiment result according to the actual requirement for the next experiment, and the connection work before the next experiment is not required to be repeated; the operation is simple and quick.
5. The invention has the characteristics of reasonable design, light weight, small volume, simple operation, low cost, long service life and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of the circuit principle of the present invention.
Fig. 2 is a plan view of the present invention.
Fig. 3 is a circuit connection display diagram according to an embodiment of the present invention.
Fig. 4 is a circuit connection display diagram according to another embodiment of the present invention.
Fig. 5 is a circuit diagram in an embodiment of the invention.
Fig. 6 is a circuit diagram of another embodiment of the present invention.
Fig. 7 is a schematic diagram of the distribution of the internal structure in an embodiment of the present invention.
The labels in the figure are:
1. the device comprises a shell, a rechargeable battery, a voltage-adjustable voltage stabilizing module, a protective tube, a binding post, a charging interface, a power indicator, a direct-pull voltage gear switch and a power switch, wherein the rechargeable battery is 2, the voltage-adjustable voltage stabilizing module is 3, the protective tube is 4, the binding post is 5, the charging interface is 6, the power indicator is 7, the direct-pull voltage gear switch is 8, and the power switch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following embodiments. Wherein like reference numerals refer to like parts unless otherwise specified. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
Example 1
The power supply used for the magnetic attraction type physical teaching experiment shown in the circuit diagram of fig. 1 comprises a rechargeable battery 2, a shell 1, a strong magnet, a charging interface 6, a voltage-adjustable voltage stabilizing module 3, a protective tube 4, a direct-pull type voltage gear switch 8, a power switch 9 and positive and negative terminals 5; the shell 1 is firmly connected with a strong magnet; the rechargeable battery 2, the voltage-adjustable voltage stabilizing module 3 and the protective tube 4 are all arranged in the shell 1; the direct-pulling type voltage gear switch 8, the power switch 9, the positive and negative terminals 5 and the charging interface 6 are embedded on the shell 1; the rechargeable battery 2 is connected with the charging interface 6 in parallel; the voltage stabilizing modules 3 with adjustable voltage are connected in parallel; the rechargeable battery 2, the protective tube 4, the power switch 9, the direct-pull voltage gear switch 8 and the voltage-adjustable voltage stabilizing module 3 which are connected in parallel are sequentially connected in series to form a loop; the negative terminal 5 is connected with the negative electrode of the power supply and the negative input end of each voltage-adjustable voltage stabilizing module 3; the positive terminal 5 is respectively connected with the positive output end of the voltage-adjustable voltage stabilizing module 3 and the 9v output end of the direct-pull voltage gear switch 8; the direct-pull voltage gear switch 8 is used for controlling whether the voltage of the positive electrode of the voltage stabilizing module 3 with adjustable voltage is input or not so as to control the output voltage. The power switch 9 is set to be in off state when not in use, and does not consume the electric energy of the battery. The design of strong magnet makes the power can adsorb on the magnetism blackboard, and can remove at will, and supporting magnetism is inhaled emitting diode, sliding resistor and knife switch, as shown in fig. 3, can demonstrate the electricity experiment directly perceived on the blackboard and give the student. Two positive and negative terminals 5 need not to be changed after being connected into the circuit, and are convenient and practical.
The power supply used in the magnetic attraction type physical teaching experiment further comprises a power supply indicator light 7, wherein one end of the power supply indicator light 7 is connected with the power supply, and the other end of the power supply indicator light 7 is connected between a power switch 9 and a direct-drawing voltage gear switch 8; when the power supply is turned on and is normal, the indicator light is turned on; when the power supply is turned off or the fuse 4 is fused, the indicator light is not on.
The rechargeable battery 2 adopts a 9V280mAh rechargeable battery which is commonly used in the market, can be repeatedly charged and used, and is convenient and fast.
The rechargeable battery 2 is detachable and can be replaced after the service life is reached.
The positive and negative outputs of the power supply are connected by adopting a crimping connector, so that poor contact of the battery is prevented.
The voltage stabilizing value of the voltage-adjustable voltage stabilizing module 3 is 3 v.
The maximum current value that 4 protective tubes allow to pass through be 3A, to voltage stabilizing circuit's influence when avoiding short circuit or transshipping, can fuse 4 because of short circuit or transshipping in the experiment, open the lid after 4 protective tubes fuse and change 4 protective tubes can.
The direct-pulling type voltage gear switch 8 is provided with four gears, the direct-pulling type voltage gear switch 8 is pulled to a corresponding 3V gear, and corresponding stable 3V voltage is provided for an experimental circuit as shown in fig. 2.
The power that formula physics teaching experiment was used is inhaled to magnetism still be equipped with the charger of corresponding voltage to guarantee that this power can used repeatedly, the output voltage of charger be 9V.
In a preferred embodiment, the length, width and height of the housing 1 are 12cm, 12cm and 3.5cm respectively.
The magnetic white board is movable; the movable magnetic whiteboard can be horizontally placed or vertically placed according to actual experimental requirements; the movable magnetic blackboard or the movable magnetic whiteboard can keep the experiment result after the experiment is finished, is used for the next experiment, and avoids the connection work before repetition when the next experiment is carried out.
Example 2
A power supply used for magnetic attraction type physical teaching experiments comprises a rechargeable battery 2, a shell 1, a strong magnet, a charging interface 6, a voltage stabilizing module 3 with adjustable voltage, a protective tube 4, a direct-pull type voltage gear switch 8, a power switch 9 and positive and negative terminals 5; the shell 1 is firmly connected with a strong magnet; the rechargeable battery 2, the voltage-adjustable voltage stabilizing module 3 and the protective tube 4 are all arranged in the shell 1; the direct-pulling type voltage gear switch 8, the power switch 9, the positive and negative terminals 5 and the charging interface 6 are embedded on the shell 1; the rechargeable battery 2 is connected with the charging interface 6 in parallel; the voltage stabilizing modules 3 with adjustable voltage are connected in parallel; the rechargeable battery 2, the protective tube 4, the power switch 9, the direct-pull voltage gear switch 8 and the voltage-adjustable voltage stabilizing module 3 which are connected in parallel are sequentially connected in series to form a loop; the negative terminal 5 is connected with the negative electrode of the power supply and the negative input end of each voltage-adjustable voltage stabilizing module 3; the positive terminal 5 is respectively connected with the positive output end of the voltage-adjustable voltage stabilizing module 3 and the 9v output end of the direct-pull voltage gear switch 8; the direct-pull voltage gear switch 8 is used for controlling whether the voltage of the positive electrode of the voltage stabilizing module 3 with adjustable voltage is input or not so as to control the output voltage. The power switch 9 is set to be in off state when not in use, and does not consume the electric energy of the battery. The design of strong magnet makes the power can adsorb on the magnetism blank, and can remove at will, and supporting two magnetism inhale emitting diode, a magnetism inhale sliding resistance, a knife switch, as shown in figure 4, can demonstrate the electricity experiment directly perceived on the blank and give the student. The circuit diagram is shown in fig. 5, and the two positive and negative terminals 5 do not need to be changed after being connected into the circuit.
The power supply used in the magnetic attraction type physical teaching experiment further comprises a power supply indicator light 7, wherein one end of the power supply indicator light 7 is connected with the power supply, and the other end of the power supply indicator light 7 is connected between a power switch 9 and a direct-drawing voltage gear switch 8; when the power supply is turned on and is normal, the indicator light is turned on; when the power supply is turned off or the fuse 4 is fused, the indicator light is not on.
The rechargeable battery 2 adopts a 9V280mAh rechargeable battery which is commonly used in the market, can be repeatedly charged and used, and is convenient and fast.
The rechargeable battery 2 is detachable and can be replaced after the service life is reached.
The positive and negative outputs of the power supply are connected by adopting a crimping connector, so that poor contact of the battery is prevented.
The voltage stabilizing value of the voltage-adjustable voltage stabilizing module 3 is 6 v.
The maximum current value that 4 protective tubes allow to pass through be 3A, to voltage stabilizing circuit's influence when avoiding short circuit or transshipping, can fuse 4 because of short circuit or transshipping in the experiment, open the lid after 4 protective tubes fuse and change 4 protective tubes can.
The direct-pulling voltage gear switch 8 is provided with four gears, the direct-pulling voltage gear switch 8 is pulled to a corresponding 6v gear, and corresponding stable 6v voltage is provided for an experimental circuit as shown in fig. 4.
The power that formula physics teaching experiment was used is inhaled to magnetism still be equipped with the charger of corresponding voltage to guarantee that this power can used repeatedly, the output voltage of charger be 9V.
The length, width and height of the shell 1 are respectively 11.8cm, 11.8cm and 3.5 cm.
Example 3
The power supply used for the magnetic attraction type physical teaching experiment shown in the circuit diagram of fig. 1 comprises a rechargeable battery 2, a shell 1, a strong magnet, a charging interface 6, a voltage-adjustable voltage stabilizing module 3, a protective tube 4, a direct-pull type voltage gear switch 8, a power switch 9 and positive and negative terminals 5; the shell 1 is firmly connected with a strong magnet; the rechargeable battery 2, the voltage-adjustable voltage stabilizing module 3 and the protective tube 4 are all arranged in the shell 1; the direct-pulling type voltage gear switch 8, the power switch 9, the positive and negative terminals 5 and the charging interface 6 are embedded on the shell 1; the rechargeable battery 2 is connected with the charging interface 6 in parallel; the voltage stabilizing modules 3 with adjustable voltage are connected in parallel; the rechargeable battery 2, the protective tube 4, the power switch 9, the direct-pull voltage gear switch 8 and the voltage-adjustable voltage stabilizing module 3 which are connected in parallel are sequentially connected in series to form a loop; the negative terminal 5 is connected with the negative electrode of the power supply and the negative input end of each voltage-adjustable voltage stabilizing module 3; the positive terminal 5 is respectively connected with the positive output end of the voltage-adjustable voltage stabilizing module 3 and the 9v output end of the direct-pull voltage gear switch 8; the direct-pull voltage gear switch 8 is used for controlling whether the voltage of the positive electrode of the voltage stabilizing module 3 with adjustable voltage is input or not so as to control the output voltage. The power switch 9 is set to be in off state when not in use, and does not consume the electric energy of the battery. The design of the strong power magnet used in the magnetic attraction type physical teaching experiment is matched with 1 magnetic attraction light-emitting diode, 1 sliding resistor, 3 knife switch, 1 bulb and 1 resistor, and a circuit diagram shown in figure 6 is demonstrated by a small magnetic blackboard; and can freely move on a small magnetic blackboard according to the teaching experiment requirements. Two positive and negative terminals 5 need not to be changed after being connected into the circuit, and are convenient and practical.
The power supply used in the magnetic attraction type physical teaching experiment further comprises a power supply indicator light 7, wherein one end of the power supply indicator light 7 is connected with the power supply, and the other end of the power supply indicator light 7 is connected between a power switch 9 and a direct-drawing voltage gear switch 8; when the power supply is turned on and is normal, the indicator light is turned on; when the power supply is turned off or the fuse 4 is fused, the indicator light is not on.
The rechargeable battery 2 adopts a 9V280mAh rechargeable battery commonly used in the market, and the rechargeable battery is fully charged.
The rechargeable battery 2 is detachable and can be replaced after the service life is reached.
The positive and negative outputs of the power supply are connected by adopting a crimping connector, so that poor contact of the battery is prevented.
The voltage stabilizing value of the voltage-adjustable voltage stabilizing module 3 is 9 v.
The maximum current value that 4 protective tubes allow to pass through be 3A, to voltage stabilizing circuit's influence when avoiding short circuit or transshipping, can fuse 4 because of short circuit or transshipping in the experiment, open the lid after 4 protective tubes fuse and change 4 protective tubes can.
Direct-drawing voltage keep off position switch 8 and be equipped with four gears, during the use, can be according to the voltage of experiment demand, with direct-drawing voltage keep off position switch 8 and pull out corresponding fender position, provide corresponding stable voltage for the experiment circuit.
The power that formula physics teaching experiment was used is inhaled to magnetism still be equipped with the charger of corresponding voltage to guarantee that this power can used repeatedly, the output voltage of charger be 9V.
The length, width and height of the shell 1 are respectively 11cm, 11cm and 3.2 cm.
Example 4
A power supply used for magnetic attraction type physical teaching experiments comprises a rechargeable battery 2, a shell 1, a strong magnet, a charging interface 6, a voltage stabilizing module 3 with adjustable voltage, a protective tube 4, a direct-pull type voltage gear switch 8, a power switch 9 and positive and negative terminals 5; the shell 1 is firmly connected with a strong magnet; the rechargeable battery 2, the voltage-adjustable voltage stabilizing module 3 and the protective tube 4 are all arranged in the shell 1; the direct-pulling type voltage gear switch 8, the power switch 9, the positive and negative terminals 5 and the charging interface 6 are embedded on the shell 1; the rechargeable battery 2 is connected with the charging interface 6 in parallel; the voltage stabilizing modules 3 with adjustable voltage are connected in parallel; the rechargeable battery 2, the protective tube 4, the power switch 9, the direct-pull voltage gear switch 8 and the voltage-adjustable voltage stabilizing module 3 which are connected in parallel are sequentially connected in series to form a loop; the negative terminal is connected with the negative electrode of the power supply and the negative input end of each voltage-adjustable voltage stabilizing module 3; the positive terminal is respectively connected with the positive output end of the voltage-adjustable voltage stabilizing module 3 and the 9v output end of the direct-pull voltage gear switch 8; the direct-pull voltage gear switch 8 is used for controlling whether the voltage of the positive electrode of the voltage stabilizing module 3 with adjustable voltage is input or not so as to control the output voltage. The power switch 9 is set to be in off state when not in use, and does not consume the electric energy of the battery. The design of the strong power magnet used in the magnetic attraction type physical teaching experiment is matched with 1 magnetic attraction light-emitting diode, 1 knife switch, 1 bulb and 1 resistor, and a small magnetic white board is used for demonstration; and can freely move on the small magnetic white board according to the teaching experiment requirements.
The power supply used in the magnetic attraction type physical teaching experiment further comprises a power supply indicator light 7, wherein one end of the power supply indicator light 7 is connected with the power supply, and the other end of the power supply indicator light 7 is connected between a power switch 9 and a direct-drawing voltage gear switch 8; when the power supply is turned on and is normal, the indicator light is turned on; when the power supply is turned off or the fuse 4 is fused, the indicator light is not on.
The rechargeable battery 2 adopts a 9V280mAh rechargeable battery which is commonly used in the market, can be repeatedly charged and used, and is convenient and fast.
The rechargeable battery 2 is detachable and can be replaced after the service life is reached.
The positive and negative outputs of the power supply are connected by adopting a crimping connector, so that poor contact of the battery is prevented.
The voltage stabilizing value of the voltage-adjustable voltage stabilizing module 3 is 4.5 v.
The maximum current value that 4 protective tubes allow to pass through be 3A, to voltage stabilizing circuit's influence when avoiding short circuit or transshipping, can fuse 4 because of short circuit or transshipping in the experiment, open the lid after 4 protective tubes fuse and change 4 protective tubes can.
The direct-drawing voltage gear switch 8 is provided with four gears, the direct-drawing voltage gear switch 8 is drawn to a corresponding 4.5v gear, and a corresponding stable 4.5v voltage is provided for an experimental circuit.
The power that formula physics teaching experiment was used is inhaled to magnetism still be equipped with the charger of corresponding voltage to guarantee that this power can used repeatedly, the output voltage of charger be 9V.
The length, width and height of the shell 1 are respectively 11cm, 11cm and 3.2 cm.
In the description of the present invention, it is to be noted that the terms "connected" and "connected" are to be interpreted broadly unless explicitly stated or limited otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the technical field of the utility model belongs to the prerequisite of not deviating from the utility model discloses, can also make a plurality of equal substitution or obvious variants, performance or usage are the same moreover, all should regard as belonging to the utility model's scope of protection.
Claims (10)
1. A power supply used for magnetic attraction type physical teaching experiments is characterized by comprising a rechargeable battery (2), a shell (1), a strong magnet, a charging interface (6), a voltage-adjustable voltage stabilizing module (3), a protective tube (4), a direct-pull type voltage gear switch (8), a power switch (9) and positive and negative terminals (5); the shell (1) is stably connected with the strong magnet; the rechargeable battery (2), the voltage-adjustable voltage stabilizing module (3) and the protective tube (4) are all arranged in the shell (1); the direct-pulling type voltage gear switch (8), the power switch (9), the positive and negative terminals (5) and the charging interface (6) are embedded on the shell (1); the rechargeable battery (2) is connected with the charging interface (6) in parallel; the voltage stabilizing modules (3) with adjustable voltage are connected in parallel; the rechargeable battery (2), the protective tube (4), the power switch (9), the direct-pull voltage gear switch (8) and the voltage-adjustable voltage stabilizing module (3) which are connected in parallel are sequentially connected in series to form a loop; the negative terminal is connected with the negative electrode of the power supply and the negative input end of each voltage-adjustable voltage stabilizing module (3); the positive terminal is respectively connected with the positive output end of the voltage-adjustable voltage stabilizing module (3) and the direct-pull voltage gear switch (8); the direct-pull voltage gear switch (8) is used for controlling whether the voltage of the positive electrode of each voltage-adjustable voltage stabilizing module (3) is input or not so as to control the output voltage.
2. The power supply used in the magnetic attraction type physical teaching experiment according to claim 1, further comprising a power supply indicator light (7), wherein one end of the power supply indicator light (7) is connected with the power supply, and the other end of the power supply indicator light is connected between a power switch (9) and a direct-pull voltage gear switch (8); when the power supply is turned on and is normal, the indicator light is turned on; when the power supply is turned off or the fuse tube (4) is fused, the indicator light is not on.
3. The power supply for the magnetic attraction type physical teaching experiment according to claim 1, wherein the rechargeable battery (2) is detachable and replaceable after the service life is reached.
4. The power supply for magnetic-type physical teaching experiment as claimed in claim 1, wherein the rechargeable battery (2) is a commercial 9V280mAh battery.
5. The power supply for the magnetic attraction type physical teaching experiment according to claim 1 or 4, wherein the voltage-adjustable voltage stabilizing module (3) is respectively provided with three voltage stabilizing values of 3v, 4.5v and 6v so as to adjust the voltage values of 3v, 4.5v, 6v and 9v commonly used in the experiment, and when the voltage of the battery is reduced, the most commonly used voltage output of 3v, 4.5v and 6v can be ensured.
6. The power supply for the magnetic attraction type physical teaching experiment according to claim 1, wherein the maximum allowable current value of the fuse tube (4) is 3A, so that the influence on a voltage stabilizing circuit in the case of short circuit or overload is avoided, the fuse tube (4) can be fused in the experiment in the case of short circuit or overload, and the fuse tube (4) can be replaced after the fuse tube (4) is fused.
7. The power supply for the magnetic attraction type physical teaching experiment according to claim 1, wherein the direct-pull type voltage gear switch (8) is provided with four gears.
8. A magnetic power supply for physical teaching experiment as claimed in claim 1 or 4, wherein the rechargeable battery (2) is further provided with a charger with corresponding voltage, and the output voltage of the charger is 9V.
9. The power supply for the magnetic attraction type physical teaching experiment according to claim 1, wherein the positive and negative outputs of the power supply are connected by a crimping connector.
10. The magnetic power supply for physical teaching experiment as claimed in claim 1, wherein the length, width and height of the housing (1) are respectively less than 12cm, 12cm and 3.5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835952.3U CN210142438U (en) | 2019-06-03 | 2019-06-03 | Magnetic power supply for physical teaching experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920835952.3U CN210142438U (en) | 2019-06-03 | 2019-06-03 | Magnetic power supply for physical teaching experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210142438U true CN210142438U (en) | 2020-03-13 |
Family
ID=69734326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920835952.3U Expired - Fee Related CN210142438U (en) | 2019-06-03 | 2019-06-03 | Magnetic power supply for physical teaching experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210142438U (en) |
-
2019
- 2019-06-03 CN CN201920835952.3U patent/CN210142438U/en not_active Expired - Fee Related
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