CN217034970U - Series-parallel connection demonstration teaching aid - Google Patents
Series-parallel connection demonstration teaching aid Download PDFInfo
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- CN217034970U CN217034970U CN202220533587.2U CN202220533587U CN217034970U CN 217034970 U CN217034970 U CN 217034970U CN 202220533587 U CN202220533587 U CN 202220533587U CN 217034970 U CN217034970 U CN 217034970U
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Abstract
The utility model discloses a series-parallel connection demonstration teaching aid, which comprises: an insulating case having a storage space formed therein; each circuit element provided on the side wall of the insulating box to form a series circuit and a parallel circuit; the line lamp is partially covered on the side wall of the insulating box along the current flowing direction, and the wiring terminal penetrates through the side wall of the insulating box and is positioned in the storage space so as to simulate the current trend of the series circuit and the parallel circuit; and the electric wire is used for connecting each circuit element and the streamer lamp. The utility model has the beneficial effects of simulating current flow and enabling students to vividly and intuitively understand the abstract concept of the current.
Description
Technical Field
The utility model relates to the technical field of teaching aid equipment. More specifically, the utility model relates to a series-parallel connection demonstration teaching aid.
Background
In the teaching process of the series-parallel circuit, in order to enable students to understand the series-parallel circuit, the students usually need to assist in demonstration by means of experimental components, and the problems of more components, scattering and difficulty in carrying exist. The patent with application number 201820951255X and name a series-parallel circuit teaching board discloses that circuit elements are integrated on the teaching board, so that the problems of being scattered and not easy to carry are solved, and when the teaching board is used, the teaching board still has the problems that the current flow can not be simulated, and students can visually understand the abstract concept of the current.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to address at least the above problems and to provide at least the advantages described hereinafter.
The utility model also aims to provide a series-parallel connection demonstration teaching aid which can simulate the flow of series-parallel connection current and enable students to visually understand the abstract concept of the current.
To achieve these objects and other advantages in accordance with the purpose of the utility model, there is provided a series-parallel demonstration teaching aid comprising:
an insulating case having a storage space formed therein;
each circuit element provided on the side wall of the insulating box to form a series circuit and a parallel circuit;
the line lamp is partially covered on the side wall of the insulating box along the current flowing direction, and the wiring terminal penetrates through the side wall of the insulating box and is positioned in the storage space so as to simulate the current trend of the series circuit and the parallel circuit;
and the electric wire is used for connecting each circuit element and the streamer lamp.
Preferably, the circuit element for forming the series circuit comprises a positive terminal A, a negative terminal A, a power supply, a switch A, at least one lamp holder A and a lamp bulb A corresponding to the lamp holder A, wherein the positive terminal A, the switch A, the at least one lamp holder A and the negative terminal A are sequentially electrically connected through electric wires, and the power supply is respectively connected with the positive terminal A and the negative terminal A for supplying power.
Preferably, the streamer lamp corresponding to the series circuit comprises 2, wherein one simulates a current flow direction from the positive terminal a to one point of the series circuit, and the other simulates a current flow direction from one point of the series circuit to the positive terminal a;
the cathode ends of the 2 streamer lamps are connected with the cathode binding post A, and the anode ends of the two streamer lamps are connected with one end of the switch A, so that the on/off of the switch A respectively controls the on/off of the two streamer lamps.
Preferably, the insulating box comprises a square frame and substrates covering two sides of the square frame, and the series circuit and the parallel circuit are respectively formed on the substrate on one side.
Preferably, a first through hole is formed through the substrate corresponding to the series circuit at each of the positive terminal a and the negative terminal a, a second through hole is formed through the substrate at one point of the series circuit, two ends of one of the light ray lamps corresponding to the series circuit respectively pass through the first through hole and the second through hole, and two ends of the other light ray lamp corresponding to the series circuit respectively pass through the other first through hole and the second through hole.
Preferably, the second through hole is hidden between one of the lamp sockets a and the corresponding substrate.
Preferably, the circuit elements for forming the parallel circuit include a positive terminal B, a negative terminal B, a switch B, at least one lamp socket B, a bulb B corresponding to the lamp socket B, a switch C, at least one lamp socket C, a bulb C corresponding to the lamp socket C; the positive terminal B, the switch B, the at least one lamp holder B and the negative terminal B are electrically connected through electric wires in sequence to form a first branch circuit; the positive terminal B, the switch C, the at least one lamp holder C and the negative terminal B are electrically connected through electric wires in sequence to form a second branch circuit; the positive terminal B is connected with the positive terminal A through a wire, and the negative terminal B is connected with the negative terminal A through a wire, so that the parallel circuit is powered through a power supply.
Preferably, the first branch and the second branch share a portion connected to the positive terminal B and the negative terminal B; the streamer lamp corresponding to the parallel circuit comprises 4 streamer lamps, namely a head streamer lamp for simulating the current flowing direction to the branch position from the positive terminal B, a first branch streamer lamp for simulating the current flowing direction of the first branch positioned between the two branch positions, a second branch streamer lamp for simulating the current flowing direction of the second branch positioned between the two branch positions, and a tail streamer lamp for simulating the current flowing line from the other branch position to the negative terminal B;
the cathode ends of the 4 flow light lamps are all connected with the cathode binding post B, the anode ends of the head flow light lamps and the tail flow light lamps are all divided into two parts and are respectively connected with one ends of the switch B and the switch C, the anode end of the first branch flow light lamp is connected with one end of the switch B, the anode end of the second branch flow light lamp is connected with one end of the switch C, so that the on/off of the switch B respectively controls the on/off of the first branch flow light lamp, the on/off of the switch C respectively controls the on/off of the second branch flow light lamp, when at least one of the switch B and the switch C is closed, the head flow light lamp and the tail flow light are twinkling, and when the switch B and the switch C are both opened, the head flow light lamp and the tail flow light are extinguished.
Preferably, a third through hole is formed in the position, corresponding to the parallel circuit, of the substrate and is located at the positive terminal B and the negative terminal B, fourth through holes are formed in the position, corresponding to the two branches of the parallel circuit, of the substrate and are formed in the penetrating mode, one end of the head streamer lamp penetrates through the third through hole corresponding to the positive terminal B, and the other end of the head streamer lamp penetrates through the corresponding fourth through hole; one end of the tail streamer lamp penetrates through the third through hole corresponding to the negative terminal B, and the other end of the tail streamer lamp penetrates through the corresponding fourth through hole; the two ends of the first branch flow light line lamp and the second branch flow light line lamp respectively penetrate through the pair of fourth through holes.
Preferably, the insulating box is provided with a handle at the top and a support at the bottom.
The utility model at least comprises the following beneficial effects:
the series-parallel connection demonstration teaching aid has the advantages that the flickering simulation current flows by means of the streamer lamp (horse race lamp strip), students can understand the series connection and the parallel connection circuit visually, the abstract concept of the current is understood synchronously, the teaching aid can be used for teaching the series connection and the parallel connection circuit, convenience and simplicity are realized, the current phenomenon is clearly shown to the students, and the simulation phenomenon is more scientific, vivid and interesting.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a schematic structural diagram of a series-parallel connection demonstration teaching aid according to one technical scheme of the utility model;
FIG. 2 is a schematic structural diagram of a series-parallel connection demonstration teaching aid according to one technical scheme of the utility model;
FIG. 3 is a schematic structural diagram of a series-parallel connection demonstration teaching aid according to one technical scheme of the utility model;
FIG. 4 is a schematic circuit diagram of the series circuit according to one embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of a parallel circuit according to one embodiment of the present invention;
FIG. 6 is a schematic circuit diagram of the series circuit according to one embodiment of the present invention;
fig. 7 is a schematic circuit diagram of the parallel circuit according to one embodiment of the present invention.
The reference numerals are specifically: an insulating case 1; a storage space 10; a square frame 11; a substrate 12; a handle 2; a support 3; a series circuit 4; a positive terminal a 40; a negative electrode terminal a 41; a switch A42; a lamp socket A43; a bulb A44; a parallel circuit 5; a positive terminal B50, a negative terminal B51, a switch B52, a lamp holder B53, a bulb B54, a switch C55, a lamp holder C56 and a bulb C57; a streamer lamp 6; a streamer lamp I60; a streamer lamp II 61; a streamer lamp III 62; a streamer lamp IV 63; a head stream light lamp 7; a first branch flow line lamp 70; a second branch flow line lamp 71; a tail stream light lamp 72; a first through-hole 8; a second perforation 80; a third perforation 9; a fourth perforation 90.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or combinations thereof.
As shown in fig. 1-3, the utility model provides a series-parallel connection demonstration teaching aid, comprising:
an insulation box 1, the interior of which forms a storage space 10;
circuit elements provided on the side wall of the insulating case 1 to form a series circuit 4 and a parallel circuit 5;
a streamer lamp 6, which is partially covered on the side wall of the insulating box 1 along the current flowing direction, and a terminal passes through the side wall of the insulating box 1 and is positioned in the storage space 10 so as to simulate the current trend of the series circuit 4 and the parallel circuit 5;
and an electric wire for connecting the circuit elements and the streamer lamp 6.
In the above technical solution, as shown in fig. 1, the insulation box 1 has a storage space 10 correspondingly communicated with the side surface thereof, the side wall of the insulation box 1 is used for installing each circuit element, the actual electrical connection of each circuit element is formed in the storage space 10 through an electric wire, the streamer lamp 6 is a wire with streamer function, the streamer lamp 6 used in the present application is a streamer lamp 6 with a positive connection end (positive electrode end) and a negative connection end (negative electrode end) at the same end, the streamer lamps 6 with the positive electrode end and the negative electrode end at both ends can be used in the same way, the principle of connecting into the circuit is the same, the joint hidden behind the substrate 12 (storage space 10) can be pulled to the corresponding connection place through the cooperation of the electric wire to realize the connection, when the streamer lamp 6 is powered on to work, the streamer lamp 6 emits continuously flashing streamer, the formed streamer effect can be formed for simulating current, in the use process, as shown in fig. 4, for the series circuit 4, the circuit element includes a positive terminal, a negative terminal, a power supply, a switch K3, two lamp sockets, and lamps (a lamp L3 and a lamp L4) corresponding to the lamp sockets, the positive terminal, the switch K3, the two lamp sockets, and the negative terminal are electrically connected in sequence through electric wires, and the power supply is connected with the positive terminal and the negative terminal respectively for supplying power; in fig. 4-7, the solid line part of the description about the streamer lamp 6 is a showing part located outside the side wall of the insulating box 1, the dotted line part is a part hidden in the storage space 10, the streamer lamp 6 comprises two streamer lamp strips, the positive and negative terminals of the streamer lamp strips are respectively arranged at two ends of the streamer lamp, the connection mode is as shown in fig. 4, and after electrification, current reaches the negative terminal from the positive terminal, one of the streamer lamp strips, the switch K3 and the other streamer lamp strip;
for the parallel circuit 5, as shown in fig. 5, the circuit element includes a positive terminal, a negative terminal, a first parallel branch (including a switch K1, a lamp holder, and a lamp L1 corresponding to the lamp holder), the first parallel branch (including a switch K2, a lamp holder, and a lamp L2 corresponding to the lamp holder), the streamer lamp includes 4 strips, which are respectively defined as a streamer lamp i 60, a streamer lamp ii 61, a streamer lamp iii 62, and a streamer lamp iv 63, a positive terminal of the streamer lamp iii 62 is connected to one end of the switch K2 connected to the lamp L2 through an electric wire, the streamer lamp is a streamer lamp strip in which positive and negative terminals are respectively disposed at two ends of the streamer lamp, and the connection mode is as shown in fig. 4, after the switch K1 is powered on, the electric current reaches the negative terminal from the positive terminal, the streamer lamp i 60, the switch K1, the streamer lamp ii 61, and the streamer lamp iii 62; after the switch K2 is electrified, current reaches the negative terminal from the positive terminal, the streamer lamp I60, the streamer lamp IV 63, the switch K2 and the streamer lamp III 62; by adopting the technical scheme, the series-parallel connection demonstration teaching aid simulates the flow of current by means of the flashing of the streamer lamp, so that students can visually understand the series-parallel connection circuit 5 and synchronously understand the abstract concept of the current.
In another technical solution, as shown in fig. 6, the circuit elements for forming the series circuit 4 include a positive terminal a 40, a negative terminal a 41, a power supply, a switch a42, at least one lamp holder a 43, and a bulb a 44 corresponding to the lamp holder a 43, wherein the positive terminal a 40, the switch a42, the at least one lamp holder a 43, and the negative terminal a 41 are electrically connected in sequence through electric wires, and the power supply is connected to the positive terminal a 40 and the negative terminal a 41 respectively for supplying power. As shown in fig. 2, the positive terminal a 40, the negative terminal a 41, the switch a42, and the at least one lamp socket a 43 are all installed on one side of the insulating box 1, as shown in fig. 4 and 6, the bulbs corresponding to the lamp sockets a 43 are installed on the lamp sockets a 43 in a one-to-one correspondence, preferably, two lamp sockets a 43 are provided, and then the corresponding bulbs include a bulb a 441 and a bulb a 442, and specifically, the bulbs are sequentially connected through wires and include: (positive terminal a 40, one end of switch a 42), (the other end of switch a42, the positive terminal of lamp socket a 432), (the negative terminal of lamp socket a 432, the positive terminal of lamp socket a 431), (the negative terminal of lamp socket a 431, negative terminal a 41); with this solution an implementation of the series circuit 4 is provided.
In another technical solution, as shown in fig. 6, the streamer lamp corresponding to the series circuit 4 includes 2 lamps, wherein one lamp simulates the current flowing direction from the positive terminal a 40 to one point of the series circuit 4, and the other lamp simulates the current flowing direction from one point of the series circuit 4 to the positive terminal a 40;
the cathode ends of the 2 streamer lamps are connected with the cathode terminal a 41, and the anode ends of the two streamer lamps are connected with one end (the end connected with the lamp holder a 43) of the switch a42, so that the on/off of the switch a42 respectively controls the on/off of the two streamer lamps. When the switch is closed, current sequentially passes through the positive terminal A40, one end of the switch A42 connected with the positive terminal of the power supply, one end of the switch A42 connected with the lamp holder A43, the lamp holder A43 (bulb A44) and the negative terminal A41 to form a passage, the bulb A44 is on, and synchronously, the current sequentially passes through the positive terminal A40, one end of the switch A42 connected with the positive terminal of the power supply, one end of the switch A42 connected with the lamp holder A43, one of the current ray lamps and the negative terminal A41 to form a passage, wherein one of the current ray lamps is on (forms a flickering current ray); synchronously, the current also sequentially passes through a positive terminal A40, one end of a switch A42 connected with the positive terminal of a power supply, one end of the switch A42 connected with a lamp holder A43, the other streamer lamp and a negative terminal A41 to form a passage, and the other streamer lamp is on (forms a flickering streamer); with this arrangement, an electrical connection of the series circuit 4 of light-transmitting lamps is provided.
In another technical solution, as shown in fig. 1, the insulation box 1 includes a square frame 11 and a substrate 12 covering two sides of the square frame 11, and the series circuit 4 and the parallel circuit 5 are respectively formed on the substrate 12 on one side. In the above technical scheme, square frame 11 is the cuboid frame, and along the uncovered setting in thickness direction's both sides, and base plate 12 specifically can be the PVC board, and after each circuit component and streamer lamp connected, two PVC boards passed through fix with rivet in square frame 11 both sides, adopts this kind of scheme, forms insulating case 1 through a pair of base plate 12 of square frame 11 cooperation, when being convenient for form installation face and storage space 10, both simple to operate.
In another technical solution, as shown in fig. 6, a first through hole 8 is formed through the substrate 12 corresponding to the series circuit 4 at the positive terminal a 40 and the negative terminal a 41, a second through hole 80 is formed through the substrate 12 at one point of the series circuit 4, two ends of one of the flow light lamps corresponding to the series circuit 4 respectively pass through the first through hole 8 and the second through hole 80, and two ends of the other flow light lamp corresponding to the series circuit 4 respectively pass through the other first through hole 8 and the second through hole 80. In the above technical solution, one end of one streamer lamp passes through the first through hole 8 located at the positive terminal a 40, the through end has positive and negative terminals, the negative terminal is connected with the negative terminal a 41 (the part located in the storage space 10), the positive terminal is connected with one end of the switch a42 (the end connected with the bulb a 44) through the wire traction, the other end of the streamer lamp passes through the second through hole 80, the streamer lamp located at the outer side (the display surface) of the substrate 12 extends and is fixed along the corresponding current flowing direction,
one end of the other streamer lamp passes through the first through hole 8 at the negative terminal A41, the through end is provided with a positive terminal and a negative terminal, the negative terminal is connected with the negative terminal A41 (the part positioned in the storage space 10), the positive terminal is connected with one end of a switch A42 (the end connected with the bulb A44) through electric wire traction, the other end of the streamer lamp passes through the second through hole 80, the streamer lamp positioned at the outer side (display surface) of the substrate 12 extends and is fixed along the direction of the corresponding current flow direction, the parts of the two streamer lamps positioned at the outer side of the substrate 12 are arranged along the flow direction of the series circuit 4 in a covering manner, the parts of the streamer lamps positioned at the outer side of the substrate 12 can be fixed by gluing, the current flowing direction of the series circuit 4 is simulated by matching each circuit element with the outer side surface of the substrate 12 by the partially appearing streamer lamp.
In another solution, as shown in fig. 6, the second through hole 80 is hidden between one of the lamp sockets a 43 and the corresponding substrate 12. By adopting the scheme, the current flow direction simulated by the ray lamp is more vivid, and the influence of breakpoints is reduced.
In another technical solution, as shown in fig. 7, the circuit elements for forming the parallel circuit 5 include a positive terminal B50, a negative terminal B51, a switch B52, at least one lamp holder B53, a bulb B54 corresponding to the lamp holder B53, a switch C55, at least one lamp holder C56, a bulb C57 corresponding to the lamp holder C56; the positive terminal B50, the switch B52, the at least one lamp holder B53 and the negative terminal B51 are electrically connected through electric wires in sequence to form a first branch; the positive terminal B50, the switch C55, the at least one lamp holder C56 and the negative terminal B51 are electrically connected through electric wires in sequence to form a second branch; the positive terminal B50 is connected to the positive terminal a 40 through a wire, and the negative terminal B51 is connected to the negative terminal a 41 through a wire, so that the parallel circuit 5 is supplied with power through a power supply. As shown in fig. 3, the positive terminal B50, the negative terminal B51, the switch B52, the at least one lamp holder B53, the switch C55, and the at least one lamp holder C56 are all installed on the substrate 12, and the first branch specifically includes, through wires connected in sequence: (positive terminal B50, one end of switch B52), (the other end of switch B52, the positive terminal of lamp socket B53), (the negative terminal of lamp socket B53, negative terminal B51); the second branch road specifically includes that the electric wire connects gradually: (positive terminal B50, one end of switch C55), (the other end of switch C55, the positive terminal of lamp socket C56), (the negative terminal of lamp socket C56, negative terminal B51); with this solution an implementation of the parallel circuit 5 is provided.
In another technical solution, as shown in fig. 7, in the display circuit located outside the substrate 12, the portions connected to the positive terminal B50 and the negative terminal B51 in the first branch and the second branch are shared; that is, the current is branched after running for a certain distance from the positive pole of the power supply to form two branches, wherein one branch flows to the switch B52, the other branch flows to the switch C55, the current flowing to the switch B52 flows through the bulb B54, the current flowing to the switch C55 flows through the bulb C57, and the two branches flowing through the bulb B54 and the bulb C57 are merged and then flow to the negative terminal;
the streamer lamp corresponding to the parallel circuit 5 comprises 4 streamer lamps, namely a head streamer lamp 7 which simulates the current flowing direction and starts to the branch position along the positive terminal B50, a first branch streamer lamp 70 which simulates the current flowing direction of a first branch positioned between the two branch positions, a second branch streamer lamp 71 which simulates the current flowing direction of a second branch positioned between the two branch positions, and a tail streamer lamp 72 which simulates the current flowing line from the other branch position to the negative terminal B51;
wherein, the negative ends of the 4 streamer lamps are all connected with the negative terminal B51, the positive ends of the head streamer lamp 7 and the tail streamer lamp 72 are divided into two parts which are respectively connected with one end of the switch B52 and one end of the switch C55, the positive end of the first branch streamer lamp 70 is connected with one end of the switch B52, the positive end of the second branch streamer lamp 71 is connected with one end of the switch C55, so that the on/off of the switch B52 controls the on/off of the first branch stream light lamp 70, the on/off of the switch C55 controls the on/off of the second branch stream light lamp 71, when at least one of the switch B52 and the switch C55 is closed, when the head flow line lamp 7 and the tail flow line are lit, and the switch B52 and the switch C55 are both on, the head flow line lamp 7 and the tail flow line are turned off (not operating). In the above-mentioned technical solution,
when the switch B52 is closed, the current sequentially passes through the positive terminal B50, the end of the switch B52 connected with the positive terminal of the power supply, the end of the switch B52 connected with the lamp holder B53, the lamp holder B53 (the lamp bulb B54) and the negative terminal B51 to form a passage, the lamp bulb B54 lights and is synchronous, firstly, the current sequentially passes through the positive terminal B50, the end of the switch B52 connected with the positive terminal of the power supply, the end of the switch B52 connected with the lamp holder B53, the passage formed by the head stream light lamp 7 and the negative terminal B51, secondly, the current sequentially passes through the positive terminal B50, the end of the switch B52 connected with the positive terminal of the power supply, the end of the switch B52 connected with the lamp holder B53, the passage formed by the first branch stream light lamp 70 and the negative terminal B51, and thirdly, the positive terminal B50, the switch B52, the end of the lamp holder B53, the passage formed by the negative terminal B51, and the current sequentially passes through the positive terminal B50, the negative terminal B51, A passage formed by one end of the switch B52 connected with the positive terminal of the power supply, one end of the switch B52 connected with the lamp holder B53, the tail streamer lamp 72 and the negative terminal B51; that is, the head streamer lamp 7, the first branch streamer lamp 70, and the tail streamer lamp 72 are lit simultaneously (form a flickering streamer);
when the switch C55 is closed, the current sequentially passes through the positive terminal B50, the end of the switch B52 connected with the positive terminal of the power supply, the end of the switch B52 connected with the lamp holder C56, the lamp holder C56 (the lamp bulb C57) and the negative terminal B51 to form a passage, the lamp bulb C57 lights and is synchronous, firstly, the current sequentially passes through the positive terminal B50, the end of the switch B52 connected with the positive terminal of the power supply, the end of the switch B52 connected with the lamp holder C56, the passage formed by the head current lamp 7 and the negative terminal B51, secondly, the current sequentially passes through the positive terminal B50, the end of the switch B52 connected with the positive terminal of the power supply, the end of the switch B52 connected with the lamp holder C56, the passage formed by the second branch current lamp 71 and the negative terminal B51, and thirdly, the positive terminal B50, the switch B52, the end of the second branch current lamp holder C56, the passage formed by the negative terminal B51, and finally, the current sequentially passes through the positive terminal B50, the negative terminal B51, A passage formed by one end of the switch B52 connected with a positive terminal of a power supply, one end of the switch B52 connected with the lamp holder C56, the tail streamer lamp 72 and a negative terminal B51; that is, the head streamer lamp 7, the second branch streamer lamp 71, and the tail streamer lamp 72 are simultaneously lighted (forming a flickering streamer);
when the switches B52 and C are both closed, the bulb B54, the bulb C57, the head streamer lamp 7, the first branch streamer lamp 70, the second branch streamer lamp 71 and the tail streamer lamp 72 are simultaneously lighted.
In another technical solution, as shown in fig. 7, a third through hole 9 is formed through the substrate 12 corresponding to the parallel circuit 5 at both the positive terminal B50 and the negative terminal B51 (the third through hole 9 at the positive terminal B50 is denoted as a third through hole 9 i, and the third through hole 9 at the negative terminal B51 is denoted as a third through hole 9 ii), and fourth through holes 90 are formed through the substrate 12 at two branches of the parallel circuit 5 (the fourth through hole 90 corresponding to the positive terminal B50 is denoted as a fourth through hole 90 i, and the fourth through hole 90 corresponding to the negative terminal B51 is denoted as a fourth through hole 90 ii), wherein one end of the head flow light lamp 7 passes through the third through hole 9 corresponding to the positive terminal B50, and the other end passes through the corresponding fourth through hole 90; one end of the tail flow ray lamp 72 passes through the third through hole 9 corresponding to the negative terminal B51, and the other end passes through the corresponding fourth through hole 90; both ends of the first branch flow line lamp 70 and the second branch flow line lamp 71 respectively pass through a pair of fourth through holes 90. In the above-mentioned technical solution, the air conditioner,
one end of the head end streamer lamp penetrates through the third perforation 9I, the penetrating end is provided with a positive terminal and a negative terminal, the negative terminal is connected with the negative terminal B51 (the part positioned in the storage space 10), the positive terminal is respectively connected with one end of the switch B52 (the end connected with the bulb B54) and one end of the switch C55 (the end connected with the bulb C57) through wire traction, the other end of the streamer lamp penetrates through the fourth perforation 90I, and the head end streamer lamp is positioned outside (a display surface) the substrate 12 and extends from the positive terminal B to the fourth perforation 90I;
the fourth through hole 90 ii of the first branch flow ray lamp 70 has a positive terminal and a negative terminal at the through end, the negative terminal is connected with the negative terminal B51 (the part located in the storage space 10), the positive terminal is connected with one end of the switch B52 (the end connected with the bulb B54) by wire traction, the other end of the first branch flow ray lamp 70 passes through the fourth through hole 90 i, the first branch flow ray lamp 70 is located outside (the display surface) the substrate 12, extends from the fourth through hole 90 i to the fourth through hole 90 ii, and sequentially passes through the bulb B54 and the switch B52;
a fourth through hole 90 ii of the second branch flow light lamp 71, a through end of which has positive and negative terminals, the negative terminal is connected to the negative terminal B51 (the portion located in the storage space 10), the positive terminal is connected to one end of the switch C55 (the end connected to the bulb C57) by wire traction, the other end of the second branch flow light lamp 71 passes through the fourth through hole 90 i, the second branch flow light lamp 71 is located outside (the display surface) the substrate 12, extends from the fourth through hole 90 i to the fourth through hole 90 ii, and passes through the bulb C57 and the switch C55 in sequence;
one end of the tail end flow light wire lamp penetrates through the third through hole 9 II, the penetrating end is provided with a positive terminal and a negative terminal, the negative terminal is connected with a negative terminal B51 (a part positioned in the storage space 10), the positive terminal is respectively connected with one end of a switch B52 (one end connected with a bulb B54) and one end of a switch C55 (one end connected with a bulb C57) through wire traction, the other end of the strip flow light wire lamp penetrates through a fourth through hole 90 II, and the tail end flow light wire lamp is positioned on the outer side (display surface) of the substrate 12 and extends from the negative terminal B to the fourth through hole 90 II; in fig. 7, in order to make the circuit appear more clearly, the streamer lamp is a streamer lamp with the positive electrode and the negative electrode at one end, and the connection with the switch end is shown through the other end of the streamer lamp, and it is clear for those skilled in the art to adopt such a scheme by combining the above description, and through the partial display of the streamer lamp, the current flowing direction of the parallel circuit 5 is simulated by matching each circuit element on the outer side of the substrate 12.
In another solution, as shown in fig. 1-3, the insulation box 1 has a handle 2 at the top and a support 3 at the bottom. In the above technical scheme, the support 3 can specifically be located including the interval two at least bracing pieces of direction frame bottom, two bracing pieces set up along 11 thickness directions of square frame, and is further, preferred, the bracing piece is two, two bracing pieces with the rotatable setting in square frame 11 bottom (need provide certain extra power and drive relative rotation between them), follows when two bracing pieces 11 thickness directions set up, can support the vertical setting of insulating case 1, the demonstration of being convenient for, rotate to following when two bracing pieces 11 length directions of square frame set up, portable adopts this kind of scheme, and handle 2's setting portable, and the demonstration operation is convenient for in the setting of support 3.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the series-parallel demonstration teaching aid of the present invention will be apparent to those skilled in the art.
While embodiments of the utility model have been described above, it is not intended to be limited to the details shown, described and illustrated herein, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are readily available to those skilled in the art, and it is not intended to be limited to the details shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.
Claims (10)
1. Series-parallel connection demonstration teaching aid, its characterized in that includes:
an insulating case having a storage space formed therein;
circuit elements provided on the side wall of the insulating box to form a series circuit and a parallel circuit;
the streamer lamp is partially covered on the side wall of the insulating box along the current flowing direction, and the wiring terminal penetrates through the side wall of the insulating box and is positioned in the storage space so as to simulate the current trend of the series circuit and the parallel circuit;
and the electric wire is used for connecting each circuit element and the streamer lamp.
2. The series-parallel connection demonstration teaching aid according to claim 1, wherein the circuit elements for forming the series circuit comprise a positive terminal A, a negative terminal A, a power supply, a switch A, at least one lamp holder A and a bulb A corresponding to the lamp holder A, wherein the positive terminal A, the switch A, the at least one lamp holder A and the negative terminal A are sequentially electrically connected through electric wires, and the power supply is respectively connected with the positive terminal A and the negative terminal A for supplying power.
3. The series-parallel demonstration teaching aid according to claim 2, wherein the streamer lamp corresponding to the series circuit comprises 2 lamps, one of which simulates the current flow direction from the positive terminal a to one point of the series circuit, and the other simulates the current flow direction from one point of the series circuit to the positive terminal a;
the cathode ends of the 2 streamer lamps are connected with the cathode wiring terminal A, and the anode ends of the two streamer lamps are connected with one end of the switch A, so that the switch A is opened/closed to respectively control the on/off of the two streamer lamps.
4. The series-parallel connection demonstration teaching aid according to claim 3, wherein the insulation box comprises a square frame and base plates covering two sides of the square frame, and the series circuit and the parallel circuit are respectively formed on the base plate on one side.
5. A series-parallel demonstration teaching aid according to claim 4 wherein a first through hole is provided through the base plate corresponding to the series circuit at each of the positive terminal A and the negative terminal A, a second through hole is provided through the base plate at one point in the series circuit, the two ends of one of the stream light lamps corresponding to the series circuit are respectively passed through the first through hole and the second through hole, and the two ends of the other stream light lamp corresponding to the series circuit are respectively passed through the other first through hole and the second through hole.
6. A series-parallel demonstration teaching aid according to claim 5 wherein the second aperture is hidden between one of the sockets A and the corresponding base plate.
7. A series-parallel demonstration teaching aid as claimed in claim 4 wherein the circuit elements used to form the parallel circuit comprise a positive terminal B, a negative terminal B, a switch B, at least one socket B, a bulb B corresponding to socket B, a switch C, at least one socket C, a bulb C corresponding to socket C; the positive terminal B, the switch B, the at least one lamp holder B and the negative terminal B are electrically connected through electric wires in sequence to form a first branch; the positive terminal B, the switch C, the at least one lamp holder C and the negative terminal B are electrically connected through electric wires in sequence to form a second branch; the positive terminal B is connected with the positive terminal A through a wire, and the negative terminal B is connected with the negative terminal A through a wire, so that the parallel circuit is powered through a power supply.
8. The series-parallel connection demonstration teaching aid according to claim 7, wherein the first branch and the second branch in the display circuit located outside the substrate are shared by the connection parts of the positive terminal B and the negative terminal B; the streamer lamp corresponding to the parallel circuit comprises 4 streamer lamps, namely a head streamer lamp for simulating the current flowing direction to the branch position from the positive terminal B, a first branch streamer lamp for simulating the current flowing direction of the first branch positioned between the two branch positions, a second branch streamer lamp for simulating the current flowing direction of the second branch positioned between the two branch positions, and a tail streamer lamp for simulating the current flowing line from the other branch position to the negative terminal B;
the cathode ends of the 4 flow light lamps are all connected with the cathode binding post B, the anode ends of the head flow light lamps and the tail flow light lamps are all divided into two parts and are respectively connected with one ends of the switch B and the switch C, the anode end of the first branch flow light lamp is connected with one end of the switch B, the anode end of the second branch flow light lamp is connected with one end of the switch C, so that the on/off of the switch B respectively controls the on/off of the first branch flow light lamp, the on/off of the switch C respectively controls the on/off of the second branch flow light lamp, when at least one of the switch B and the switch C is closed, the head flow light lamp and the tail flow light are twinkling, and when the switch B and the switch C are both opened, the head flow light lamp and the tail flow light are extinguished.
9. The series-parallel connection demonstration teaching aid according to claim 8, wherein a third perforation is formed through the substrate corresponding to the parallel circuit at the positive terminal B and the negative terminal B, and fourth perforations are formed through the substrate at two branches of the parallel circuit, wherein one end of the head streamer lamp penetrates through the third perforation corresponding to the positive terminal B, and the other end of the head streamer lamp penetrates through the corresponding fourth perforations; one end of the tail streamer lamp penetrates through the third through hole corresponding to the negative terminal B, and the other end of the tail streamer lamp penetrates through the corresponding fourth through hole; the two ends of the first branch flow light line lamp and the second branch flow light line lamp respectively penetrate through the pair of fourth through holes.
10. The series-parallel demonstration teaching aid according to claim 4, wherein the top of the insulation box is provided with a handle, and the bottom of the insulation box is provided with a support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202220533587.2U CN217034970U (en) | 2022-03-11 | 2022-03-11 | Series-parallel connection demonstration teaching aid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220533587.2U CN217034970U (en) | 2022-03-11 | 2022-03-11 | Series-parallel connection demonstration teaching aid |
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| Publication Number | Publication Date |
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| CN217034970U true CN217034970U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220533587.2U Active CN217034970U (en) | 2022-03-11 | 2022-03-11 | Series-parallel connection demonstration teaching aid |
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| CN (1) | CN217034970U (en) |
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