CN217181708U - Science popularization experiment teaching display box of many accuses of circuit principle - Google Patents
Science popularization experiment teaching display box of many accuses of circuit principle Download PDFInfo
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- CN217181708U CN217181708U CN202220393559.5U CN202220393559U CN217181708U CN 217181708 U CN217181708 U CN 217181708U CN 202220393559 U CN202220393559 U CN 202220393559U CN 217181708 U CN217181708 U CN 217181708U
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- 238000010586 diagram Methods 0.000 description 7
- 230000000007 visual effect Effects 0.000 description 2
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001149 cognitive effect Effects 0.000 description 1
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- 230000003923 mental ability Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
A multi-control line principle science popularization experiment teaching display box is characterized in that a circuit principle teaching board is arranged in a box body, a power supply, a display lamp, a first single-pole double-throw switch and a second single-pole double-throw switch are arranged on the circuit principle teaching board, at least one double-pole double-throw switch is arranged between the first single-pole double-throw switch and the second single-pole double-throw switch to form two series circuits, a fixed end binding post of the first single-pole double-throw switch is connected with the power supply, and a fixed end binding post of the second single-pole double-throw switch is connected with the power supply through the display lamp through a lead to form a loop; a life demonstration board with a multi-control circuit is placed above a circuit principle demonstration board, an electric lamp, a first single-switch double-control switch and a second single-switch double-control switch are arranged on the life demonstration board, at least one multi-control switch is arranged between the first single-switch double-control switch and the second single-switch double-control switch to form two series circuits, the first single-switch double-control switch is connected with a power supply, and the second single-switch double-control switch is connected with the power supply through the electric lamp to form a loop.
Description
Technical Field
The utility model relates to a teaching aid field, concretely relates to science popularization experiment teaching display box of many accuse circuit principle.
Background
The multi-control circuit is more and more widely applied in real life, but in the high school physics teaching of common education, the knowledge of many students on the multi-control circuit is very fuzzy, although the control effect which can be achieved by the multi-control circuit can be known from books, the students cannot know how to connect the specific circuits of the multi-control circuit at all, the clear visual knowledge of the multi-control circuit is lacked, especially the principle, structure, purpose and wiring mode of a double-pole double-throw switch in the multi-control circuit are difficult to master important knowledge points for the students in the teaching, however, as the students lack the visual knowledge of the specific connection of the multi-control circuit in the learning process, the specific circuit diagram of the multi-control circuit cannot be drawn, and the teaching link has difficulties. How to let high school students have clear and intuitive understanding to many accuse circuits in the teaching, make the student understand many accuse circuits in depth the reasonable application of double-pole double-throw switch, do not have corresponding teaching aid at present.
Disclosure of Invention
The utility model aims at the not enough that prior art corresponds, provide a science popularization experiment teaching show case of many accuse circuit principle, it can show the live life of many accuse circuits and the circuit principle of many accuse circuits is clear, lets the student clear principle, structure, usage and the mode of connection of cognitive many accuse circuits.
The utility model aims at adopting the following scheme to realize: a science experiment teaching display box based on a multi-control line principle comprises a box body, wherein a circuit principle teaching board of the multi-control line is arranged in the box body, a power supply, a display lamp, a first single-pole double-throw switch and a second single-pole double-throw switch are arranged on the circuit principle teaching board, at least one double-pole double-throw switch is arranged between the first single-pole double-throw switch and the second single-pole double-throw switch, two movable-end binding posts of the first single-pole double-throw switch and two movable-end binding posts of the second single-pole double-throw switch form two series circuits through the double-pole double-throw switch, a fixed end of the first single-pole double-throw switch is connected with the power supply, and a fixed end of the second single-pole double-throw switch is connected with the power supply through a wire and a display lamp to form a loop; the life demonstration board with the multi-control circuit is placed above the circuit principle demonstration board, an electric lamp, a first single-switch double-control switch and a second single-switch double-control switch are arranged on the life demonstration board, at least one multi-control switch is arranged between the first single-switch double-control switch and the second single-switch double-control switch, the first single-switch double-control switch is connected with the second single-switch double-control switch through the multi-control switch to form two series circuits, the first single-switch double-control switch is connected with a power supply, and the second single-switch double-control switch is connected with the power supply through the electric lamp to form a loop.
Preferably, a first fixed end binding post of the double-pole double-throw switch is connected with a first movable end binding post of the first single-pole double-throw switch through a wire, a second fixed end binding post of the double-pole double-throw switch is connected with a second movable end binding post of the first single-pole double-throw switch through a wire, the first and second binding posts of four movable ends of the double-pole double-throw switch correspond to the first pole, the third and fourth binding posts correspond to the second pole, the first and fourth binding posts are connected in parallel to form a first output end, the first movable end binding post is connected with the second movable end binding post through a wire, and the second and third binding posts are connected in parallel to form a second output end, and the second output end is connected with the second movable end binding post of the second single-pole double-throw switch through a wire.
Preferably, the double-pole double-throw switch adopts a plurality of double-pole double-throw switches which are connected in series in sequence, wherein a first output end of a front double-pole double-throw switch is connected with a first fixed end binding post of a rear double-pole double-throw switch through a lead, and a second output end of the front double-pole double-throw switch is connected with a second fixed end binding post of the rear double-pole double-throw switch through a lead.
Preferably, the multi-control switch comprises two fixed end binding posts and four movable end binding posts, a first knife of the multi-control switch corresponds to the first movable end binding post and the second movable end binding post, and a second knife of the multi-control switch corresponds to the third movable end binding post and the fourth movable end binding post.
Preferably, a first fixed terminal of the multi-control switch is connected with a first movable terminal of the first single-open double-control switch through a wire, a second fixed terminal of the multi-control switch is connected with a second movable terminal of the first single-open double-control switch through a wire, wherein the first terminal and the fourth terminal are connected in parallel to form a first output end which is connected with a first movable terminal of the second single-open double-control switch through a wire, and the second terminal and the third terminal are connected in parallel to form a second output end which is connected with a second movable terminal of the second single-open double-control switch through a wire.
Preferably, the multi-control switches are sequentially connected in series by adopting a plurality of multi-control switches, wherein a first output end of a preceding multi-control switch is connected with a first fixed end binding post of a succeeding multi-control switch through a lead, and a second output end of the preceding multi-control switch is connected with a second fixed end binding post of the succeeding multi-control switch through a lead.
Preferably, the power supply arranged on the circuit principle demonstration board is a direct current power supply.
Preferably, the circuit principle demonstration board is fixed in the box body.
Preferably, the circuit principle teaching board is provided with a lamp holder for mounting the display lamp, the life teaching board is provided with a lamp holder for mounting the electric lamp, and the lamp holder is provided with two binding posts for connecting wires respectively.
Preferably, a box cover is arranged on the box body, one side of the box cover is hinged with one side of the box body, and the other side of the box cover is connected with the box body through a lock catch.
The utility model discloses contain following beneficial effect: the teaching box is characterized in that a circuit principle teaching board of a multi-control circuit is arranged in the box body, a power supply, a display lamp, a first single-pole double-throw switch and a second single-pole double-throw switch are arranged on the circuit principle teaching board, at least one double-pole double-throw switch is arranged between the first single-pole double-throw switch and the second single-pole double-throw switch, two movable end binding posts of the first single-pole double-throw switch and two movable end binding posts of the second single-pole double-throw switch form two series circuits through the double-pole double-throw switch, a fixed end binding post of the first single-pole double-throw switch is connected with the power supply, and a fixed end binding post of the second single-pole double-throw switch is connected with the power supply through the display lamp through a wire to form a loop; the life demonstration board with the multi-control circuit is placed above the circuit principle demonstration board, an electric lamp, a first single-switch double-control switch and a second single-switch double-control switch are arranged on the life demonstration board, at least one multi-control switch is arranged between the first single-switch double-control switch and the second single-switch double-control switch, the first single-switch double-control switch is connected with the second single-switch double-control switch through the multi-control switch to form two series circuits, the first single-switch double-control switch is connected with a power supply, and the second single-switch double-control switch is connected with the power supply through the electric lamp to form a loop.
In teaching, the single-switch double-control switch and the multi-control switch on the life teaching board are used for switching the on-off of the two series circuits, so that the display lamp is switched between the on-off states, the electric appliance in the multi-control circuit can be proved, the on-off of the power supply of the electric appliance can be controlled by switching the connection state of any one switch, and students can know the specific application of the multi-control circuit in life.
The circuit principle demonstration board adopts two series circuits formed by a single-pole double-throw switch and a double-pole double-throw switch to supply power to the lamp, and controls the on-off of the power supply of the lamp by switching the states of the switches when demonstrating the principle of students in teaching, so that the students can understand the basic principle of the single-pole double-throw switch and the double-pole double-throw switch in a multi-control circuit and draw a corresponding multi-control circuit schematic diagram according to actual needs, and the innovation consciousness and the manual and mental abilities of the students are cultivated and improved.
Preferably, a first fixed end binding post of the double-pole double-throw switch is connected with a first movable end binding post of the first single-pole double-throw switch through a wire, a second fixed end binding post of the double-pole double-throw switch is connected with a second movable end binding post of the first single-pole double-throw switch through a wire, the first and second binding posts of four movable ends of the double-pole double-throw switch correspond to the first pole, the third and fourth binding posts correspond to the second pole, the first and fourth binding posts are connected in parallel to form a first output end, the first movable end binding post is connected with the second movable end binding post through a wire, and the second and third binding posts are connected in parallel to form a second output end, and the second output end is connected with the second movable end binding post of the second single-pole double-throw switch through a wire. After a single-pole double-throw switch and a double-pole double-throw switch in a multi-control line are connected through a lead according to the connection mode, the switching of the single-pole double-throw switch can select two different circuits, and when one circuit is connected, the connection of the other circuit is disconnected; and four binding posts at the movable end of the double-pole double-throw switch are in cross electric connection, and one circuit can be connected and the other circuit can be disconnected at the same time, so that the function of a multi-control circuit is realized.
Preferably, the double-pole double-throw switch adopts a plurality of double-pole double-throw switches which are connected in series in sequence, wherein a first output end of a front double-pole double-throw switch is connected with a first fixed end binding post of a rear double-pole double-throw switch through a lead, and a second output end of the front double-pole double-throw switch is connected with a second fixed end binding post of the rear double-pole double-throw switch through a lead. Because the number of the double-pole double-throw switches of the multi-control circuit can be multiple, the lamp can be switched between two states of on and off by controlling any switch in the multi-control circuit.
Preferably, the multi-control switch comprises two fixed end binding posts and four movable end binding posts, a first knife of the multi-control switch corresponds to the first movable end binding post and the second movable end binding post, and a second knife of the multi-control switch corresponds to the third movable end binding post and the fourth movable end binding post. The first fixed terminal of the multi-control switch is connected with the first movable terminal of the first single-open double-control switch through a wire, the second fixed terminal of the multi-control switch is connected with the second movable terminal of the first single-open double-control switch through a wire, the first terminal and the fourth terminal are connected in parallel to form a first output end which is connected with the first movable terminal of the second single-open double-control switch through a wire, and the second terminal and the third terminal are connected in parallel to form a second output end which is connected with the second movable terminal of the second single-open double-control switch through a wire. The multi-control switch is matched with the two single-switch double-control switches to form a switch group which adopts three switches to control the display lamp simultaneously.
Preferably, the multi-control switches are sequentially connected in series by adopting a plurality of multi-control switches, wherein a first output end of a preceding multi-control switch is connected with a first fixed end binding post of a succeeding multi-control switch through a lead, and a second output end of the preceding multi-control switch is connected with a second fixed end binding post of the succeeding multi-control switch through a lead. In the multi-control circuit, a plurality of multi-control switches and two single-switch double-control switches form a switch group which adopts a plurality of switches to control the display lamps simultaneously.
Preferably, the power supply arranged on the circuit principle demonstration board is a direct current power supply, and the direct current power supply can provide safe voltage/current for the multi-control line.
Preferably, the circuit principle demonstrating board is fixed in the box, and the circuit principle demonstrating board is prevented from colliding inside the box when the box moves, so that components are damaged.
Preferably, the circuit principle demonstrating board is provided with a lamp holder for mounting the display lamp, the life demonstrating board is provided with a lamp holder for mounting the electric lamp, and the lamp holders are respectively provided with two binding posts for connecting wires, so that the display lamp/the electric lamp can be conveniently mounted/dismounted.
Preferably, be equipped with the case lid on the box, case lid one side is articulated with box one side, and the case lid opposite side passes through the hasp with the box to be connected, can directly open the hasp when teaching, opens the case lid, demonstrates the inside life demonstrating board/circuit principle demonstrating board of box.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a diagram of an embodiment of a circuit principle teaching board of the present invention;
fig. 3 is a diagram of another embodiment of the circuit principle teaching board of the present invention.
Detailed Description
As shown in fig. 1 to 3, the scientific experiment teaching demonstration box based on the multi-control line principle comprises a box body 1, wherein a circuit principle teaching board 2 of the multi-control line is arranged in the box body 1, and the circuit principle teaching board 2 is fixed in the box body 1. The circuit principle teaching board 2 is provided with a power supply 3, a display lamp 4, a first single-pole double-throw switch 5 and a second single-pole double-throw switch 6, and the power supply 3 arranged on the circuit principle teaching board 2 is a direct-current power supply. At least one double-pole double-throw switch 7 is arranged between the first single-pole double-throw switch 5 and the second single-pole double-throw switch 6, two series circuits are formed between two movable end binding posts of the first single-pole double-throw switch 5 and two movable end binding posts of the second single-pole double-throw switch 6 through the double-pole double-throw switch 7, a fixed end binding post of the first single-pole double-throw switch 5 is connected with the power supply 3, and a fixed end binding post of the second single-pole double-throw switch 6 is connected with the power supply 3 through a display lamp 4 through a lead to form a loop; a life teaching board 8 with a multi-control circuit is placed above the circuit principle teaching board 2, an electric lamp 9, a first single-switch double-control switch 10 and a second single-switch double-control switch 11 are arranged on the life teaching board 8, at least one multi-control switch 12 is arranged between the first single-switch double-control switch 10 and the second single-switch double-control switch 11, the first single-switch double-control switch 10 is connected with the second single-switch double-control switch 11 through the multi-control switch 12 to form two series circuits, the first single-switch double-control switch 10 is connected with a power supply 3, and the second single-switch double-control switch 11 is connected with the power supply 3 through the electric lamp 9 to form a loop. The multi-control switch 12 comprises two fixed end binding posts and four movable end binding posts, a first knife of the multi-control switch 12 corresponds to the first movable end binding post and the second movable end binding post, and a second knife of the multi-control switch corresponds to the third movable end binding post and the fourth movable end binding post. The first fixed terminal of the multi-control switch 12 is connected with the first movable terminal of the first single-switch double-control switch 10 through a wire, the second fixed terminal of the multi-control switch 12 is connected with the second movable terminal of the first single-switch double-control switch 10 through a wire, wherein the first terminal and the fourth terminal are connected in parallel to form a first output end which is connected with the first movable terminal of the second single-switch double-control switch 11 through a wire, and the second terminal and the third terminal are connected in parallel to form a second output end which is connected with the second movable terminal of the second single-switch double-control switch 11 through a wire.
The circuit principle teaching board 2 is provided with a lamp holder for mounting the display lamp 4, the life teaching board 8 is provided with a lamp holder for mounting the electric lamp 9, the lamp holders are respectively provided with two binding posts for connecting wires, and when the display lamp 4/the electric lamp 9 is damaged, the display lamp 4/the electric lamp 9 can be conveniently mounted/dismounted.
In this embodiment, the multi-control switch 12 adopts two multi-control switches 12 connected in series in sequence, wherein a first output end of a preceding multi-control switch 12 is connected to a first fixed end terminal of a succeeding multi-control switch 12 through a wire, and a second output end is connected to a second fixed end terminal of the succeeding multi-control switch 12 through a wire.
When teaching is carried out, the box cover 13 is opened at first, the on-off of the two series circuits is switched through the single-switch double-control switch and the multi-control switch on the life teaching board 8, the display lamp 4 is switched between the on-off states, so that the power on-off of the electric appliance can be controlled by switching the connection state of any one switch, and students can know the specific application of the multi-control circuit in life.
Example 1 as shown in fig. 2, the first fixed terminal L3 of the double pole double throw switch 7 is connected to the first movable terminal L1 of the first single pole double throw switch 5 by a wire, the second fixed terminal L4 of the double-pole double-throw switch 7 is connected with the second movable terminal L2 of the first single-pole double-throw switch 5 through a lead, the first binding post L3-A and the second binding post L3-B of the four movable ends of the double-pole double-throw switch 7 correspond to a first pole, the third binding post L4-A and the fourth binding post L4-B correspond to a second pole, the first binding post L3-A and the fourth binding post L4-B are connected in parallel to form a first output end K1 which is connected with a first movable end binding post L1 of the second single-pole double-throw switch 6 through a lead, and the second binding post L3-B and the third binding post L4-A are connected in parallel to form a second output end K2 which is connected with a second movable end binding post L2 of the second single-pole double-throw switch 6 through a lead.
When the principle of multi-control lines is demonstrated for students in teaching through circuit switching of the circuit principle teaching board 2, the movable end of a first single-pole double-throw switch 5 on the circuit principle teaching board 2 is contacted with a contact on a first movable end binding post L1 of the first single-pole double-throw switch 5, the movable end of a second single-pole double-throw switch 6 is contacted with a contact on a second movable end binding post L2 of the second single-pole double-throw switch 6, the first movable end of a double-pole double-throw switch 7 is contacted with a contact on a first binding post L3-A of the movable end of the double-pole double-throw switch 7, the second movable end is contacted with a contact on a third binding post L4-A of the movable end of the double-pole double-throw switch 7, the line between the display lamp 4 and the power supply 3 is connected, and the display lamp 4 is bright; the state of any switch in the multi-control circuit is switched, the display lamp 4 is turned off, namely the on-off of the power supply of the lamp is controlled by switching the states of all the switches, so that students can understand the basic principles of the single-pole double-throw switch and the double-pole double-throw switch in the multi-control circuit and draw a corresponding multi-control circuit schematic diagram according to actual needs.
The on-off of the multi-control circuit can be controlled by controlling the switching state of any switch, so that students can understand that a plurality of double-pole double-throw switches used in the multi-control circuit can be adopted, and the students can draw circuit diagrams and connect the circuit diagrams with the object circuit according to the principle and actual requirements.
The portable box is characterized in that a box cover 13 is arranged on the box body 1, one side of the box cover 13 is hinged to one side of the box body 1, the other side of the box cover 13 is connected with the box body 1 through a lock catch, and a lifting handle is further arranged on the other side of the box body 1 to facilitate carrying.
The above is only the preferred embodiment of the present invention, and is not used for limiting the present invention, the technical personnel in the field are not departing from the spirit of the present invention, right the present invention is modified to fall into the protection scope of the present invention.
Claims (10)
1. The utility model provides a science popularization experiment teaching show case of many accuse circuit principle which characterized in that: comprises a box body (1), a circuit principle teaching board (2) with a plurality of control circuits is arranged in the box body (1), the circuit principle demonstrating board (2) is provided with a power supply (3), a display lamp (4), a first single-pole double-throw switch (5) and a second single-pole double-throw switch (6), at least one double-pole double-throw switch (7) is arranged between the first single-pole double-throw switch (5) and the second single-pole double-throw switch (6), two series circuits are formed between two movable-end binding posts of the first single-pole double-throw switch (5) and two movable-end binding posts of the second single-pole double-throw switch (6) through the double-pole double-throw switch (7), a binding post at the fixed end of the first single-pole double-throw switch (5) is connected with a power supply (3), a binding post at the fixed end of the second single-pole double-throw switch (6) is connected with a power supply (3) through a wire and a display lamp (4) to form a loop; a life teaching board (8) with a multi-control circuit is placed above the circuit principle teaching board (2), an electric lamp (9), a first single-switch double-control switch (10) and a second single-switch double-control switch (11) are arranged on the life teaching board (8), at least one multi-control switch (12) is arranged between the first single-switch double-control switch (10) and the second single-switch double-control switch (11), the first single-switch double-control switch (10) is connected with the second single-switch double-control switch (11) through the multi-control switch (12) to form two series circuits, the first single-switch double-control switch (10) is connected with a power supply (3), and the second single-switch double-control switch (11) is connected with the power supply (3) through the electric lamp (9) to form a loop.
2. The scientific popularization experiment teaching display box of multi-control line principle of claim 1, characterized in that: the first fixed end binding post of the double-pole double-throw switch (7) is connected with a first movable end binding post of the first single-pole double-throw switch (5) through a wire, a second fixed end binding post of the double-pole double-throw switch (7) is connected with a second movable end binding post of the first single-pole double-throw switch (5) through a wire, the first binding post and the second binding post of four movable ends of the double-pole double-throw switch (7) correspond to a first pole, the third binding post and the fourth binding post correspond to a second pole, the first binding post and the fourth binding post are connected in parallel to form a first movable end binding post, the first output end of the first movable end binding post is connected with the second single-pole double-throw switch (6) through a wire, and the second binding post and the third binding post are connected in parallel to form a second output end, and the second output end of the second movable end binding post is connected with the second single-pole double-throw switch (6) through a wire.
3. The scientific popularization experiment teaching display box of multi-control line principle of claim 2, characterized in that: the double-pole double-throw switch (7) is characterized in that the double-pole double-throw switches (7) are sequentially connected in series, wherein the first output end of the front double-pole double-throw switch (7) is connected with the first fixed end binding post of the rear double-pole double-throw switch (7) through a lead, and the second output end of the front double-pole double-throw switch (7) is connected with the second fixed end binding post of the rear double-pole double-throw switch (7) through a lead.
4. The scientific popularization experiment teaching display box of multi-control line principle of claim 1, characterized in that: the multi-control switch (12) comprises two fixed end binding posts and four movable end binding posts, a first knife of the multi-control switch (12) corresponds to the first movable end binding post and the second movable end binding post, and a second knife corresponds to the third movable end binding post and the fourth movable end binding post.
5. The scientific popularization experiment teaching display box of multi-control line principle of claim 4, characterized in that: the first fixed end binding post of the multi-control switch (12) is connected with the first movable end binding post of the first single-switch double-control switch (10) through a lead, the second fixed end binding post of the multi-control switch (12) is connected with the second movable end binding post of the first single-switch double-control switch (10) through a lead, wherein the first binding post and the fourth binding post are connected in parallel to form a first output end which is connected with the first movable end binding post of the second single-switch double-control switch (11) through a lead, and the second binding post and the third binding post are connected in parallel to form a second output end which is connected with the second movable end binding post of the second single-switch double-control switch (11) through a lead.
6. The scientific popularization experiment teaching display box of multi-control line principle of claim 5, characterized in that: the multi-control switch (12) is characterized in that the multi-control switches (12) are sequentially connected in series, wherein a first output end of a front multi-control switch (12) is connected with a first fixed end wiring terminal of a rear multi-control switch (12) through a lead, and a second output end of the front multi-control switch (12) is connected with a second fixed end wiring terminal of the rear multi-control switch (12) through a lead.
7. The scientific popularization experiment teaching display box of multi-control line principle of claim 1, characterized in that: the power supply (3) arranged on the circuit principle demonstration board (2) is a direct current power supply.
8. The scientific popularization experiment teaching display box of multi-control line principle of claim 1, characterized in that: the circuit principle demonstration board (2) is fixed in the box body (1).
9. The scientific popularization experiment teaching display box of multi-control line principle of claim 1, characterized in that: the circuit principle teaching board (2) is provided with a lamp holder for mounting the display lamp (4), the life teaching board (8) is provided with a lamp holder for mounting the electric lamp (9), and the lamp holder is provided with two binding posts which are respectively used for connecting wires.
10. The scientific popularization experiment teaching display box of multi-control line principle of claim 1, characterized in that: the box is characterized in that a box cover (13) is arranged on the box body (1), one side of the box cover (13) is hinged to one side of the box body (1), and the other side of the box cover (13) is connected with the box body (1) through a lock catch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220393559.5U CN217181708U (en) | 2022-02-25 | 2022-02-25 | Science popularization experiment teaching display box of many accuses of circuit principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220393559.5U CN217181708U (en) | 2022-02-25 | 2022-02-25 | Science popularization experiment teaching display box of many accuses of circuit principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217181708U true CN217181708U (en) | 2022-08-12 |
Family
ID=82738695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220393559.5U Expired - Fee Related CN217181708U (en) | 2022-02-25 | 2022-02-25 | Science popularization experiment teaching display box of many accuses of circuit principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217181708U (en) |
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2022
- 2022-02-25 CN CN202220393559.5U patent/CN217181708U/en not_active Expired - Fee Related
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