CN202816234U

CN202816234U - Transformer working principle demonstration device

Info

Publication number: CN202816234U
Application number: CN 201220421693
Authority: CN
Inventors: 毛向东
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-24
Filing date: 2012-08-24
Publication date: 2013-03-20
Anticipated expiration: 2022-08-24

Abstract

The utility model relates to a physical teaching aid, particularly to a transformer working principle demonstration device. The transformer working principle demonstration device comprises a battery case (1), a switch I (2), a switch II (3), a switch III (4), a switch IV (5), a switch V (6), a closed iron core I (7), a closed iron core II (8), a closed iron core III (9), a closed iron core IV (10), a voltmeter (11), and a pedestal (12), and is characterized in that: the battery case (1) is sequentially connected with the switch I (2); the closed iron core IV (10) and the switch II (3) are connected in series and then are connected with the switch I (2) in parallel; the closed iron core III (9) and the switch III (4) are connected in series and then are connected with the switch I (2) in parallel; the closed iron core II (8) and the switch IV (5) are connected in series and then are connected with the switch I (2) in parallel; the closed iron core I (7) and the switch V (6) are connected in series and then are connected with the switch I (2) in parallel; and the voltmeter (11) is connected with the switch I (2) in parallel.

Description

A kind of transformer working principle apparatus for demonstrating

Technical field

The utility model relates to a kind of physical teaching aid, specifically a kind of transformer working principle apparatus for demonstrating.

Background technology

Transformer is to utilize the principle of electromagnetic induction to change the device of alternating voltage, main member is primary coil, secondary coil and iron core (magnetic core), transformer working principle is an important content in the physics teaching in secondary school, how to allow the understanding of student to transformer, especially to the variation of the transformer number of turn, how to occur boosting and the problem of step-down has more deep understanding, it is the purpose that the teacher lectures and tests, therefore, Physical Experiment in the middle school physical curriculum and the demonstration of relevant knowledge are to carry out the important auxiliary link of physics teaching, at present, the apparatus for demonstrating of transformer working principle is less in the middle school physical experiment, mainly be that the teacher passes through to draw, demonstrate for classmates, even have teacher and explain for making student's profound understanding access own body language, or directly take transformer to allow the student see that teacher says, make the knowledge of transformer working principle can't allow student image, intuitively, interesting understands and grasp, sometimes can be subjected on the contrary the give lessons misleading of mode of teacher, the student is understood has increased difficulty, the teacher occurs and constantly made great efforts explanation, the student lacks the problem of listening more muddled and more muddled, therefore, the teacher is arranged for making the student better, deep rational learning content, convenient study, the teacher is by changing in the mode of giving lessons, with lantern slide form give lessons, to reach good teaching efficiency, although picture is lively, image, but student's understanding and this part content of grasp transformer working principle are still existed difficulty, can't reach cultivation student's observation and analysis ability and the purpose of the ability that working knowledge is solved a problem.

Summary of the invention

For the problem of above-mentioned existence, the utility model provides a kind of transformer working principle apparatus for demonstrating, has solved the problem that the student can vivid, directly perceived, interesting grasp understands transformer working principle knowledge.

The utility model is achieved through the following technical solutions for achieving the above object:

A kind of transformer working principle apparatus for demonstrating, comprise battery case 1, switch I 2, switch II 3, switch III 4, switch IV 5, switch V 6, iron core-closed I 7, iron core-closed II 8, iron core-closed III 9, iron core-closed IV 10, voltage table 11, base 12, it is characterized in that, base 12 tops arrange respectively battery case 1, switch I 2, switch II 3, switch III 4, switch IV 5, switch V 6, iron core-closed I 7, iron core-closed II 8, iron core-closed III 9, iron core-closed IV 10, voltage table 11, the base 12 interior connection wires that arrange, battery case 1 and switch I 2 are linked in sequence by wire, be connected in parallel on the switch I 2 after iron core-closed IV 10 and 3 series connection of switch II, be connected in parallel on the switch I 2 after iron core-closed III 9 and 4 series connection of switch III, be connected in parallel on the switch I 2 after iron core-closed II 8 and 5 series connection of switch IV, be connected in parallel on the switch I 2 after iron core-closed I 7 and 6 series connection of switch V, voltage table 11 is connected in parallel on the switch I 2.

The utility model is by form in parallel, iron core-closed I 7, iron core-closed II 8, iron core-closed III 9, iron core-closed IV 10 are by its four kinds different number of turn windings, consist of series loop with voltage table 11 respectively, the performance transformer boosts and reduces pressure, by comparative interpretation greatly step-up transformer of secondary coil turn ratio primary coil is described, secondary coil turn ratio primary coil is negative boosting transformer less, realizes experiment purpose.

The beneficial effects of the utility model are: easy to use, simple in structure, visual in image, the base 12 interior connection wires that arrange avoid base 12 mixed and disorderly, avoid wire in experimentation from drop impact experiment of device, be beneficial to more profound understanding of student, make experiment improve interest, strengthened student's manipulative ability, having cultivated student's observation and analysis ability and the ability that working knowledge is solved a problem, is a kind of physical teaching aid of being convenient to promote.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is circuit diagram of the present utility model.

Wherein, 1. battery case, 2. switch I, 3. switch II, 4. switch III, 5. switch IV, 6. switch V, 7. iron core-closed I, 8. iron core-closed II, 9. iron core-closed III, 10. iron core-closed IV, 11. voltage tables, 12. bases.

Embodiment

A kind of transformer working principle apparatus for demonstrating as shown in the figure, comprise battery case 1, switch I 2, switch II 3, switch III 4, switch IV 5, switch V 6, iron core-closed I 7, iron core-closed II 8, iron core-closed III 9, iron core-closed IV 10, voltage table 11, base 12, described a kind of transformer working principle apparatus for demonstrating, base 12 tops arrange respectively battery case 1, switch I 2, switch II 3, switch III 4, switch IV 5, switch V 6, iron core-closed I 7, iron core-closed II 8, iron core-closed III 9, iron core-closed IV 10, voltage table 11, the base 12 interior connection wires that arrange, battery case 1 and switch I 2 are linked in sequence by wire, be connected in parallel on the switch I 2 after iron core-closed IV 10 and 3 series connection of switch II, be connected in parallel on the switch I 2 after iron core-closed III 9 and 4 series connection of switch III, be connected in parallel on the switch I 2 after iron core-closed II 8 and 5 series connection of switch IV, be connected in parallel on the switch I 2 after iron core-closed I 7 and 6 series connection of switch V, voltage table 11 is connected in parallel on the switch I 2.

The utility model in use, by powering at battery case 1 placing battery, Closing Switch II 3, make iron core-closed IV 10, voltage table 11 consists of series circuit, Closing Switch III 4, make iron core-closed III 9, voltage table 11 consists of series circuit, Closing Switch IV 5, make iron core-closed II 8, voltage table 11 consists of series circuit, Closing Switch V 6, make iron core-closed I 7, voltage table 11 consists of series circuit, respectively take iron core-closed III 9 and iron core-closed IV 10 as one group, the secondary coil number of turn is changed from small to big, the elementary necklace number of turn is identical, by connecting respectively with the variation of reading on the voltage table 11, carry out greatly step-up transformer of verification experimental verification secondary coil turn ratio primary coil, take iron core-closed II 8 and iron core-closed I 7 as one group, the secondary coil number of turn is identical, the elementary necklace number of turn is changed from small to big and is all large than the secondary coil number of turn, secondary coil turn ratio primary coil is negative boosting transformer less, interesting strong, battery case 1 is convenient to placing battery, easy to use, simple in structure, visual in image, be beneficial to more profound understanding of student, having solved the teacher because there not being suitable demonstration teaching aid to make the student understand hard problem, cultivated student's observation and analysis ability and the ability that working knowledge is solved a problem, is a kind of physical teaching aid of being convenient to promote.

Claims

1. transformer working principle apparatus for demonstrating, comprise battery case (1), switch I (2), switch II (3), switch III (4), switch IV (5), switch V (6), iron core-closed I (7), iron core-closed II (8), iron core-closed III (9), iron core-closed IV (10), voltage table (11), base (12), it is characterized in that, base (12) top arranges respectively battery case (1), switch I (2), switch II (3), switch III (4), switch IV (5), switch V (6), iron core-closed I (7), iron core-closed II (8), iron core-closed III (9), iron core-closed IV (10), voltage table (11), base arranges the connection wire in (12), and battery case (1) is linked in sequence by wire with switch I (2).

2. described a kind of transformer working principle apparatus for demonstrating according to claim 1 is characterized in that, is connected in parallel on the switch I (2) after iron core-closed IV (10) and switch II (3) series connection.

3. described a kind of transformer working principle apparatus for demonstrating according to claim 1 is characterized in that, is connected in parallel on the switch I (2) after iron core-closed III (9) and switch III (4) series connection.

4. described a kind of transformer working principle apparatus for demonstrating according to claim 1 is characterized in that, is connected in parallel on the switch I (2) after iron core-closed II (8) and switch IV (5) series connection.

5. described a kind of transformer working principle apparatus for demonstrating according to claim 1 is characterized in that, is connected in parallel on the switch I (2) after iron core-closed I (7) and switch V (6) series connection.

6. described a kind of transformer working principle apparatus for demonstrating according to claim 1 is characterized in that voltage table (11) is connected in parallel on the switch I (2).