Magnetic force generating circuit and oscillating device

Abstract

The utility model discloses a magnetic force generating circuit and swing device, include: controller, magnetic generating coil, switch circuit, the controller output signal is through amplification and frequency selection after through the magnetic force generating coil output to make electric power generation magnetic force. The utility model discloses through the controller namely singlechip to the control of magnetic generating coil, has not used inductance, reduces the consumable and the heating, can reduce the circuit board cost. Still include base, the magnetic force generating circuit is installed on the circuit board, and the mounting plate is installed on the base, and the base is fixedly connected with the support, and the support is connected with the swing bar through the first pivot, and the bottom of swing bar is fixed with the magnet, and the one end of magnet near the base is same with the magnetism of the magnetic generating coil, that is, repulsion. The circuit board of the utility model is fixed on the base, can realize the force of repulsion with swing bar, to make swing bar swing.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic force generating circuit technology, and specifically relates to a magnetic force generating circuit. Background Technology

[0002] A chaotic pendulum is a decorative ornament that swings in a circular motion on a desktop. Existing chaotic pendulum magnetic force generation circuits often use multiple inductors, resulting in a large area occupied on the circuit board. This increases both cost and space usage. For example, CN201761277U provides a "Magnetic Pendulum Device" that uses multiple inductors. Therefore, it is very important to obtain a magnetic force generation circuit and swing device with a simple circuit structure and variable swing. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, this utility model provides a magnetic force generating circuit comprising:

[0004] The controller, the magnetic generating coil electrically connected to the output terminal of the controller via an oscillation circuit and an amplifier circuit, and the switching circuit electrically connected between the amplifier circuit and the controller;

[0005] The controller output signal is amplified and frequency selected, and then output through a magnetic force generating coil to generate magnetic force from electricity.

[0006] Through the above technical solution, this utility model controls the magnetic generating coil through a controller, i.e., a microcontroller, without using an inductor, thus reducing consumables and heat generation, and reducing circuit board costs.

[0007] The amplifier circuit includes an operational amplifier. The output of the controller provides a high-level signal or a low-level signal to the control pin of the operational amplifier to control the operational amplifier to turn it off or on.

[0008] The switching circuit includes a first transistor and a second transistor. The output of the controller is electrically connected to the collector of the first transistor. The emitter of the first transistor is connected to the power supply, and the base is connected to the collector of the second transistor. The base of the second transistor is connected to the input of the operational amplifier. The collector of the first transistor is connected to the controller through a sixth diode and an eighth resistor.

[0009] The emitter of the second transistor is connected to the operational amplifier via a series connection of the fifth diode, the sixth resistor (connected in parallel), and the fourth diode. A fifth capacitor is electrically connected between pins one and five of the operational amplifier.

[0010] The oscillation circuit includes several resistors and several capacitors, so that the controller outputs different frequencies to the magnetic generating coil, so that the magnetic generating coil is intermittently energized to generate magnetic force.

[0011] Through the above technical solution, the microcontroller can control the frequency of the oscillation circuit, thereby controlling the frequency at which the magnetic coil generates magnetism.

[0012] Pin 1 of the operational amplifier is connected to the first resistor via the fourth capacitor, the fourth resistor, the third diode, and the second diode. The first resistor is connected to pin 3. The fourth resistor is grounded. The fourth capacitor is connected to the second diode. Pin 2 is connected to the magnetizing coil via the second resistor. Pin 2 is connected to pin 8 via the third resistor. The magnetizing coil is grounded and connected to the power supply. Pin 8 is connected to the power supply via the second capacitor. Pin 6 is connected to the second capacitor via the third capacitor. Pin 8 is connected to the controller via the ninth resistor. Pin 6 is connected to the controller via the seventh resistor. Pin 8 is connected to the power supply via the seventh diode.

[0013] The magnetic generating coil is connected in parallel with a first diode.

[0014] A swinging device includes the aforementioned magnetic force generating circuit, a base, the magnetic force generating circuit mounted on a circuit board, a mounting plate mounted on the base, a bracket fixedly connected to the base, and a swing arm connected to the bracket via a first rotating shaft. A magnet is fixed to the bottom of the swing arm, and the end of the magnet near the base has the same magnetic field as the magnetic force generated by the magnetic generating coil, i.e., they repel each other. A counterweight is connected to the swing arm via a second rotating shaft, the first rotating shaft being located near the upper end of the swing arm, and the second rotating shaft being located in the middle of the counterweight; under no external force, the second rotating shaft is located above the first rotating shaft. The magnet is located directly above the magnetic generating coil.

[0015] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, reduces the use of traditional inductors, reduces costs, and by fixing the circuit board of this utility model on the base, a force repulsing the pendulum rod can be generated to make the pendulum rod swing. Attached Figure Description

[0016] Figure 1 This is the circuit diagram of this utility model;

[0017] Figure 2 This is a schematic diagram (partial cross-sectional view) of the structure of this utility model in use;

[0018] Figure label:

[0019] U2 controller; 1 oscillation circuit; 2 amplifier circuit; L1 magnetic generating coil; U1 operational amplifier; 3 circuit board; 4 bracket; 4 swing arm; 5 magnet; 6 counterweight rod; 7 first rotating shaft; 8 second rotating shaft. Detailed Implementation

[0020] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0021] Referring to the accompanying drawings, this utility model adopts the following technical solution: This utility model provides a magnetic force generating circuit including:

[0022] The controller U2, the magnetic generating coil L1 electrically connected to the output terminal of the controller U2 via the oscillation circuit 1 and the amplifier circuit 2, and the switching circuit electrically connected between the amplifier circuit 2 and the controller U2;

[0023] The controller U2 output signal is amplified and its frequency is selected before being output through a magnetic force generating coil to generate magnetic force from electricity.

[0024] Through the above technical solution, this utility model controls the magnetic generating coil L1 through the controller U2, i.e., the microcontroller, without using an inductor, reducing consumables and heat generation, and reducing the cost of the circuit board 3.

[0025] The amplifier circuit 2 includes an operational amplifier U1. The output of the controller U2 provides a high-level signal or a low-level signal to the control pin of the operational amplifier U1 to control the operational amplifier U1 to turn it off or on.

[0026] The switching circuit includes a first transistor and a second transistor. The output terminal of the controller U2 is electrically connected to the collector of the first transistor. The emitter of the first transistor is connected to the power supply, and the base is connected to the collector of the second transistor. The base of the second transistor is connected to the input terminal of the operational amplifier U1. The collector of the first transistor is connected to the controller U2 through a sixth diode and an eighth resistor.

[0027] The emitter of the second transistor is connected to operational amplifier U1 via a fifth diode, a sixth resistor in parallel, and a fourth diode, all connected in series. A fifth capacitor is electrically connected between pins one and five of operational amplifier U1.

[0028] The oscillation circuit 1 includes several resistors and several capacitors, so that the controller U2 outputs different frequencies to the magnetic generating coil L1, so that the magnetic generating coil L1 is intermittently energized to generate magnetic force.

[0029] Through the above technical solution, the microcontroller can control the frequency of the oscillation circuit 1 to control the frequency at which the magnetic generating coil L1 generates magnetism.

[0030] Pin 1 of operational amplifier U1 is connected to the first resistor via the fourth capacitor, the fourth resistor, the third diode, and the second diode. The first resistor is connected to pin 3. The fourth resistor is grounded. The fourth capacitor is connected to the second diode. Pin 2 is connected to the magnetic generating coil L1 via the second resistor. Pin 2 is connected to pin 8 via the third resistor. The magnetic generating coil L1 is grounded and connected to the power supply. Pin 8 is connected to the power supply via the second capacitor. Pin 6 is connected to the second capacitor via the third capacitor. Pin 8 is connected to the controller U2 via the ninth resistor. Pin 6 is connected to the controller U2 via the seventh resistor. Pin 8 is connected to the power supply via the seventh diode.

[0031] The magnetic generating coil L1 is connected in parallel with a first diode.

[0032] Figure 1 In the diagram, CN1 represents the connector that connects to the battery.

[0033] A swinging device includes the aforementioned magnetic force generating circuit, a base, the magnetic force generating circuit mounted on a circuit board 3, a mounting plate mounted on the base, a bracket 9 fixedly connected to the base, and a swing rod 4 connected to the bracket 9 via a first rotating shaft 7. A magnet 5 is fixed to the bottom of the swing rod 4, and the end of the magnet 5 near the base has the same magnetic force as the magnetic force generated by the magnetic force generating coil L1, i.e., they repel each other. A counterweight rod 6 is connected to the swing rod 4 via a second rotating shaft 8. The first rotating shaft 7 is located near the upper end of the swing rod 4, and the second rotating shaft 8 is located in the middle of the counterweight rod 6; in the absence of external force, the second rotating shaft 8 is located above the first rotating shaft 7. The magnet 5 is located directly above the magnetic force generating coil L1. The magnet repels the magnetic force generated by the magnetic force generating coil.

[0034] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, reduces the use of traditional inductors, reduces costs, and fixes the circuit board 3 of this utility model on the base to generate a force that repels the swing arm 4, so that the swing arm 4 swings.

[0035] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A magnetic force generating circuit, characterized in that: include: The controller (U2), the magnetic generating coil (L1) electrically connected to the output terminal of the controller (U2) via the oscillation circuit (1) and the amplifier circuit (2), and the switching circuit electrically connected between the amplifier circuit (2) and the controller (U2); The controller (U2) output signal is amplified and frequency selected, and then output through a magnetic force generating coil to generate magnetic force from electricity.

2. The magnetic force generating circuit according to claim 1, characterized in that: The amplifier circuit (2) includes an operational amplifier (U1). The output terminal of the controller (U2) provides a high-level signal or a low-level signal to the control pin of the operational amplifier (U1) to control the operational amplifier (U1) to turn it off or on.

3. The magnetic force generating circuit according to claim 2, characterized in that: The switching circuit includes a first transistor and a second transistor. The output terminal of the controller (U2) is electrically connected to the collector of the first transistor. The emitter of the first transistor is connected to the power supply, and the base is connected to the collector of the second transistor. The base of the second transistor is connected to the input terminal of the operational amplifier (U1).

4. The magnetic force generating circuit according to claim 3, characterized in that: The emitter of the second transistor is connected to the operational amplifier (U1) via the fifth diode, the sixth resistor in parallel, and the fourth diode in series.

5. The magnetic force generating circuit according to claim 1, characterized in that: The oscillation circuit (1) includes several resistors and several capacitors, so that the controller (U2) outputs different frequencies to the magnetic generating coil (L1), so that the magnetic generating coil (L1) is intermittently energized to generate magnetic force.

6. The magnetic force generating circuit according to claim 5, characterized in that: Pin 1 of the operational amplifier (U1) is connected to the first resistor via the fourth capacitor, the fourth resistor, the third diode, and the second diode. The first resistor is connected to pin 3. The fourth resistor is grounded. The fourth capacitor is connected to the second diode. Pin 2 is connected to the magnetic generating coil (L1) via the second resistor. Pin 2 is connected to pin 8 via the third resistor. The magnetic generating coil (L1) is grounded. The magnetic generating coil (L1) is connected to the power supply. Pin 8 is connected to the power supply via the second capacitor. Pin 6 is connected to the second capacitor via the third capacitor. Pin 8 is connected to the controller (U2) via the ninth resistor. Pin 6 is connected to the controller (U2) via the seventh resistor. Pin 8 is connected to the power supply via the seventh diode.

7. A swinging device, characterized in that: The magnetic force generating circuit includes any one of claims 1-6, and further includes a base, the magnetic force generating circuit is mounted on a circuit board (3), a mounting plate is mounted on the base, a bracket (9) is fixedly connected to the base, a swing rod (4) is connected to the bracket (9) through a first rotating shaft (7), a magnet (5) is fixed to the bottom of the swing rod (4), and the end of the magnet (5) near the base has the same magnetism as the magnetic force generated by the magnetic force generating coil (L1), that is, they repel each other.

8. The swinging device according to claim 7, characterized in that: The pendulum (4) is connected to a counterweight (6) via a second pivot (8). The first pivot (7) is located near the upper end of the pendulum (4), and the second pivot (8) is located in the middle of the counterweight (6). Without external force, the second rotating shaft (8) is located above the first rotating shaft (7).

9. The swinging device according to claim 8, characterized in that: The magnet (5) is located directly above the magnetic generating coil (L1).

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