Electromagnet capable of eliminating residual magnetism

Abstract

The electromagnet comprises a main switch, a first capacitor and a delay switch, the main switch is electrically connected with the electromagnet, the main switch is connected with the electromagnet in series, the first capacitor is electrically connected with the main switch and the electromagnet, the first capacitor is connected with a diode in series, and the delay switch is electrically connected with the main switch. The delay switch is electrically connected between the first capacitor and the diode, the other end of the diode is connected between the main switch and the diode, the main switch is electrically connected with a power supply, and the other end of the power supply is electrically connected with the electromagnet; when the main switch is closed, the electromagnet is magnetized to work and attract, when the main switch is instantly disconnected from a power supply, the electromagnet can generate reverse electromotive energy, voltage and current, the electromotive energy is absorbed by the capacitor Ca through the diode Da, and after the whole electromotive energy is completely absorbed, the electromagnet is reversely discharged after the delay switch Kb is closed, a reverse magnetic field is generated, and the electromagnet is electrified. And the residual magnetism elimination work is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnet demagnetization, and particularly to an electromagnet for eliminating residual magnetism of an electromagnet. Background Technique

[0002] An electromagnet is a device that generates electromagnetic force when energized. A conductive winding matching its power is wound outside the iron core, and this current-carrying coil has magnetism like a magnet. In daily life, electromagnet products are indispensable. However, due to the generation of residual magnetism during the long-term use of electromagnets, the electromagnets cannot work properly, causing many inconveniences. Therefore, a technical solution is needed to solve the problem of residual magnetism of electromagnets. Content of the Utility Model

[0003] The purpose of the utility model is to provide an electromagnet for eliminating residual magnetism of an electromagnet, so as to solve the problems put forward in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: An electromagnet for eliminating residual magnetism of an electromagnet, including a main switch, the main switch is electrically connected to an electromagnet, and the main switch is connected in series with the electromagnet;

[0005] A first capacitor, the first capacitor is electrically connected to the main switch and the electromagnet, and the first capacitor is connected in series with a diode;

[0006] A delay switch, the delay switch is electrically connected between the first capacitor and the diode, and the other end of the diode is connected between the main switch and the diode;

[0007] The main switch is electrically connected to a power supply, and the other end of the power supply is electrically connected to the electromagnet. The power supply provides electrical energy for the residual magnetism of the electromagnet.

[0008] Further, the delay switch is electrically connected to a second capacitor, the second capacitor is electrically connected to a second resistor, and a first resistor is electrically connected between the second resistor and the power supply.

[0009] Further, the delay switch is electrically connected to a second resistor, the second resistor is electrically connected to a second capacitor, and a first resistor is electrically connected between the second capacitor and the main switch.

[0010] Compared with the prior art, the beneficial effect of the utility model is that when the main switch is closed, the electromagnet is magnetized and attracted. When the main switch instantaneously disconnects the power supply, the electromagnet will generate a reverse electromotive potential, generating voltage and current. This electromotive potential is absorbed by the capacitor Ca through the diode. When the entire potential energy is absorbed, after the delay switch Kb is closed, it discharges reversely to the electromagnet, generating a reverse magnetic field to complete the work of eliminating residual magnetism. Description of the Drawings

[0011] Figure 1 Circuit diagram of Embodiment 1 of the present utility model;

[0012] Figure 2 Circuit diagram of Embodiment 2 of the present utility model;

[0013] Figure 3 Circuit diagram of Embodiment 3 of the present utility model;

[0014] Figure 4 Circuit diagram of Embodiment 4 of the present utility model;

[0015] Figure 5 Circuit diagram of Embodiment 5 of the present utility model.

[0016] In the figure: 1. Main switch; 2. Power supply; 3. Delay switch; 4. Diode; 5. First capacitor; 6. Electromagnet; 7. Second capacitor; 8. First resistor; 9. Second resistor.

[0017] Main switch: Ka; Power supply: POW; Delay switch: Kb; Diode: Da; First capacitor: Ca; Electromagnet: LN; Second capacitor: Cb; First resistor: R1; First resistor: R2. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0019] Please refer to Figure 1 , the present utility model provides a technical solution: An electromagnet for eliminating residual magnetism of an electromagnet, including a main switch 1, the main switch 1 is electrically connected to an electromagnet 6, and the main switch 1 is in series with the electromagnet 6;

[0020] A first capacitor 5, the first capacitor 5 is electrically connected to the main switch 1 and the electromagnet 6, and the first capacitor 5 is in series with a diode 4;

[0021] A delay switch 3, the delay switch 3 is electrically connected between the first capacitor 5 and the diode 4, and the other end of the diode 4 is connected between the main switch 1 and the diode 4; the main switch 1 is electrically connected to a power supply 2, and the other end of the power supply 2 is electrically connected to the electromagnet 6.

[0022] Specifically, when in use, the main switch 1 is closed, and the power supply 2 supplies power to the electromagnet 6. The electromagnet 6 starts to work after being magnetized and attracts. When the main switch 1 instantaneously disconnects the connection between the power supply 2 and the electromagnet 6, the electromagnet 6 will generate a reverse electro-potential energy, generating a voltage and current. This electro-potential energy is absorbed by the first capacitor 5 through the diode 4. After the entire electro-potential energy is absorbed, after the delay switch 3 is closed, it discharges reversely to the electromagnet 6, generating a reverse magnetic field to complete the work of residual magnetism elimination. Embodiment

[0023] Please refer to Figure 2 , the present utility model provides a technical solution: an electromagnet for eliminating residual magnetism of an electromagnet, including a main switch 1, the main switch 1 is electrically connected to an electromagnet 6, and the main switch 1 is in series with the electromagnet 6;

[0024] A first capacitor 5, the first capacitor 5 is electrically connected to the main switch 1 and the electromagnet 6, and the first capacitor 5 is in series with a diode 4;

[0025] A delay switch 3, the delay switch 3 is electrically connected between the first capacitor 5 and the diode 4, and the other end of the diode 4 is connected between the main switch 1 and the diode 4; the main switch 1 is electrically connected to a power supply 2, and the other end of the power supply 2 is electrically connected to the electromagnet 6.

[0026] One of the actual use schematic diagrams, the NPN transistor structure principle. The main switch 1 is closed, and the power supply 2 supplies power to the electromagnet 6. The electromagnet 6 starts to work after being magnetized and attracts. When the main switch 1 instantaneously disconnects the connection between the power supply 2 and the electromagnet 6, the electromagnet 6 will generate a reverse electro-potential energy, generating a voltage and current. This electro-potential energy is absorbed by the first capacitor 5 and the second capacitor 7 through the diode 4. The first resistor 8 and the second resistor 9 share the load to avoid damage to the first capacitor 5 and the second capacitor 7. After the entire electro-potential energy is absorbed, after the delay switch 3 is closed, it discharges reversely to the electromagnet 6, generating a reverse magnetic field to complete the work of residual magnetism elimination. Embodiment

[0027] Please refer to Figure 3 , the present utility model provides a technical solution: an electromagnet for eliminating residual magnetism of an electromagnet, including a main switch 1, the main switch 1 is electrically connected to an electromagnet 6, and the main switch 1 is in series with the electromagnet 6;

[0028] A first capacitor 5, the first capacitor 5 is electrically connected to the main switch 1 and the electromagnet 6, and the first capacitor 5 is in series with a diode 4;

[0029] A delay switch 3, the delay switch 3 is electrically connected between the first capacitor 5 and the diode 4, and the other end of the diode 4 is connected between the main switch 1 and the diode 4; the main switch 1 is electrically connected to a power supply 2, and the other end of the power supply 2 is electrically connected to the electromagnet 6.

[0030] One of the actual use schematic diagrams, the structural principle of the N-channel MOS transistor, as Figure 3 shown, in the MOS transistor state, the diode 4 can be not used. When the main switch 1 is closed, the power supply 2 supplies power to the electromagnet 6, and the electromagnet 6 starts to work after being magnetized and attracts. When the main switch 1 instantaneously disconnects the connection between the power supply 2 and the electromagnet 6, the electromagnet 6 will generate a reverse electromotive potential, generating voltage and current. This electromotive potential is absorbed by the first capacitor 5 and the second capacitor 7 through the diode 4. The first resistor 8 and the second resistor 9 share the load to avoid damage to the first capacitor 5 and the second capacitor 7. After the entire potential energy is absorbed, after the delay switch 3 is closed, it discharges reversely to the electromagnet 6, generating a reverse magnetic field to complete the residual magnetism elimination work. Embodiment

[0031] Please refer to Figure 4 , the present utility model provides a technical solution: an electromagnet for eliminating residual magnetism of an electromagnet, including a main switch 1, the main switch 1 is electrically connected to an electromagnet 6, and the main switch 1 is in series with the electromagnet 6;

[0032] A first capacitor 5, the first capacitor 5 is electrically connected to the main switch 1 and the electromagnet 6, and the first capacitor 5 is in series with a diode 4;

[0033] A delay switch 3, the delay switch 3 is electrically connected between the first capacitor 5 and the diode 4, and the other end of the diode 4 is connected between the main switch 1 and the diode 4; the main switch 1 is electrically connected to a power supply 2, and the other end of the power supply 2 is electrically connected to the electromagnet 6.

[0034] One of the actual use schematic diagrams, the structural principle of the PNP transistor. When the main switch 1 is closed, the power supply 2 supplies power to the electromagnet 6, and the electromagnet 6 starts to work after being magnetized and attracts. When the main switch 1 instantaneously disconnects the connection between the power supply 2 and the electromagnet 6, the electromagnet 6 will generate a reverse electromotive potential, generating voltage and current. This electromotive potential is absorbed by the first capacitor 5 and the second capacitor 7 through the diode 4. The first resistor 8 and the second resistor 9 share the load to avoid damage to the first capacitor 5 and the second capacitor 7. After the entire potential energy is absorbed, after the delay switch 3 is closed, it discharges reversely to the electromagnet 6, generating a reverse magnetic field to complete the residual magnetism elimination work. Embodiment

[0035] Please refer to Figure 5 , the present utility model provides a technical solution: an electromagnet for eliminating residual magnetism of an electromagnet, including a main switch 1, the main switch 1 is electrically connected to an electromagnet 6, and the main switch 1 is in series with the electromagnet 6;

[0036] A first capacitor 5, the first capacitor 5 is electrically connected to the main switch 1 and the electromagnet 6, and the first capacitor 5 is in series with a diode 4;

[0037] A delay switch 3, the delay switch 3 is electrically connected between the first capacitor 5 and the diode 4, and the other end of the diode 4 is connected between the main switch 1 and the diode 4; the main switch 1 is electrically connected to a power supply 2, and the other end of the power supply 2 is electrically connected to the electromagnet 6.

[0038] One of the actual use schematic diagrams, the structural principle of the P-channel MOS transistor, as Figure 5 shown, in the MOS transistor state, the diode 4 can be omitted. When the main switch 1 is closed, the power supply 2 supplies power to the electromagnet 6, and the electromagnet 6 starts to work and magnetize and attract. When the main switch 1 instantaneously disconnects the connection between the power supply 2 and the electromagnet 6, the electromagnet 6 will generate a reverse electromotive potential, generating voltage and current. This electromotive potential is absorbed by the first capacitor 5 and the second capacitor 7 through the diode 4. The first resistor 8 and the second resistor 9 share the load to avoid damage to the first capacitor 5 and the second capacitor 7. When the entire potential energy is absorbed, after the delay switch 3 is closed, it discharges reversely to the electromagnet 6, generating a reverse magnetic field to complete the residual magnetic elimination work.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnet for eliminating residual magnetism of an electromagnet, characterized in that, Comprising: A main switch (1), the main switch (1) is electrically connected to an electromagnet (6), and the main switch (1) is in series with the electromagnet (6); A first capacitor (5), the first capacitor (5) is electrically connected to the main switch (1) and the electromagnet (6), and the first capacitor (5) is in series with a diode (4); A delay switch (3), the delay switch (3) is electrically connected between the first capacitor (5) and the diode (4), and the other end of the diode (4) is connected between the main switch (1) and the diode (4).

2. An electromagnet for eliminating residual magnetism of an electromagnet according to claim 1, characterized in that: The main switch (1) is electrically connected to a power supply (2), and the other end of the power supply (2) is electrically connected to the electromagnet (6).

3. An electromagnet for eliminating residual magnetism of an electromagnet according to claim 2, characterized in that: The delay switch (3) is electrically connected to a second capacitor (7), the second capacitor (7) is electrically connected to a second resistor (9), and a first resistor (8) is electrically connected between the second resistor (9) and the power supply (2).

4. An electromagnet for eliminating residual magnetism of an electromagnet according to claim 3, characterized in that: The delay switch (3) is electrically connected to a second resistor (9), the second resistor (9) is electrically connected to a second capacitor (7), and a first resistor (8) is electrically connected between the second capacitor (7) and the main switch (1).

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