CN218733898U

CN218733898U - Single-stage common mode rejection circuit

Info

Publication number: CN218733898U
Application number: CN202223017074.5U
Authority: CN
Inventors: 陈训祈; 李仲汗
Original assignee: Shenzhen Dili Technology Co ltd
Current assignee: Shenzhen Dili Technology Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-03-24
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses a single-stage common mode suppression circuit relates to cell-phone charger technical field, the power distribution box comprises a block, the operation chamber has been seted up to the inside of block, be provided with the PCB board in the operation chamber, be provided with control circuit in the PCB board, be provided with CX1 electric capacity and CM1 common mode inductance among the control circuit to CX1 electric capacity and CM1 common mode inductance are established ties each other. The utility model discloses added the suppression circuit on original circuit, avoided traditional equipment to receive the influence of electromagnetism disturbance easily, guarantee the normal use function of equipment, improve equipment's result of use and service quality.

Description

Single-stage common mode rejection circuit

Technical Field

The utility model relates to a cell-phone charger technical field, in particular to single-stage common mode suppression circuit.

Background

The mobile phone charger is also named as a mobile phone adapter, and the mobile phone adapter is actually composed of a stable power supply and necessary control circuits such as constant current, voltage limitation, time limitation and the like, wherein the output parameters marked on the original charger are as follows: for example, the output of 5.0V/1A and the output of 5.0V/1500mA-11200 are related parameters of an internal stabilized voltage supply.

The applicant finds that a Chinese patent discloses a 'mobile phone charger', the publication (announcement) number of which is 'CN 207926223U', the patent mainly comprises a main body, a main stop and a limiting block, the top of the main body is provided with a groove, the main stop is arranged in the groove, the middle of the main stop is provided with a charging hole, the side edges of the charging hole of the main stop are respectively provided with a limiting groove, and the limiting block is arranged in the limiting groove, so that the mobile phone can be supported and placed, and the placing problem of the mobile phone during charging is solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a single-stage common mode suppression circuit to solve the traditional charger that provides in the above-mentioned background art in the use, inside control panel carries out the use in, needs inside circuit steady operation, but the circuit in the control panel in the conventional equipment can receive the problem of electromagnetism disturbance when the operation, influences the normal use function of equipment, just so needs the problem of the normal use function of single-stage common mode suppression circuit assurance equipment.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a single-stage common mode suppression circuit, includes the block, the operation chamber has been seted up to the inside of block, be provided with the PCB board in the operation chamber, be provided with control circuit in the PCB board, be provided with CX1 electric capacity and CM1 common mode inductance among the control circuit to CX1 electric capacity and CM1 common mode inductance establish ties each other, have added suppression circuit on original circuit, avoid traditional equipment to receive the influence of electromagnetism disturbance easily, guarantee the normal use function of equipment, improve equipment's result of use and use quality.

Preferably, the model of CX1 capacitor is 0.1uF/275V AC, and the model of CM1 common mode inductor is 100 muH.

Preferably, the block is made of polycarbonate, and the polycarbonate is weak acid resistant, weak base resistant, neutral oil resistant, ultraviolet light resistant and strong base resistant.

Preferably, the containing grooves are formed in the front side and the rear side of the left surface of the block body, and the connecting plate bodies are connected to the inside of the containing grooves in a rotating mode.

Preferably, the two connecting plate bodies are made of copper-based alloy, and the copper-based alloy is formed by adding a certain amount of other elements, so that the copper alloy is moderate in strength, easy to process, fatigue-resistant, attractive in color and luster, good in electric conductivity, heat conductivity and corrosion resistance, and is an important branch in heavy nonferrous metal materials, the copper alloy is widely used in various industrial departments, the yield of the copper alloy is only inferior to that of steel and aluminum, and the copper alloy is the third major alloy category in metal materials.

Preferably, the surface of one side of each of the two connecting plate bodies is provided with a connecting port.

Preferably, the right surface of the block is provided with a wiring port.

The utility model discloses a technological effect and advantage:

1. through setting up block, operation chamber, PCB board, this equipment has added suppression circuit on original circuit, avoids traditional equipment to receive the influence of electromagnetism harassment easily, guarantees the normal use function of equipment, improves the result of use and the use quality of equipment.

2. Through setting up CX1 electric capacity, CM1 common mode inductance, block, guarantee the anti-electromagnetic effect of equipment, guarantee the result of use and the service quality of equipment, improve the intensity and the result of use on surface, improve the usability of equipment.

3. Through setting up the block, accomodating groove, connection plate body, connector, wiring port, guarantee the basic service function of equipment, make things convenient for equipment to accomodate, increase the result of use of equipment, increase the convenient performance of use of equipment, improve equipment suitability.

Drawings

Fig. 1 is a schematic view of the overall front cross-sectional structure of the present invention.

Fig. 2 is a schematic diagram of the circuit diagram structure of the PCB board of the present invention.

Fig. 3 is a schematic diagram of the block side structure of the present invention.

Fig. 4 is a schematic view of the overall three-dimensional structure of the present invention.

In the figure: 1. a block body; 2. an operating chamber; 3. a PCB board; 4. a receiving groove; 5. connecting the plate bodies; 6. a connecting port; 7. and a wiring port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a single-stage common mode suppression circuit as shown in fig. 1-4, including block 1, operation chamber 2 has been seted up to block 1's inside, is provided with PCB board 3 in operation chamber 2, is provided with control circuit in the PCB board 3, is provided with CX1 electric capacity and CM1 common mode inductance among the control circuit to CX1 electric capacity and CM1 common mode inductance establish ties each other, has added suppression circuit on original circuit, avoids traditional equipment to receive the influence of electromagnetic disturbance easily, guarantees the normal use function of equipment, improve equipment's result of use and use quality.

As shown in fig. 1, the model of CX1 capacitor is 0.1uF/275V AC, the model of CM1 common mode inductor is 100 μ H, and the material of the bulk 1 is polycarbonate, which is also called PC plastic; the aliphatic polycarbonate and the aliphatic-aromatic polycarbonate are limited in application in engineering plastics due to low mechanical properties, so that the anti-electromagnetic effect of equipment is ensured, the use effect and the use quality of the equipment are ensured, the surface strength and the use effect are improved, and the usability of the equipment is improved.

As shown in fig. 1 and 3, both sides have all been seted up around the 1 left surface of block and have been accomodate groove 4, two inside of accomodating groove 4 all rotate and are connected with connecting plate body 5, the equal copper base alloy of the material of two connecting plate bodies 5, wiring mouth 6 has all been seted up on one side surface of two connecting plate bodies 5, the right surface of block 1 is provided with wiring port 7, guarantee the basic service function of equipment, make things convenient for equipment to accomodate, increase the result of use of equipment, increase the convenient and fast performance of use of equipment, improve equipment suitability.

The utility model discloses the theory of operation: the PCB 3 and the connecting plate body 5 in the equipment can be directly connected through the electric wire, the normal use function of the equipment cannot be influenced, the accommodating groove 4 in the equipment can accommodate the connecting plate body 5 in the process that the connecting plate body 5 is not used, the space occupation of the connecting plate body 5 is avoided, when the connecting plate body 5 is not convenient to be connected with a power supply, the connecting plate body 5 can be connected with the electric wire through the wiring port 6 for use, and the applicability of the equipment is improved;

CX1 capacitance and CM1 common mode inductance are added to a circuit in a PCB (printed circuit board) 3 in equipment to form a single-stage EMC common mode rejection circuit, CX1 and CM1 parameters are adjusted through a control function of the PCB 3, the circuit can present the maximum impedance at a frequency point where electromagnetic disturbance exceeds the standard, and therefore electromagnetic disturbance outward conduction and radiation are inhibited, the requirement of electromagnetic compatibility certification is met, the PCB 3 is the prior art, and the prior art is not described in a too much way.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A single-stage common-mode rejection circuit comprising a block (1), characterized in that: operation chamber (2) have been seted up to the inside of block (1), be provided with PCB board (3) in operation chamber (2), be provided with control circuit in PCB board (3), be provided with CX1 electric capacity and CM1 common mode inductance among the control circuit to CX1 electric capacity and CM1 common mode inductance are established ties each other.

2. A single-stage common-mode rejection circuit according to claim 1, wherein: the model of CX1 electric capacity is 0.1uF/275V AC, the model of CM1 common mode inductance is 100 mu H.

3. A single stage common mode rejection circuit as claimed in claim 1 wherein: the block body (1) is made of polycarbonate.

4. A single stage common mode rejection circuit as claimed in claim 1 wherein: the storage groove (4) have all been seted up to both sides around block (1) left surface, two the inside of storing groove (4) all rotates and is connected with connecting plate body (5).

5. A single-stage common-mode rejection circuit according to claim 4, wherein: the two connecting plate bodies (5) are made of copper-based alloy.

6. A single-stage common-mode rejection circuit according to claim 4, wherein: and one side surface of each of the two connecting plate bodies (5) is provided with a connecting port (6).

7. A single stage common mode rejection circuit as claimed in claim 1 wherein: the right surface of the block body (1) is provided with a wiring port (7).