Common mode choke coil and manufacturing method thereof
A technology of common mode choke coil and manufacturing method, applied in the direction of inductor/transformer/magnet manufacturing, transformer/inductor coil/winding/connection, electrical components, etc., can solve the problems of reduced circuit anti-interference, circuit malfunction, etc. , to achieve the effects of improving anti-interference, suppressing mode conversion, and suppressing radiated noise
Active Publication Date: 2017-08-15
MURATA MFG CO LTD
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Furthermore, in a differential transmission circuit using a common mode choke coil, the common mode signal generated by the mode conversion becomes radiated noise, and the differential mode signal generated by the mode conversion causes malfunction of the circuit
In other words, in the conventional common mode choke coil, there is a problem that radiation noise is generated or the immunity of the circuit is lowered.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] (Refer to the structure of the common mode choke coil figure 1 as well as figure 2 )
[0025] A common mode choke coil 1 according to an embodiment will be described with reference to the drawings. Hereinafter, the direction in which the central axis of the winding core portion 14 extends is defined as the x-axis direction. In addition, when viewed from the x-axis direction, the direction along the long side of the flange portion 16 is defined as the y-axis direction, and the direction along the short side of the flange portion 16 is defined as the z-axis direction. In addition, the x-axis, y-axis, and z-axis are orthogonal to each other.
[0026] Such as figure 1 As shown, the common mode choke coil 1 includes a core 12 , windings 20 and 21 , external electrodes 22 to 25 , and a plate-shaped core 50 .
[0027] The core body 12 is made of, for example, ferrite, alumina, or other materials, and includes a winding core portion 14 and flange portions 16 and 18 .
[...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention provides a common mode choke coil capable of suppressing radiated noise and improving the noise resistance of a circuit, and a manufacturing method thereof. A common mode choke coil (1) includes: a core having a winding core (14) extending in the x-axis direction and including a region (α) and a region (γ); a winding (20) wound around the winding core (14); and a winding (21) wound around the winding core (14) in parallel with the winding (20). The area (α) is from the end (A) of the winding (20) in contact with the winding core (14) to the position (B), and the area (γ) is from the end of the winding (20) in contact with the winding core (14) (D) to position (C). The winding ( 20 ) is located on the negative side in the x-axis direction with respect to the winding ( 21 ) wound at the same number of turns in the region (α). In addition, the coil ( 20 ) is located on the positive side in the x-axis direction with respect to the coil ( 21 ) wound in the same number of turns in the region (γ).
Description
technical field [0001] The present invention relates to a common mode choke coil and a manufacturing method thereof. Background technique [0002] As a conventional common mode choke coil, the common mode choke coil described in patent document 1 is known. In such a conventional common mode choke coil, when a signal passes through the common mode choke coil, a part of the differential mode signal is converted into a common mode signal, and a part of the common mode signal is converted into a differential mode signal ( Hereinafter, it is called mode conversion). Furthermore, in a differential transmission circuit using a common mode choke coil, a common mode signal generated by mode conversion becomes radiated noise, and a differential mode signal generated by mode conversion causes malfunction of the circuit. In other words, conventional common mode choke coils have problems of generating radiation noise or reducing the immunity of circuits. [0003] Patent Document 1: Ja...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01F17/04H01F27/30H01F41/066
CPCH01F27/2823H01F17/06H01F19/04Y10T29/49071
Inventor 神户勇贵平井真哉
Owner MURATA MFG CO LTD