JPS61125103A - Surge noise absorber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention has low voltage levels and surges (induced lightning, surges due to switching of inductive loads, etc.) that enter between lines such as power lines and signal lines, and between lines and ground. The invention relates to surge noise absorbers for suppressing noise that causes equipment malfunctions and noise in television receivers, radio receivers, etc.

2. Description of the Related Art Conventionally, this type of surge and noise absorber has been constructed by connecting individual parts, as shown in FIG. In the figure, 26 is a ceramic dielectric element with non-linear resistance characteristics, which protects electronic equipment from abnormal voltages such as induced lightning that enters between lines and between lines and ground, and eliminates noise that causes equipment malfunction. It works to absorb. Reference numeral 27 denotes an inductance element, which serves as a current limiting element that limits surge current and as an element that blocks noise of high frequency components.

Recently, a surge noise absorber shown in FIG. 5 has been considered as an attempt to completely integrate this structure (Japanese Utility Model Application Publication No. 18747/1983). In the figure, 29 is a dielectric body, 30 is a chip inductance, and 31 is a connecting portion thereof.

Problems to be Solved by the Invention The conventional method shown in FIG. 4, in which individual parts are connected by IJ-wires, etc. to form a surge noise absorber, requires a large installation space and is difficult to assemble. There are problems such as an increase in the number of man-hours, and there is also a problem that line-to-line inductance occurs due to the connecting lead wires, which impedes surge and noise absorption characteristics.

The surge/noise absorber shown in FIG. 5 has a problem in that the inductance as a surge current limiting element and a high frequency component noise blocking element cannot be made very large.The present invention solves these problems. The purpose is to provide a compact, single-component, high-performance surge/noise absorber.

Means for Solving the Problems In order to solve these problems, the present invention provides spiral electrodes on the surface, the ends of which are located on end faces parallel to each other, and which are perpendicular to the end faces. The non-linear resistor element is formed by using the formed rectangular plate-shaped magnetic, magnetic element and a non-linear resistor element having electrodes on two opposing surfaces or a dielectric element having non-linear resistance characteristics. One electrode of the dielectric elements is electrically connected to each other, and one electrode of each two magnetic elements is connected to the other electrode, and the connection surface between the nonlinear resistor elements or the dielectric elements is Lead wires are drawn out from the other electrodes of the four magnetic elements, resulting in a structure having six terminals.

Function: With this configuration, miniaturization, single componentization, and high performance can be achieved.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described using FIG. 81 and FIG.

FIG. 1 is a perspective view of a surge noise absorber according to an embodiment of the present invention, and FIG. 2 is a bottom view thereof.

In the figure, numerals 1 and 4 are square plate-shaped ceramic dielectric elements each having voltage-dependent nonlinear resistance characteristics, and electrodes 2 and 3 and electrodes 6 and 6 are formed on two parallel surfaces of each element. The electrode 2 of the ceramic dielectric element 1 and the electrode 6 of the ceramic dielectric 4 are electrically connected by an external terminal lead wire 21 interposed therebetween. 7,8
, 9 and 10 are rectangular plate-shaped ferrite magnetic elements having end portions on two parallel end faces, extending from said end faces to a plane perpendicular thereto, and having ferrite magnetic elements 7 and 8 on these faces. , 9, 10, and has spiral electrodes 11, 12, 13°14. 15 is a lead wire for electrically connecting the electrode 3 of the ceramic dielectric element 1 and the electrodes 11 and 12 of the magnetic elements 7 and 8. 16 is a lead wire, which connects the ceramic dielectric element 4
The electrode 6 is electrically connected to the electrodes 13 and 14 of the magnetic elements 9 and 10. 1 completed.

18, 19, 20 are lead wires as external terminals, and each electrode 11, 12° 13.1 of the magnetic elements 7, 8, 9, 10
4, respectively. 21 is a lead wire as an external terminal, and as mentioned above, the ceramic dielectric element 1,
4 electrodes 2 and 6.

Note that the ceramic dielectric elements 1 and 4 and the magnetic elements 7 and 8
, 9.10 are integrated using an adhesive and further coated with resin, although not shown.

Lead wire 17.1 of the surge/noise absorber with the above structure
Connect 9 to the power line side and the signal line side, and connect lead wire 18,
20'ii Connect to the protected equipment side, and connect lead #
When connected to the 21t ground terminal, the electrical equivalent circuit is as shown in FIG. Magnetic elements 7, 8, 9, 10
Inductance components 7', 8', 9' due to
, 10' is for the high frequency component of surge e-noise,
Combined with the limiting voltage characteristics and noise suppression characteristics of the ceramic dielectric element 1゜2, which exhibits current limiting and blocking effects and has non-linear resistance characteristics, surge and noise absorption characteristics are enhanced.
Ru. Moreover, this inductance is 7/, B/
, g/.

1σ has a larger value than that of the conventional product shown in FIG. 6 because it is formed by the ferrite magnetic elements 7, 8, 9° 10 having spiral electrodes 11, 12, 13° 14. Since the input and output lead wires are integrated on the main body and have a closed structure, the inductance between the wires caused by the connecting lead wires is much smaller than when individual parts are connected, which improves the characteristics. , a surge/noise absorber that is effective against surges and noises that enter equipment between lines and between lines and ground can be obtained.

Effects of the Invention As is clear from the above explanation, the surge noise absorber of the present invention uses a non-linear resistor element or a non-linear resistor element because the inductance is formed by a magnetic material having spirally formed electrodes. Combined with the characteristics of the dielectric element having linear resistance characteristics, it is possible to effectively absorb surges and noise.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the surge noise absorber according to the present invention, FIG. 2 is a bottom view thereof, and FIG. 3 is an electrical equivalent circuit diagram thereof. FIG. 4 and FIG. 6 are diagrams each showing the configuration of a conventional surge noise absorber. 1.4... Ceramic dielectric element, 2, 3, 5
゜6... Electrode, 7, 8, 9, 10...
Ferrite magnetic element, 11.12, 13.14...
... Electrode, 15.16 ... Lead wire, 17,1
8,19゜20.21...Lead wire for external terminal. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] One electrode of two square plate-shaped voltage-dependent nonlinear resistor elements or two dielectric elements having voltage-dependent nonlinear resistance having electrodes on two opposing surfaces is electrically connected, and the other electrode is electrically connected to each other. each has an end on two opposing end faces;
Electrically connecting the electrodes on one end surface of two magnetic elements each having a spiral electrode formed on a plane perpendicular to the end surface, and the electrode on the other end surface of the magnetic element. and a connecting portion between electrodes of the nonlinear resistor element or the dielectric element as external connection terminals.