CN1160275A

CN1160275A - Non-inductive coil

Info

Publication number: CN1160275A
Application number: CN 96119048
Authority: CN
Inventors: 陈坚胜
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-18
Filing date: 1996-03-18
Publication date: 1997-09-24
Anticipated expiration: 2016-03-18
Also published as: CN1056245C

Abstract

A non-inductance coil features that a conducting line is folded at its center, two halves are merged into one, and the double line is used to wind the coil in clocknwise or anticlockwise mode with the internal coil diameter geater than the length of coil. Said coil can effectively filter out external and internal induced signals to ensure the normal transmission of effective signal, so having high anti-interference power.

Description

Noninductive coil

A kind of noninductive coil relates to the variation of electric elements.

In general circuit, regular meeting is provided with some passive components because of the needs of sensor circuit, and inductance coil is use always a kind of, as transformer, induction coil, magnetic core coil ... or the like.Because these devices all can not accomplish close coupling, in side circuit, still have partly signal therefore " leakages " go out circuit, the branch road on next door is caused induced interference signal, that is to say that can produce clutter responds to, thereby influenced the transmission of normal signal.

Purpose of the present invention is to provide a kind of coil, can suppress the generation of these induced interference signal effectively, eliminates the influence of these clutters to circuit.

The present invention implements like this, and said noninductive coil L a section lead headtotail, forms by (or counter-clockwise) coiling clockwise simultaneously from folding section a, the internal diameter h that wherein makes this coil greater than this coil around after length 1.

Below in conjunction with accompanying drawing in detail structure of the present invention and use are described in detail.

Fig. 1 is the schematic diagram of noninductive coil of the present invention;

Fig. 2 is the noninductive coil schematic diagram that has skeleton;

Fig. 3 is the noninductive coil schematic diagram that directly is wound on the loudspeaker iron core;

Fig. 4 is that noninductive coil is the circuit connection diagram of loudspeaker in load;

Fig. 5 is the schematic diagram that the loudspeaker two ends all are connected to noninductive coil;

Fig. 6 is the noninductive coil schematic diagram on the transformer;

Fig. 7 is that noninductive coil is connected on the circuit diagram on the transformer circuit;

Fig. 8 is the schematic diagram that the transformer secondary output two ends all are connected to noninductive coil;

Fig. 9 is the primary and secondary schematic diagram that all is connected to noninductive coil of transformer;

Figure 10 is the noninductive coil schematic diagram on the E type skeleton;

Figure 11 be the electrical equipment setting place the band skeleton noninductive coil on schematic diagram.

As shown in Figure 1, the said noninductive coil of the present invention is with section lead doubling end to end, and folding section a (or counterclockwise) coiling simultaneously clockwise, when coiling, the internal diameter h that should guarantee this coil L gets final product greater than the length 1 of this coil.

As shown in Figure 2, the said noninductive coil of the present invention, also can be with behind the section lead headtotail, folding section a is fixed on the skeleton b of a circle, (or counterclockwise) two-wire is wound on the outer of circular skeleton 2 together then clockwise, treats the length 1 of coil L ' get final product less than the internal diameter h ' of the skeleton b that is depended on.At this, the material of this skeleton b can be nonmetallic materials such as glass, plastics, pottery, plank ... or the like, can be metal material such as copper, iron, aluminium, stainless steel etc. also, influence is all little for noninductive coil.

Because noninductive coil of the present invention is used for sensor circuit, and a lot of inductance or coil itself are arranged also in these circuit, therefore, the said noninductive coil L of the present invention makes like this, as shown in Figure 3, can directly be wound on the lead after the doubling on the iron core of various loudspeaker, be to guarantee the good loop length 1 of institute's coiling " less than the diameter h of loudspeaker iron core c " equally.The loudspeaker of this band noninductive coil L because the buffer action of noninductive coil L is arranged, when the signal of carrying clutter secretly passes through, are filtered by reverse conflict of noninductive coil L, guarantee and improved the tonequality of loudspeaker.In side circuit, as shown in Figure 4, be the signal that the prime audio-amplifying circuit is sent here, at first insert noninductive coil L ₁An end 1, the other end 2 is inserted the R of loudspeaker loads _LOn, and loudspeaker R _LThe other end directly be access to another output d of prime audio-amplifying circuit.If will increase isolation effect, can respectively connect a noninductive coil L at the signal two ends that the prime audio-amplifying circuit is sent here ₁, L ₂, connection and aforementioned symmetry get final product.As shown in Figure 5.

In like manner, as shown in Figure 6, the said noninductive coil L of the present invention can also directly be wound on clockwise the lead after the doubling (or counterclockwise) outside of transformer B.And in transformer circuit used, a primary coil L end just that noninductive coil L can be serially connected in transformer B as shown in Figure 7 also can be as shown in Figure 8, two noninductive coil L ₁, L ₂Be serially connected in the two ends of the primary coil of transformer B respectively; If expect better isolation effect, can also be as shown in Figure 9, respectively at the primary and secondary noninductive coil L that all is connected to of transformer ₁, L ₂, L ₃, L ₄, circuit effects will be better like this.

For the transformer of E sections core, best winding method should be as shown in figure 10, directly on the outside of E sections core D, will guarantee the internal diameter 1 of the length 1 of coil L less than E sections core D to the lead after the doubling equally.

Can directly be placed on electric equipment on the dull and stereotyped skeleton b that is wound with noninductive coil L in some cases, then the two ends of noninductive coil are serially connected in the input of this electric equipment, as shown in figure 11, can place audio amplifier F the top of dull and stereotyped skeleton b, then the

end points

1,2 of noninductive coil is concatenated on the terminated line terminal of audio amplifier.

The noninductive coil that said structure is made according to the present invention, because volume is changeable, its inductionless feature particularly, make it to be widely used in the various electric equipments, the improper induced signal that filtering is sent into by external circuit or sensing element itself is sent plays effectively to the jamproof effect of noise signal effectively.

Claims

1, a kind of noninductive coil is characterized in that a lead headtotail, and (a) makes the length (h) of the internal diameter (1) of this coil greater than coil after wrapping simultaneously by clockwise coiling from the folding section.

2,, it is characterized in that said coil (L) can be wound on an internal diameter h ' greater than on the round skeleton (b) of coil L length according to the said noninductive coil of claim 1.

3, according to claim 1 or 2 said noninductive coils, its feature also can the counter-clockwise direction coiling at this coil L.

4,, it is characterized in that said noninductive coil L also can directly be wound on the outside of sensing device according to the said noninductive coil of claim 1.

5,, it is characterized in that said skeleton (b) can make with nonmetallic materials according to the said noninductive coil of claim 2.

6,, it is characterized in that said skeleton (b) also can make with metal material according to the said noninductive coil of claim 2.