CN1056245C

CN1056245C - Non-inductive coil

Info

Publication number: CN1056245C
Application number: CN96119048A
Authority: CN
Inventors: 陈坚胜
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-18
Filing date: 1996-03-18
Publication date: 2000-09-06
Anticipated expiration: 2016-03-18
Also published as: CN1160275A

Abstract

The present invention relates to a non-inductive coil. The head part and the tail part of a conducting wire are connected, and the non-inductive coil is formed by simultaneously winding the non-inductive coil clockwise (or anticlockwise) from a folded part; in the winding, the inner diameter of the coil is guaranteed to be larger than the length of the coil. The non-inductive coil of the present invention can be used for efficiently filtering abnormal induction signals loaded from an external circuit or abnormal induction signals emitted from proper induction elements in a circuit by being arranged on various electrical devices so as to ensure the regular transmission of effective signals and perform the function of the efficient interference rejection of clutter signals.

Description

Noninductive coil

A kind of noninductive coil relates to the design 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, still have in actual applications 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, and these induced interference signal that can suppress in the foregoing circuit effectively to be produced are eliminated the influence of these induced interference signal clutters to circuit.

The present invention implements like this, and said noninductive coil L is section lead doubling end to end, carries out coiling in the outside of para-electric magnetic induction device simultaneously from folding section a, and is connected in series use with the electromagnetic induction device that is depended on.

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 electrical equipment be arranged at the band skeleton noninductive coil on schematic diagram.

As shown in Figure 1, the said noninductive coil of the present invention is section lead doubling end to end, carries out coiling in the outside of para-electric magnetic induction device simultaneously from folding section a, and is connected in series use with the electromagnetic induction device that is depended on.When coiling, should guarantee the length l of the internal diameter h of this coil L greater than this coil.

As shown in Figure 2, the said noninductive coil of the present invention, also can be with behind the section lead headtotail, on the outside of folding section a along a circular skeleton b of Motionless electromagnetic sensing device, clockwise then (or counterclockwise), two-wire was wound on the outer of circular skeleton 2 together, and this coil should be wound on the garden type skeleton b of an internal diameter h ' greater than coil 1 ' length.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 can make like this, as shown in Figure 3, with section lead doubling end to end, lead after the doubling directly is wound on the iron core C of loudspeaker from folding section a end simultaneously, one of them end points 1 is connected in series with an end of the former voice coil of these loudspeaker forms, should guarantee in the good coil of institute's coiling its loop length l simultaneously less than diameter L, just the diameter h of loudspeaker iron core c.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 2, be the signal that the prime audio-amplifying circuit is sent here, at first insert the end 1 of noninductive coil L, the other end 2 series connection are inserted the R of loudspeaker load _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 signal two ends d, the e that the prime audio-amplifying circuit is sent here ₁, L ₂, connection and aforementioned symmetry get final product, as shown in Figure 3.

As previously mentioned, sensing device also includes magnetic core coil, transformer ... or the like, therefore 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, the end 1 of noninductive coil L is serially connected in the primary coil L end just of transformer B, will guarantees that simultaneously the diameter h of transformer B should be greater than the length 1 of the good noninductive coil L of institute's coiling, as shown in Figure 7; In actual applications, in order to increase antijamming capability, 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; Even 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, the antijamming capability of circuit will be better like this.

Transformer for E sections core, best winding method should be as shown in figure 10, lead after the doubling directly on the outside of E sections core D, is gone into an end 1 serial connection of lead an elementary end of E sections core transformer then, will guarantee the internal diameter 1 of the length 1 of coil L equally less than E sections core D.

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 or 2 of noninductive coil is concatenated on the terminated line terminal e 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 doubling end to end, and (a) carries out coiling in the outside of para-electric magnetic induction device simultaneously from the folding section, and is connected in series use with the electromagnetic induction device that is depended on.

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