CN202443827U - Novel transformer - Google Patents

Abstract

The utility model discloses a novel transformer. The novel transformer comprises two U-shaped magnetic cores which are in abutting connection with each other in a mouth-to-mouth manner and two coils wound on two U-shaped magnetic core columns. The novel transformer is characterized in that two magnetized cuboid-shaped permanent-magnetism ferrite sheets are arranged between the two bonding faces which are in abutting connection with each other, and the directions of magnetic fields generated by the two permanent-magnetism ferrite sheets in the two U-shaped magnetic cores are consistent. According to the novel transformer, as the directions of the magnetic fields generated by the two permanent-magnetism ferrite sheets in the two U-shaped magnetic cores which are in abutting connection with each other, are opposite to that of the magnetic field generated by direct current in a winding of the transformer, part of the magnetic field generated by the direct current in the winding of the transformer is counteracted by the magnetic fields generated by the permanent-magnetism ferrite sheets, and thus, a higher direct current can pass through the winding of the transformer.

Description

Novel transformer

Technical field

The utility model relates to a kind of transformer, particularly relates to a kind of novel transformer that is applied in the high-frequency circuit.

Background technology

At present; Generally use ferrite core as transformer in the high-frequency circuit,, require electronic devices and components constantly to develop to miniaturization and high power direction along with the develop rapidly of electronic technology; In order to satisfy this growth requirement; The direct current that requires transformer to allow to pass through is increasing, and this tends to cause the decline significantly of Transformer Winding inductance, thereby makes the transformer can't operate as normal.For preventing the generation of magnetic saturation phenomenon; Must improve the dc superposition characteristic of transformer; Traditional method is in the magnetic circuit of magnetic core, to open one section air gap, although this method can be improved the dc superposition characteristic of transformer to a certain extent, improved degree is very limited.For being operated in transformer, can't adopt this method, because the air gap in the ferrite core magnetic circuit with big direct-current component; Can not open very greatly; Otherwise inductance is very low, and leakage field is very big, can produce certain electromagnetic to other electronic devices and components and disturb.

Summary of the invention

To the deficiency of prior art, the purpose of the utility model is, provides a kind of electronic circuit that can be applied to have than big direct-current component to use transformer.

For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of novel transformer; Comprise two with mode butted U-shaped magnetic core mouth to mouth be wrapped in two coils on the U type core post; It is characterized in that: between two faying faces of said mutual butt joint, be provided with two rectangular-shaped permanent-magnet ferrite sheets that magnetized, the magnetic direction that these two permanent-magnet ferrite sheets produce in two U shaped magnetic cores is consistent.

Aforesaid novel transformer is characterized in that: the material of described U type magnetic core is a ferrite.

The utility model has the advantages that: because these two permanent-magnet ferrite sheets magnetic direction that direct current produced in inner magnetic direction that is produced of two U shaped magnetic cores of butt joint and Transformer Winding is opposite; Therefore some is offset the magnetic field that direct current produced in the Transformer Winding by the magnetic field that the permanent-magnet ferrite sheet is produced, thereby can make in the Transformer Winding through bigger direct current.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Embodiment

For further disclosing the technical scheme of the utility model; Now be described with reference to the accompanying drawings the execution mode of the utility model: as shown in Figure 1; A kind of novel transformer, comprise two with mode butted U-shaped FERRITE CORE mouth to mouth 1 be wrapped in two coils 2 on the U type core post, between two faying faces of butt joint each other; Be provided with two rectangular-shaped permanent-magnet ferrite sheets 3 that magnetized, the magnetic direction that these two permanent-magnet ferrite sheets produce in two U shaped magnetic cores is consistent.

More than, the basic design and the basic principle of the utility model have been set forth through introduction to listed execution mode.But the utility model never is limited to above-mentioned listed execution mode, and every equivalent variations, improvement of doing based on the technical scheme of the utility model reaches and deliberately become of inferior quality behavior, all should belong to the protection range of the utility model.

Claims (2)

1. novel transformer; Comprise two with mode butted U-shaped magnetic core mouth to mouth be wrapped in two coils on the U type core post; It is characterized in that: between two faying faces of said mutual butt joint; Be provided with two rectangular-shaped permanent-magnet ferrite sheets that magnetized, the magnetic direction that these two permanent-magnet ferrite sheets produce in two U shaped magnetic cores is consistent.

2. novel transformer according to claim 1 is characterized in that: the material of described U type magnetic core is a ferrite.

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