CN206574585U

CN206574585U - Pulse transformer

Info

Publication number: CN206574585U
Application number: CN201720100747.3U
Authority: CN
Inventors: 彭前香; 贺建军
Original assignee: Zhuzhou Yifan Technology Co Ltd
Current assignee: Zhuzhou Yifan Technology Co Ltd
Priority date: 2017-01-24
Filing date: 2017-01-24
Publication date: 2017-10-20
Anticipated expiration: 2027-01-24

Abstract

The utility model discloses pulse transformer, it includes magnetic core, primary coil, secondary coil and coil brace；The coil brace is set to circular ring type support, and it forms intermediate throughholes and annular groove；The magnetic core is toroidal core, and the interstitial hole of the primary coil through the toroidal core is wrapped on the toroidal core, and the toroidal core is arranged in the annular groove；The secondary coil is formed by three layer insulation wire through intermediate throughholes coiling on the circular ring type support；In the utility model, the secondary coil is formed using three layer insulation wire around the circular ring type support coiling, its not only easy coiling, be easy to processing, and with good insulating properties and anti-wear performance, so as to avoid arcing between the primary coil and the secondary coil, the processing efficiency and performance of the pulse transformer are improved.

Description

Pulse transformer

Technical field

The utility model is related to field transformer, more particularly to a kind of pulse transformer.

Background technology

Transformer (Transformer) is the device for changing alternating voltage using the principle of electromagnetic induction, main member It is primary coil, secondary coil and iron core (magnetic core)；Major function has：Voltage transformation, current transformation, impedance are converted, isolated, surely Press (magnetic saturation transformer) etc.；It can be divided into, according to use,：Power transformer and special transformer (electric furnace change, rectification change, power frequency examination Test transformer, pressure regulator, mining change, audio-frequency transformer, intermediate-frequency transformer, high frequency transformer, impact transformer, instrument transformation Device, electronic transformer, reactor, transformer etc.).

Pulse transformer general principle and general common transformer (such as audio-frequency transformer, power transformer, power transformer Deng) identical, but be just distinguishing from the point of view of the magnetic history this point of magnetic core, pulse transformer and general common transformer are such as Under:

1st, pulse transformer is a transformer being operated in transient state, that is to say, that pulse process is in the of short duration time It is interior to occur, it is the smooth square wave in a top, and general common transformer is operated in continuous constant magnetization, its alternation Signal is changed by sinusoidal waveform.

2nd, pulse signal is the repetition period, certain intervals, and the only voltage of negative or positive electrode, and alternating signal is to connect Continuous to repeat, existing positive also have negative magnitude of voltage.

3rd, pulse transformer requires undistorted during waveform transfer, that is, requires the forward position of waveform, and top drop will be as far as possible It is small, but the two indexs are contradiction.

In the prior art, first phase of the primary coil and secondary coil of the pulse transformer of most of small size in design Spacing between mutually is smaller, on the one hand, it adds difficult processing in processing and making process because making required precision height Degree, on the other hand, the personal distance because of primary coil and secondary coil between the two is restricted in process, is being carried out It is easy to draw electric arc to cause to puncture between primary coil and secondary coil during high-potting.

Therefore, now provide a kind of easy processing and be difficult the pulse transformer of arcing.

Utility model content

Therefore, now provide a kind of pulse transformer, pulse transformer of the present utility model, it include magnetic core, primary coil, Secondary coil and coil brace；The coil brace is set to circular ring type support, and it forms intermediate throughholes and annular groove；It is described Magnetic core is toroidal core, and the interstitial hole of the primary coil through the toroidal core is wrapped on the toroidal core, described Toroidal core is arranged in the annular groove；The secondary coil is by three layer insulation wire through the intermediate throughholes in the circle Coiling is formed on ring-like support.

The breach connected with the annular groove is also formed on the outer wall of the circular ring type support, the primary coil First terminals stretch out from the breach；Wherein, the secondary coil is uniformly twined in the non-gap position of the circular ring type support Around.

The extension elongation of first terminals is 25mm.

The primary coil uniform winding is on the toroidal core.

The winding density of the primary coil is more than the winding density of the secondary coil.

The circular ring type support is made of epoxy resin.

Also include shielded coil, the shielded coil includes the first shielding line, first shielding line and the primary line Circle is wrapped on the toroidal core jointly.

The shielded coil also includes secondary shielding line, and the secondary shielding line and first shielding line are with Double-wire parallel wound Mode and the primary coil be wrapped in jointly on the toroidal core.

Shielding copper foil is additionally provided with the peripheral outer wall of the secondary coil.

The shielding copper foil is pasted onto by insulating tape in the peripheral outer wall of the secondary coil.

Above-mentioned technical proposal of the present utility model has advantages below compared with prior art：

In the utility model, the secondary coil is formed using three layer insulation wire around the circular ring type support coiling, its Not only easy coiling, be easy to processing, and with good insulating properties and anti-wear performance, so as to avoid the primary line Arcing between circle and the secondary coil, improves the processing efficiency and performance of the pulse transformer.

Brief description of the drawings

In order that content of the present utility model is more likely to be clearly understood, below according to specific implementation of the present utility model Example and with reference to accompanying drawing, the utility model is described in further detail, wherein

Fig. 1 is primary coil schematic diagram described in the utility model；

Fig. 2 is pulse transformer schematic diagram described in the utility model；

Fig. 3 is the electrical schematic diagram of pulse transformer described in the utility model；

Reference is expressed as in figure：1- toroidal cores；2- primary coils；3- secondary coils；4- circular ring type supports；In 6- Between through hole；8- interstitial holes；The shielding lines of 9- first；10- secondary shielding lines；11- shields copper foil；The terminals of 13- first.

Embodiment

Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.

As shown in Figure 1,2 and 3, the pulse transformer of the present embodiment, it includes pulse transformer, and it includes magnetic core, primary Coil 2, secondary coil 3 and coil brace；The coil brace is set to circular ring type support 4, and it forms intermediate throughholes 6 and annular Groove；The magnetic core is toroidal core 1, and the interstitial hole 8 of the primary coil 2 through the toroidal core 1 is wrapped in the ring On shape magnetic core 1, the toroidal core 1 is arranged in the annular groove；The secondary coil 3 is by three layer insulation wire described in The coiling on the circular ring type support 4 of intermediate throughholes 6 is formed.In the present embodiment, as preferred embodiment, the annulus Type support 4 is made of epoxy resin.

The secondary coil 3 of the present embodiment is formed using three layer insulation wire around the coiling of circular ring type support 4, and it is not only Easy coiling, it is easy to processing, and with good insulating properties and anti-wear performance, so as to avoid the primary coil 2 The arcing between the secondary coil 3, improves the processing efficiency and performance of the pulse transformer.

The breach connected with the annular groove, the primary coil 2 are also formed on the outer wall of the circular ring type support 4 The first terminals 13 from the breach stretch out；Wherein, non-gap position of the secondary coil 3 in the circular ring type support 4 Uniform winding.In the present embodiment, the stretching of first terminals 13 can in order to the primary coil 2 connect power supply or its His circuit；As preferred embodiment, the extension elongation of first terminals 13 is 25mm.

In the present embodiment, as shown in figure 1, the circle of interstitial hole 8 one of the primary coil 2 through the toroidal core 1 is enclosed Be wrapped on the toroidal core 1, be then installed along with again with the toroidal core 1 in the annular groove；Such as Fig. 2 institutes Show, the secondary coil 3 is then avoided the breach and set, and after the primary coil 2 is installed, the secondary coil 3 is passed through Non- gap position of the uniform winding of the circle circle of the intermediate throughholes 6 one of the circular ring type support 4 in the circular ring type support 4 Place.

In the present embodiment, the uniform winding of primary coil 2 is on the toroidal core 1, and the primary coil 2 Wind the winding density that density is more than the secondary coil 3.

Also include shielded coil, the shielded coil includes the first shielding line 9, first shielding line 9 and the primary Coil 2 is wrapped on the toroidal core 1 jointly.

The shielded coil also includes secondary shielding line 10, and the secondary shielding line 10 and first shielding line 9 are with double Line and around mode and the primary coil 2 be wrapped in jointly on the toroidal core 1.

Shielding copper foil 11 is additionally provided with the peripheral outer wall of the secondary coil 3.

The shielding copper foil 11 is pasted onto by insulating tape in the peripheral outer wall of the secondary coil 3.

As shown in figure 1, the pulse transformer of the present embodiment also includes shielded coil, the shielded coil includes the first shielding Line 9, first shielding line 9 is wrapped on the toroidal core 1 jointly with the primary coil 2；Further, the shielding Coil also includes secondary shielding line 10, and the secondary shielding line 10 and first shielding line 9 are in the way of Double-wire parallel wound and institute Primary coil 2 is stated to be wrapped in jointly on the toroidal core 1.

In the present embodiment, the shielded coil is wrapped in jointly by the way of Double-wire parallel wound with the primary coil 2 On the toroidal core 1；On the one hand, the shielded coil improves the interference free performance of the pulse transformer, on the other hand, described Shielded coil can suppress the peak voltage produced when the primary coil 2 works；The wire rod of shielded coil and primary coil 2 is all It is to use enamel covered wire, the copper cash of shielded coil is equivalent to shielding copper foil, and the interference that primary coil 2 is produced all is by shielding Coil feeds back to the loop of the first terminals 13 of primary coil 2.

On the basis of above-described embodiment, shielding copper is additionally provided with the peripheral outer wall of the secondary coil 3 of the present embodiment Paper tinsel 11；As preferred embodiment, the shielding copper foil 11 is pasted onto the week of the secondary coil 3 outwards by insulating tape On wall；So that the interference of the outer bound pair pulse transformer is prevented or reduces, specific electrical schematic diagram, as shown in Figure 3.

Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims

1. pulse transformer, it includes magnetic core, primary coil (2), secondary coil (3) and coil brace；It is characterized in that：It is described Coil brace is set to circular ring type support (4), and it forms intermediate throughholes (6) and annular groove；The magnetic core is toroidal core (1), the primary coil (2) is wrapped on the toroidal core (1) through the interstitial hole (8) of the toroidal core (1), described Toroidal core (1) is arranged in the annular groove；The secondary coil (3) passes through the intermediate throughholes by three layer insulation wire (6) coiling is formed on the circular ring type support (4)；Also include shielded coil, the shielded coil includes the first shielding line (9), first shielding line (9) is wrapped on the toroidal core (1) jointly with the primary coil (2).

2. pulse transformer according to claim 1, it is characterised in that：On the outer wall of the circular ring type support (4) also into Type has the breach connected with the annular groove, and the first terminals (13) of the primary coil (2) stretch out from the breach；Its In, the secondary coil (3) uniformly winds in the non-gap position of the circular ring type support (4).

3. pulse transformer according to claim 2, it is characterised in that：The extension elongation of first terminals (13) is 25mm。

4. pulse transformer according to claim 1, it is characterised in that：Primary coil (2) uniform winding is described On toroidal core (1).

5. pulse transformer according to claim 4, it is characterised in that：The winding density of the primary coil (2) is more than The winding density of the secondary coil (3).

6. pulse transformer according to claim 1, it is characterised in that：The circular ring type support (4) uses epoxy resin It is made.

7. pulse transformer according to claim 1, it is characterised in that：The shielded coil also includes secondary shielding line (10), the secondary shielding line (10) and first shielding line (9) are in the way of Double-wire parallel wound and the primary coil (2) is common It is same to be wrapped on the toroidal core (1).

8. pulse transformer according to claim 7, it is characterised in that：In the peripheral outer wall of the secondary coil (3) also Provided with shielding copper foil (11).

9. pulse transformer according to claim 8, it is characterised in that：The shielding copper foil (11) is viscous by insulating tape In the peripheral outer wall for being attached to the secondary coil (3).