CN2266229Y

CN2266229Y - Multi-winding pulse transformer with low-distribution capacitance windings capable of resisting high voltage between them

Info

Publication number: CN2266229Y
Application number: CN 96233907
Authority: CN
Inventors: 刘永言
Original assignee: XIWANG ELECTRONIC RESEARCH INST CHENGDU CITY
Current assignee: XIWANG ELECTRONIC RESEARCH INST CHENGDU CITY
Priority date: 1996-10-21
Filing date: 1996-10-21
Publication date: 1997-10-29
Anticipated expiration: 2006-10-21

Abstract

The utility model relates to a multiple winding pulse transformer. Each winding 2 passes through a pair of teflon sleeves 3 which are distributed at the inner side and the outer side of an annular magnetic core 4 and is wound on the annular magnetic core 4. A leading out wire of each winding 2 passes through an insulating base 5, the whole pulse transformer is encapsulated by epoxy resin pulse 1. The windings 2 can bear high voltage and are distributed with small capacitance.

Description

High voltage bearing low distributed capacitance, many windings pulse transformer between a kind of winding

The utility model relates to a kind of pulse transformer, especially the pulse transformer that is made of two or more windings.

In present prior art, the pulse transformer made from toroidal core for improving withstand voltage between winding, generally adopts the way that improves lead self dielectric strength or adopts and fill up ways such as adding the cover insulating sleeve on insulant, the lead-out wire between winding.It is not suitable for former pair of limit of pulse transformer or pays between each winding of limit and has high potential difference, needs reliable insulation to isolate and the situation of low distributed capacitance.Otherwise will be forced to not use the magnetic core of annular.

Task of the present utility model provides that dielectric strength between a kind of winding is high especially, between winding distributed capacitance low especially, make more convenient, with low cost, as to use toroidal core pulse transformer.

For realizing above-mentioned task, solution of the present utility model is: a kind of many windings pulse transformer of being made up of ferrite toroidal magnetic core, winding, insulator foot, there is the polytetrafluoroethylene sleeve pipe each winding and ferrite toroidal magnetic core contact position, the polytetrafluoroethylene sleeve pipe places the inside and outside both sides of ferrite toroidal magnetic core, distributes in pairs.All numbers of turn of same winding all are through with a pair of inside pipe casing, winding, ferrite toroidal magnetic core, polytetrafluoroethylene sleeve pipe are by epoxy resin enclosed, the lead-out wire of each winding passes, is exposed at outside the epoxy resin from the corresponding aperture of insulator foot, so that be connected with external circuit.

Since in the above-mentioned solution between each winding and adopted the sleeve pipe and the epoxide resin material of high insulating property between winding and the annular ferrite core, such structure has guaranteed can bear between winding 2000 volts of above voltages, it is specially adapted to former pair of limit or pays between each winding of limit have high potential difference, the occasion that needs reliable insulation to isolate.

Figure one is a structural representation of the present utility model.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

In the accompanying drawings, there is the rare sleeve pipe 3 of polytetroxide second on the inside and outside limit of ferrite toroidal magnetic core 4, all numbers of turn of each winding are passed from inside and outside a pair of polytetrafluoroethylene sleeve pipe 3 respectively, epoxy resin 1 will be sealed by the whole pulse transformer that winding, ferrite toroidal magnetic core, polytetrafluoroethylene sleeve pipe are formed, the lead-in wire of five windings passes from the corresponding aperture of insulator foot 5 respectively, passes insulator foot 5 outer lead-out wires and is exposed at outside the epoxy resin so that be connected with external circuit.

Claims

1. high voltage bearing low distributed capacitance, many windings pulse transformer between a winding are made up of toroidal core, winding, insulator foot, it is characterized in that: winding (2) has sleeve pipe (3) with toroidal core (4) contact position; Winding (2), toroidal core (4), sleeve pipe (3) are sealed by epoxy resin (1), and the lead-out wire of winding (2) is exposed at outside the epoxy resin (1).

2. pulse transformer according to claim 1 is characterized in that: this sleeve pipe (3) is to make with the polytetrafluoroethylene material.

3. pulse transformer according to claim 1 is characterized in that: this sleeve pipe (3) places the inside and outside both sides of toroidal core (4).

4. pulse transformer according to claim 1 is characterized in that: all numbers of turn of same winding (2) all are through with a pair of sleeve pipe (3) inside.

5. pulse transformer according to claim 1 is characterized in that: toroidal core (4) is to make with Ferrite Material.

6. pulse transformer according to claim 1 is characterized in that: the terminal pin of winding (2) passes from the corresponding aperture of insulator foot (5).