CN2081137U

CN2081137U - Pulse transformer

Info

Publication number: CN2081137U
Application number: CN 90226220
Authority: CN
Inventors: 徐敬
Original assignee: Dongtai City Radio Element Factory No2 Jiangsu
Current assignee: Dongtai City Radio Element Factory No2 Jiangsu
Priority date: 1990-12-24
Filing date: 1990-12-24
Publication date: 1991-07-17

Abstract

The utility model belongs to a pulse transformer, wherein, the pulse transformer is characterized in that an auxiliary winding is additionally arranged in the air gap of the pulse transformer; the auxiliary winding is placed on the salient position of a main magnetic core; the main winding works at the linear segment of a B-H curve on the job, while the auxiliary winding works at the curve segment. A mutation signal component is taken out, on the job, from the auxiliary winding to act in circuit protection or signal control sampling so as to simplify circuits, reduce cost and increase reliability.

Description

Pulse transformer

The utility model belongs to field transformer.

Existing pulse transformer is not for the magnetic circuit of air gap or have a transformer that the magnetic circuit that prevents magnetically saturated air-gap or permanent magnetic sheet is formed; it is partly linear that magnetic core works in the H-B magnetization curve; each organizes the corresponding unanimity of voltage waveform signal of coil; adopt the overload protection sampling control of this transformer circuit complicated; cost is higher, and reliability is low.

The purpose of this utility model is to provide a kind of main coil to work in H-B magnetization curve linearity range, and auxiliary winding works in the pulse transformer of the bending section of magnetization curve.

Structure of the present utility model is to set up auxiliary winding in the air gap of the pulse transformer of original tape air-gap, should be placed on the protrusion magnetic core of main magnetic core by auxiliary winding, owing to should assist winding magnetic core air gap little, the magnetic core sectional area is little, work in magnetization curve linear segment and bent part, circuit turn-on moment, auxiliary winding induced voltage height, circuit are easy to start.Because it is saturated that this district is easy to, when saturated, the hurried decline of induced voltage of auxiliary winding utilizes the jump signal that descends to do protection or other control is used.

Magnetic core can be EI type magnetic core, also can be two E type magnetic cores, and two Contraband type magnetic cores, the magnetic core of air gap and protrusion can be in the centres of E type, also can be in the side.

The magnetic core that protrudes can with the moulding of main magnetic core time processing, also can stick with glue the connection of agent and main magnetic core.

Advantage of the present utility model is to obtain a semaphore that variable quantity is bigger from auxiliary winding, and to control the main winding conducting and to end, work has the raising reliability within the limits prescribed, simplifies circuit, the advantage that reduces cost.

Below in conjunction with accompanying drawing embodiment of the present utility model is proposed.

Fig. 1 structure chart of the present utility model

Fig. 2 E type of the present utility model magnetic core

The two E type magnetic cores of Fig. 3

The two Contraband type magnetic cores of Fig. 4

Fig. 5 E type magnetic core side band air gap adds the protrusion magnetic core

Among the figure: I type magnetic core in the 1 EI type magnetic core

2 air gaps

3 main windings

4 bands protrude the E type main magnetic core of magnetic core

5 protrude magnetic core

6 auxiliary windings

7 bands protrude the Contraband type magnetic core of magnetic core

8 side bands protrude the E type magnetic core of magnetic core

Embodiment: magnetic core of transformer is selected the EI30 type for use; between E type magnetic core (4) center magnet and I magnetic core (1) 2mm air gap (2) is arranged; on the center magnet of E type magnetic core, stick with glue agent and be stained with diameter 2mm; the garden shape of high 1mm is protruded magnetic core (5); protruding the auxiliary winding (6) that is wound with diameter 0.1,10 circles on the magnetic core; the main winding of pulse transformer (3) diameter 0.38,124 circles; this transformer is as the black and white television set switching mode power supply transformer, and auxiliary winding is done over-voltage and over-current overload protection control sampling.

Claims

1, pulse transformer is made up of the magnetic core and the coil of band air gap, it is characterized in that the part zone has additional auxiliary winding in the middle of air gap.

2, a kind of pulse transformer according to claim 1 is characterized in that auxiliary winding is placed on the protrusion magnetic core on the main magnetic core.

3,, it is characterized in that the magnetic core and the moulding of main magnetic core time processing of protruding according to claim 1,2 described a kind of pulse transformers.

4, according to claim 1,2 described a kind of pulse transformers, it is characterized in that the magnetic core that protrudes sticks with glue agent and is bonded on the main magnetic core.

5,, it is characterized in that magnetic core is to add the protrusion magnetic core between EI type magnetic core air gap according to claim 1,2 described a kind of pulse transformers.

6,, it is characterized in that magnetic core is to add the protrusion magnetic core between the air gap of two E type magnetic cores according to claim 1,2 described a kind of pulse transformers.

7,, it is characterized in that air gap and protrude magnetic core on the center magnet of E magnetic core according to claim 1,2 described a kind of pulse transformers.

8,, it is characterized in that air gap and protrude magnetic core on the side surface body of E type magnetic core according to claim 1,2 described a kind of pulse transformers.

9,, it is characterized in that magnetic core is a band protrusion magnetic core on two Contraband type magnetic cores of band air gap according to claim 1,2 described a kind of pulse transformers.