CN202473543U

CN202473543U - Transformer of switching power supply and switching power supply

Info

Publication number: CN202473543U
Application number: CN201220069463XU
Authority: CN
Inventors: 郑自伟; 姚平; 王鄲萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-28
Filing date: 2012-02-28
Publication date: 2012-10-03
Anticipated expiration: 2022-02-28

Abstract

The utility model relates to a transformer of a switching power supply and the switching power supply. The transformer of the switching power supply comprises a skeleton, a first primary coil, a second primary coil, a plurality of secondary coils, and a primary feedback coil. The first primary coil, the second primary coil, the plurality of secondary coils and the primary feedback coil are coiled around the skeleton. Two primary coils and a plurality of secondary coils are used so that the transformer of the switching power supply and the switching power supply can adapt to various input power supplies, can provide various output voltages, and have the advantages of being simple in structure, low in cost, and low in power consumption.

Description

The transformer of Switching Power Supply and Switching Power Supply

Technical field

The utility model relates to field transformer, particularly relates to a kind of transformer and Switching Power Supply of Switching Power Supply.

Background technology

The input voltage that transformer in the Switching Power Supply of the prior art is fit to has limitation, and output voltage group number is less, and has the big shortcoming of power consumption, is difficult to satisfy the equipment that possesses various input voltage and output voltage and uses.

The utility model content

The utility model relate to a kind of simple in structure, cost is low, transformer and the Switching Power Supplies of various input voltage with the Switching Power Supply of many group output voltages can be provided.

For addressing the above problem, an aspect of the utility model provides a kind of transformer of Switching Power Supply, comprising: skeleton; First primary coil; Second primary coil; A plurality of secondary coils; Elementary feedback coil; First primary coil, second primary coil, a plurality of secondary coil and elementary feedback coil are on skeleton.

Further, the number of secondary coil is 4 or 5.

Another aspect of the utility model provides a kind of Switching Power Supply, comprises transformer, and this transformer is above-mentioned transformer.

Therefore the utility model, can be adapted to different input power supplys owing to adopted two primary coils and a plurality of secondary coil, and many group output voltages can be provided, and has characteristics simple in structure, that cost is low, low in energy consumption.

Description of drawings

Fig. 1 is the electrical schematic diagram of the utility model;

Fig. 2 is the front view of the utility model; And

Fig. 3 is the end view of the utility model.

Embodiment

As an aspect of the utility model, a kind of transformer of Switching Power Supply is provided.Like Fig. 1-shown in Figure 3, this transformer comprises: skeleton; The first primary coil N1; The second primary coil N7; A plurality of secondary coils especially, please refer to Fig. 1, and said a plurality of secondary coils can be N2, N3, N4, N5 and N6; Elementary feedback coil N8; The first primary coil N1, the second primary coil N7, a plurality of secondary coil and elementary feedback coil N8 are on skeleton.Preferably, the number of secondary coil is 4 or 5.Wherein, PRI representes the elementary of this transformer, and SEC representes the secondary of this transformer; PIN1, PIN2, PIN3, PIN5, PIN6, PIN7, PIN8, PIN9, PIN10, PIN11, PIN12 represent the pin of coil respectively.

Another aspect as the utility model provides a kind of Switching Power Supply, comprises transformer, and its this transformer is above-mentioned transformer.

Because having adopted said structure, the input voltage/electric current of the utility model is 90-264V/850mA, output voltage is 5V/1.2A, 12V/300mA, 24V/500mA and 33V/5mA.

Claims

1. the transformer of a Switching Power Supply is characterized in that, comprising:

Skeleton;

First primary coil;

Second primary coil;

A plurality of secondary coils;

Elementary feedback coil;

Said first primary coil, said second primary coil, said a plurality of secondary coils and said elementary feedback coil are on said skeleton.

2. transformer according to claim 1 is characterized in that, the number of said secondary coil is 4 or 5.

3. a Switching Power Supply comprises transformer, it is characterized in that, said transformer is each described transformer among the claim 1-2.