CN209729692U

CN209729692U - One kind is around resistive transformer

Info

Publication number: CN209729692U
Application number: CN201920255218.XU
Authority: CN
Inventors: 谷晓雄; 马涛
Original assignee: ZTE Intelligent IoT Technology Co Ltd
Current assignee: ZTE Intelligent IoT Technology Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-12-03
Anticipated expiration: 2029-02-28

Abstract

The utility model proposes one kind around resistive transformer, using the model ER35 of transformer framework, the transformer is 85~265V alternating current for input voltage, output voltage is 12V, 16V, the Switching Power Supply of -16V and 6V, the transformer is obtained by sandwich wound, hierarchical structure close to transformer framework to separate transformer framework is the first primary winding, biasing winding, secondary winding transformer, second primary winding, wherein the starting point of the first primary winding is No. 4 pins, clearing end is 2 or No. 3 pins, the starting point of biasing winding is No. 6 pins, clearing end is No. 5 pins, the starting point of the part 12V is No. 12 pins in secondary winding transformer, clearing end is No. 11 pins, the starting point of the part 16V is No. 10 pins, clearing end is No. 8 pins, the starting of the part -16V End is No. 9 pins, and clearing end is No. 13 pins, and the starting point of the part 6V is No. 8 pins, and clearing end is that No. 9 pins, wherein pin 2 and pin 3 are shorted.

Description

One kind is around resistive transformer

Technical field

The utility model belongs to field transformer, and especially one kind is around resistive transformer.

Background technique

Switched-mode power supply (Switch Mode Power Supply, abbreviation SMPS), also known as exchange type power, switch become Parallel operation is a kind of high frequency device for converting electric energy, is one kind of power supply unit.Its function is by the voltage of a level, thoroughly It crosses various forms of frameworks and is converted to the required voltage of user terminal or electric current.The input of Switching Power Supply is AC power source mostly (such as alternating current) or DC power supply, and exporting is the equipment for needing DC power supply mostly.Wherein the design of transformer is switch The core of power supply design.

Utility model content

The utility model proposes a kind of transformers applied to inverse-excitation type switch power-supply, the technical solution adopted is as follows:

One kind is around resistive transformer, and using the model ER35 of transformer framework, the transformer is for input voltage 85~265V alternating current, the Switching Power Supply of output voltage 12V, 16V, -16V and 6V, the transformer are obtained by sandwich wound, It is the first primary winding, biases winding, secondary winding transformer, second to the hierarchical structure far from transformer framework close to transformer framework Primary winding, wherein the starting point of the first primary winding is No. 4 pins, clearing end is 2 or No. 3 pins, biases the starting of winding End is No. 6 pins, and clearing end is No. 5 pins, and the starting point of the part 12V is No. 12 pins in secondary winding transformer, and clearing end is No. 11 Pin, the starting point of the part 16V are No. 10 pins, and clearing end is No. 8 pins, and the starting point of the part -16V is No. 9 pins, are terminated End is No. 13 pins, and the starting point of the part 6V is No. 8 pins, and clearing end is that No. 9 pins, wherein pin 2 and pin 3 are shorted.

Further, the first primary winding uses the specification of conducting wire for #24AWG, structure be 3 lines and around, circle number be 14 circle, Wherein the interval of conducting wire is uniform；First primary winding is externally provided with one layer of insulation rubber band.

Further, biasing winding use the specification of conducting wire for #25AWG, structure be 2 lines and around, enclose number for 5 enclose, wherein The interval of conducting wire is uniform, and coiling direction is identical as the first primary winding；Biasing winding is externally provided with three layers of insulation rubber band.

Further, the part 12V uses 2mil copper foil in secondary winding transformer, and circle number is 4 circles, coiling direction with first it is primary around It hinders identical；The part is externally provided with one layer of insulation rubber band.

Further, the part 16V uses the specification of conducting wire for #28T.I.W. in secondary winding transformer, and circle number is 3 circles, wherein leading The interval of line is uniform, and coiling direction is identical as the first primary winding；The part is externally provided with one layer of insulation rubber band.

Further, the part -16V uses the specification of conducting wire for #28T.I.W. in secondary winding transformer, and circle number is 5 circles, wherein leading The interval of line is uniform, and coiling direction is identical as the first primary winding；The part is externally provided with three layers of insulation rubber band.

Further, the part 6V uses the specification of conducting wire for #26T.I.W. in secondary winding transformer, and structure is for 2 lines and around circle number For 2 circles, wherein the interval of conducting wire is uniform, and coiling direction is identical as the first primary winding；The part is externally provided with one layer of insulation rubber band.

Further, the second primary winding uses the specification of conducting wire for #24AWG, structure be 3 lines and around, circle number be 13 circle, Wherein the interval of conducting wire is uniform；The part is externally provided with three layers of insulation rubber band.

Further, the opposite two sides of the transformer are equipped with 3mm back gauge polyester webs adhesive tape.

Further, the transformer includes EER35 and NC-2H using the model of iron core, is wherein opened between two halves iron core Air gap.

Further, insulation rubber band selects the polyester film of 1mil axial width.

Compared with prior art, the utility model has the beneficial effects that: the utility model proposes transformer output be 12V, 16V, -16V and 6V, wherein 12V voltage does not have as main output voltage, 12V output winding and other road output stage windings There is common end, i.e. 12V voltage and other road output voltages is separation, can be made open using transformer production Switching Power Supply Powered-down source reduces the cost of manufacture of Switching Power Supply by powering for digital circuit and analog circuit.

Detailed description of the invention

Fig. 1 is around resistive transformer winding structural schematic diagram；

Fig. 2 is transformer framework ER35 overall structure diagram；

Fig. 3 is transformer framework ER3 pin schematic diagram；

Fig. 4 is transformer electrical characteristics schematic diagram.

Specific embodiment

In the present embodiment, the parameter of transformer is as shown in the table,

Table 1

In the present embodiment, using the model ER35 of transformer framework, as shown in figure 3, pin number is using unified standard, it is left Upper angle is 1 foot, and pin is distributed counterclockwise, and transformer winding selects " sandwich " winding, i.e., secondary coil is by primary line Circle is clipped in the middle, as shown in Figure 1 to Figure 3, primary for first to the hierarchical structure far from transformer framework close to transformer framework Winding, biasing winding, secondary winding transformer, the second primary winding, wherein the starting point of the first primary winding is No. 4 pins, clearing end For 2 or No. 3 pins, the starting point for biasing winding is No. 6 pins, and clearing end is No. 5 pins, and the part 12V rises in secondary winding transformer Beginning is No. 12 pins, and clearing end is No. 11 pins, and the starting point of the part 16V is No. 10 pins, and clearing end is No. 8 pins ,- The starting point of the part 16V is No. 9 pins, and clearing end is No. 13 pins, and the starting point of the part 6V is No. 8 pins, and clearing end is No. 9 Pin, wherein pin 2 and pin 3 are shorted.

First primary winding uses the specification of conducting wire for #24AWG, and structure is for 3 lines and around circle number is 14 circles, wherein conducting wire Interval it is uniform；First primary winding is externally provided with one layer of insulation rubber band.Biasing winding uses the specification of conducting wire for #25AWG, structure For 2 lines and around circle number is 5 circles, and wherein the interval of conducting wire is uniform, and coiling direction is identical as the first primary winding；Biasing winding is outer Equipped with three layers of insulation rubber band.The part 12V uses 2mil copper foil in secondary winding transformer, and circle number is 4 circles, coiling direction with first it is primary around It hinders identical；The part is externally provided with one layer of insulation rubber band.The part 16V uses the specification of conducting wire for #28T.I.W. in secondary winding transformer, encloses Number is 3 circles, and wherein the interval of conducting wire is uniform, and coiling direction is identical as the first primary winding；The part is externally provided with one layer of insulation rubber Band.The part -16V uses the specification of conducting wire for #28T.I.W. in secondary winding transformer, and circle number is 5 circles, and wherein the interval of conducting wire is uniform, Coiling direction is identical as the first primary winding；The part is externally provided with three layers of insulation rubber band.The part 6V uses conducting wire in secondary winding transformer Specification be #26T.I.W., structure be 2 lines and around, circle number be 2 circle, wherein the interval of conducting wire is uniform, at the beginning of coiling direction and first Grade winding is identical；The part is externally provided with one layer of insulation rubber band.Second primary winding uses the specification of conducting wire for #24AWG, and structure is 3 lines and around, circle number be 13 circle, wherein the interval of conducting wire is uniform；The part is externally provided with three layers of insulation rubber band.

Wherein insulation rubber band selects the polyester film of 1mil axial width, the top and bottom end of transformer point after the completion of coiling It She You not 3mm back gauge polyester webs adhesive tape.

Transformer includes EER35 and NC-2H (Nicera) or equivalent specifications magnetic core using the model of iron core, wherein two halves Air gap is opened between iron core.

Technical principle of the utility model has been described above with reference to specific embodiments, these descriptions are intended merely to explain this reality With novel technical principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.It is explained based on this, Those skilled in the art do not need to pay for creative labor other specific embodiment parties that can associate the utility model Formula all will fall within the protection scope of the utility model.

Claims

1. one kind is around resistive transformer, using the model ER35 of transformer framework, which is characterized in that the transformer is for defeated Enter voltage for 85~265V alternating current, the Switching Power Supply of output voltage 12V, 16V, -16V and 6V, the transformer pass through multilayer Coiling obtains, and is the first primary winding, biases winding, secondary to the hierarchical structure far from transformer framework close to transformer framework Winding, the second primary winding, wherein the starting point of the first primary winding be No. 4 pins, clearing end be 2 or No. 3 pins, biasing around The starting point of resistance is No. 6 pins, and clearing end is No. 5 pins, and the starting point of the part 12V is No. 12 pins in secondary winding transformer, is terminated End is No. 11 pins, and the starting point of the part 16V is No. 10 pins, and clearing end is No. 8 pins, and the starting point of the part -16V is No. 9 Pin, clearing end are No. 13 pins, and the starting point of the part 6V is No. 8 pins, and clearing end is No. 9 pins, wherein pin 2 and pin 3 are shorted.

2. one kind is around resistive transformer as described in claim 1, which is characterized in that the first primary winding uses the specification of conducting wire For #24AWG, structure is for 3 lines and around circle number is 14 circles, and wherein the interval of conducting wire is uniform；First primary winding be externally provided with one layer every From adhesive tape.

3. one kind is around resistive transformer as claimed in claim 2, which is characterized in that biasing winding uses the specification of conducting wire for # 25AWG, structure is for 2 lines and around circle number is 5 circles, and wherein the interval of conducting wire is uniform, and coiling direction is identical as the first primary winding； Biasing winding is externally provided with three layers of insulation rubber band.

4. one kind is around resistive transformer as claimed in claim 3, which is characterized in that the part 12V uses 2mil copper in secondary winding transformer Foil, circle number are 4 circles, and coiling direction is identical as the first primary winding；The part is externally provided with one layer of insulation rubber band.

5. one kind is around resistive transformer as claimed in claim 4, which is characterized in that the part 16V uses conducting wire in secondary winding transformer Specification is #28T.I.W., and circle number is 3 circles, and wherein the interval of conducting wire is uniform, and coiling direction is identical as the first primary winding；The portion Exceptionally it is equipped with one layer of insulation rubber band.

6. one kind is around resistive transformer as claimed in claim 5, which is characterized in that the part -16V uses conducting wire in secondary winding transformer Specification is #28T.I.W., and circle number is 5 circles, and wherein the interval of conducting wire is uniform, and coiling direction is identical as the first primary winding；The portion Exceptionally it is equipped with three layers of insulation rubber band.

7. one kind is around resistive transformer as claimed in claim 6, which is characterized in that the part 6V uses the rule of conducting wire in secondary winding transformer Lattice are #26T.I.W., structure be 2 lines and around, circle number is 2 circles, and wherein the interval of conducting wire is uniform, coiling direction with first it is primary around It hinders identical；The part is externally provided with one layer of insulation rubber band.

8. one kind is around resistive transformer as claimed in claim 7, which is characterized in that the second primary winding uses the specification of conducting wire For #24AWG, structure is for 3 lines and around circle number is 13 circles, and wherein the interval of conducting wire is uniform；The part is externally provided with three layers of insulation rubber Band.

9. one kind is around resistive transformer as claimed in claim 8, which is characterized in that the opposite two sides of the transformer are equipped with 3mm Back gauge polyester webs adhesive tape.

10. one kind is around resistive transformer as claimed in claim 9, which is characterized in that the transformer uses the model packet of iron core EER35 and NC-2H are included, wherein opens air gap between two halves iron core.