CN2178933Y - Transformer special for super-thin programme controlled numerical switchboard - Google Patents
Transformer special for super-thin programme controlled numerical switchboard Download PDFInfo
- Publication number
- CN2178933Y CN2178933Y CN 93247866 CN93247866U CN2178933Y CN 2178933 Y CN2178933 Y CN 2178933Y CN 93247866 CN93247866 CN 93247866 CN 93247866 U CN93247866 U CN 93247866U CN 2178933 Y CN2178933 Y CN 2178933Y
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- magnetic core
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Abstract
The utility model relates to a transformer used by a programmed control digital exchanger, which comprises a main body structure composed of an upper magnetic core 1 and a lower magnetic core 2. A coil packet 5 is arranged in the main body. The magnetic core is made of ferrite material with a large inductance figure. The height B of the magnetic core is from 8 mm to 13 mm, and the height F of the inner diameter is from 4 mm to 9 mm. The inductance figure of the magnetic core AL is more than or equal to 125000*10 <-9 >H. The number of turns of the winding coil is from 2000 to 3000 turns. Compared with an existing transformer, the height of the transformer of the utility model is lower. Therefore, the utility model can be used on various existing programmed control digital exchangers so as to replace partial expensive integrated circuits. The price of the transformer can be reduced.
Description
The utility model relates to the dedicated transformer that a kind of SPC digital switch uses.
The analog line circuit of SPC digital switch and trunk interface circuit have feed, over-voltage over-current protection, and ring monitors, coding, two---the conversion of four lines, and with the concentrated switching network functional medium that is connected to of some subscriber line circuits.For reaching every design objective, switch has adopted various application-specific integrated circuit (ASIC)s, as: MH8970, MH88500, L3000, L3090, TS5071 etc.But integrated circuit costs an arm and a leg, so the price of SPC digital switch is just very high.
For addressing this problem, cheapness, safety, high-density installation and to meet the dedicated transformer of every design objective selected substitute partly integrated circuit, and the price of SPC digital switch has just reduced like this.What both at home and abroad this class transformer used is the RM8 magnetic core that the IEC431 file is designed, and its model has TL/H/8682 etc. and MHD8101, MHD8102 etc.(RM8 magnetic core height is 16.5 but owing to limitation in height
+ 0 -0.2mm), above-mentioned transformer can only be used on the type of two printed circuit board spacings greater than 25mm.Yet, some SPC digital switch, particularly external, two printed circuit board spacings are less than 25mm, Japanese fuji F150 type SPC digital switch for example, its spacing is 15mm.This brings many difficulties just for the alternative work of existing transformer.
The purpose of this utility model will provide a kind of ultrathin transformer exactly, and it can use in two printed circuit board spacings and be not less than on the various SPC digital switches of 15mm.
The purpose of this utility model is achieved in that and adopts FERRITE CORE ultra-thin, big inductance coefficent that the height of the aspect ratio RM8 magnetic core of this magnetic core is little.The decline of magnetic core height has reduced the height of whole transformer.But along with the decline of magnetic core height, the valid window volume of coiling has been reduced.For offsetting this factor, transformer must possess the 1. magnetic core of big inductance coefficent, 2. reduces the coiling number of turns of coil.
After physical dimension of the present utility model changed, it still can reach primary and secondary series electrical sensibility reciprocal and respectively be 1.5H, the design objective of reversed polarity winding electric sensibility reciprocal 36H, thus satisfy the requirement of all kinds of SPC digital switches.Therefore those use the cost of SPC digital switch of the present utility model, with integrated circuit, very significantly decline are arranged than all.
Fig. 1 is the main body figure of the transformer that the utility model proposes
Fig. 2 is the vertical view of the transformer that the utility model proposes
Fig. 3 is the A-A profile of the transformer that the utility model proposes
Describe the concrete structure that the utility model proposes in detail below in conjunction with accompanying drawing.The agent structure of this transformer is made of two ultra-thin magnetic cores, and they are respectively magnetic core 1 and following magnetic core 2.Individual coil bag 5 is arranged in the agent structure.Last magnetic core 1 and following magnetic core 2 all are the Ferrite Materials that adopts big inductance coefficent, inductance coefficent AL 〉=12500X10
-9H.The total height of upper and lower magnetic core, promptly the magnetic core height B is 8～13mm; Internal diameter height F is 4～9mm.The coiling number of turns of coil is 2000～3000 circles.Upper and lower magnetic core by adhesive bonding after, tighten with securing member 3,4 and circuit board again.Securing member the 3, the 4th forms with the corrosion resistant plate punching out, and silver-plated, so that weld well with circuit board.6 are the insulation protection sheet.The entire infrastructure of this transformer is fire-retardant.
A among Fig. 2,3 is the transformer width, and B is the magnetic core height, and C is narrow hem width degree, and D is an internal diameter, and E is the stem stem diameter, and F is the internal diameter height.The size of B, F wherein, outside changing with the ratio of existing transformer, all the other sizes all can be constant.
Claims (3)
1, the employed transformer of a kind of SPC digital switch, it comprises an agent structure of being made up of last magnetic core 1 and following magnetic core 2, and individual coil bag 5 is arranged in the main body, it is characterized in that magnetic core adopts the Ferrite Material of big inductance coefficent, the magnetic core height B is 8～13mm, and internal diameter height F is 4～9mm.
2, transformer according to claim 1 is characterized in that the inductance coefficent AL 〉=12500X10 of magnetic core
-9H.
3, transformer according to claim 1, the coiling number of turns that it is characterized in that coil is 2000～3000 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247866 CN2178933Y (en) | 1993-12-21 | 1993-12-21 | Transformer special for super-thin programme controlled numerical switchboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247866 CN2178933Y (en) | 1993-12-21 | 1993-12-21 | Transformer special for super-thin programme controlled numerical switchboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2178933Y true CN2178933Y (en) | 1994-10-05 |
Family
ID=33820169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247866 Expired - Fee Related CN2178933Y (en) | 1993-12-21 | 1993-12-21 | Transformer special for super-thin programme controlled numerical switchboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2178933Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101558460B (en) * | 2006-10-31 | 2012-10-24 | 亚尔科·萨洛迈基 | Inductive component manufacturing method |
-
1993
- 1993-12-21 CN CN 93247866 patent/CN2178933Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101558460B (en) * | 2006-10-31 | 2012-10-24 | 亚尔科·萨洛迈基 | Inductive component manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |