CN201667640U - Circuit with zero ohmic resistance - Google Patents
Circuit with zero ohmic resistance Download PDFInfo
- Publication number
- CN201667640U CN201667640U CN2010201530712U CN201020153071U CN201667640U CN 201667640 U CN201667640 U CN 201667640U CN 2010201530712 U CN2010201530712 U CN 2010201530712U CN 201020153071 U CN201020153071 U CN 201020153071U CN 201667640 U CN201667640 U CN 201667640U
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- ohm resistor
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Abstract
The utility model provides a circuit with zero ohmic resistances comprising a power supply module, a resistance module, and a load module which are connected in order to form a loop circuit. The resistance module is made of N zero ohmic resistances which are in parallel connections. The N represents an integer equal to or greater than one. And at least one of the N zero ohmic resistances is made from copper or copper alloy. The introduction of such a novel circuit can reduce the size of a zero ohmic resistance on a PCB board, therefore, further reducing the producing costs and simplifying the producing process and shortening the producing cycle as well.
Description
Technical field
The utility model relates to computer realm, particularly has the circuit of Zero-ohm resistor.
Background technology
Printed circuit board (PCB) (PCB) is widely used in each electronic product.The reason of aspect such as circuit adjustment or compatible design all is provided with microhm resistance usually in the printed circuit for convenience.The resistance of the self-resistance of microhm resistance commonly used approaches zero, thereby is also referred to as Zero-ohm resistor below 50 milliohms.This characteristic of this Zero-ohm resistor is used in printed circuit board (PCB) widely, for example: can do wire jumper usefulness, if certain section circuit need not, directly do not paste this resistance and get final product (not influencing outward appearance); When the match circuit parameter is uncertain, replace with Zero-ohm resistor, in the time of actual the debugging, determine parameter, the element with concrete numerical value replaces again; When surveying the power consumption stream of certain partial circuit if desired, can remove Zero-ohm resistor, connect ammeter, the convenient like this power consumption stream of surveying; When wiring, also can adopt Zero-ohm resistor to do fly line; Under high-frequency signal, serve as inductance or electric capacity; Single-point grounding (referring to that protective earthing, working earthing, DC earthing are separated from each other, and become autonomous system separately on equipment); The fuse effect; Simulation ground and digitally single-point grounding.
Generally speaking, before the normal use of PCB, need do certain test, for example detect the electric current that PCB goes up a certain specific part load PCB.The electric current of test section load generally adopts precision resistance, after detection is finished, uses Zero-ohm resistor to substitute precision resistance, and circuit is coupled together, and adopts the Zero-ohm resistor of a plurality of parallel connections usually.
The schematic diagram of traditional Zero-ohm resistor as shown in Figure 1.The Zero-ohm resistor of different size allows the electric current difference passed through, and for example the Zero-ohm resistor of 0805 specification allows the electric current by 2A.So, when needing,, shunt with regard to the Zero-ohm resistor that needs 50 these specifications as selecting the Zero-ohm resistor of permission by 0402,0603,0805 or 1206 specifications of the electric current of 2A by the 100A electric current.Yet, under the certain situation of pcb board area, there is not so big area for settling for example 50 Zero-ohm resistors, can cause the pcb board can't operate as normal like this.Further,, can make therefore that also the cost of manufacture of pcb board increases, waste the area of pcb board, and made the production cycle prolong, make product not have competitiveness even when the design pcb board, reserved the position of more arrangement Zero-ohm resistor.And the expense of redesign pcb board is extremely high.
Therefore, need a kind of new circuit that has Zero-ohm resistor, can solve traditional Zero-ohm resistor allow the current value that passes through too small make pcb board can not operate as normal or on pcb board the excessive problem of area occupied.
The utility model content
Introduced the notion of a series of reduced forms in the utility model content part, this will further describe in the embodiment part.Utility model content part of the present utility model does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection range of attempting to determine technical scheme required for protection.
The invention provides a kind of circuit, comprising with Zero-ohm resistor: supply module, resistive module and load blocks, described supply module, described resistive module and described load blocks connect and compose loop successively; It is characterized in that described resistive module is made of N Zero-ohm resistor parallel connection, described N is the integer more than or equal to 1, has a copper or copper alloy system Zero-ohm resistor in the described N Zero-ohm resistor at least.
Preferably, a described N Zero-ohm resistor is copper or copper alloy system Zero-ohm resistor, and N≤20.
Preferably, described I
Load/ S≤N≤13, described I
LoadBe the electric current by described load blocks, S is the minimum value of the maximum current that can bear of all the described Zero-ohm resistors in the described circuit.
Preferably, described copper or copper alloy system Zero-ohm resistor are cuboids, and the length of described cuboid is W, and wide is W, and height is T, and the scope of L: W is 1～3, and the scope of W: T is 0.5～8, and the scope of L: T is 1.5～15.
Preferably, the scope of described L: W is 1.5～2.6, and the scope of described W: T is 0.8～2, and the scope of described L: T is 1.9～3.7.
Preferably, the scope of described L: W is 1.5～2.8, and the scope of described W: T is 1～3, and the scope of described L: T is 2.2～5.5.
Preferably, the scope of described L: W is 1.5～2.7, and the scope of described W: T is 1.3～3.2, and the scope of described L: T is 2.9～5.9.
Preferably, the scope of described L: W is 1.7～2.5, and the scope of described W: T is 2.2～3.9, and the scope of described L: T is 4.6～7.6.
Preferably, described copper or copper alloy system Zero-ohm resistor are of a size of following arbitrary specification:
Described L is 0.60 ± 0.05mm, and described W is 0.30 ± 0.05mm, and described T is 0.23 ± 0.05mm;
Described L is 1.00 ± 0.10mm, and described W is 0.50 ± 0.10mm, and described T is 0.30 ± 0.10mm;
Described L is 1.60 ± 0.15mm, and described W is 0.80 ± 0.15mm, and described T is 0.40 ± 0.10mm;
Described L is 2.00 ± 0.20mm, and described W is 1.25 ± 0.15mm, and described T is 0.50 ± 0.10mm;
Described L is 3.20 ± 0.20mm, and described W is 1.60 ± 0.15mm, and described T is 0.55 ± 0.10mm;
Described L is 3.20 ± 0.20mm, and described W is 2.50 ± 0.20mm, and described T is 0.55 ± 0.10mm;
Described L is 4.50 ± 0.20mm, and described W is 3.20 ± 0.20mm, and described T is 0.55 ± 0.10mm;
Described L is 5.00 ± 0.20mm, and described W is 2.50 ± 0.20mm, and described T is 0.55 ± 0.10mm;
Described L is 6.40 ± 0.20mm, and described W is 3.20 ± 0.20mm, and described T is 0.55 ± 0.10mm.
Preferably, described copper or copper alloy system Zero-ohm resistor directly are welded on the circuit board.
The utility model circuit can reduce the area occupied of Zero-ohm resistor on limited pcb board, and reduces production costs further, reduces processing step, shortens the production cycle.
Description of drawings
Following accompanying drawing of the present utility model is used to understand the utility model at this as a part of the present utility model.Embodiment of the present utility model and description thereof have been shown in the accompanying drawing, have been used for explaining principle of the present utility model.In the accompanying drawings,
Fig. 1 is the schematic diagram of traditional Zero-ohm resistor;
Fig. 2 is the module diagram according to the circuit of the Zero-ohm resistor of the utility model making;
Fig. 3 shows according to the employing copper of the utility model making or the circuit of copper alloy system Zero-ohm resistor;
Fig. 4 is according to the copper in the circuit that has Zero-ohm resistor of the utility model making or the schematic diagram of copper alloy system Zero-ohm resistor.
Embodiment
In the following description, having provided a large amount of concrete details understands the utility model more completely so that provide.Yet, it will be apparent to one skilled in the art that the utility model can need not one or more these details and implemented.In other example,, be not described for technical characterictics more well known in the art for fear of obscuring with the utility model.
In order thoroughly to understand the utility model, will in following description, detailed steps be proposed, so that the circuit that has Zero-ohm resistor in explanation the utility model.Obviously, execution of the present utility model is not limited to the specific details that the technical staff had the knack of of computer hardware.Preferred embodiment of the present utility model is described in detail as follows, yet except these were described in detail, the utility model can also have other execution modes.
Fig. 2 is the module diagram according to the circuit that has Zero-ohm resistor of the utility model making.One end of supply module 201 connects resistive module 202, and the other end of resistive module 202 connects load blocks 203, and the other end of load blocks 203 connects the end that supply module 201 does not link to each other with resistive module 202.Be that supply module, resistive module and load blocks connect and compose loop successively.Wherein, resistive module 202 is selected precision resistance for use when detecting the electric current of load blocks 203, after detection is finished, precision resistance is taken off, and changes Zero-ohm resistor.Whole resistive module 202 is made of N Zero-ohm resistor parallel connection, and wherein 1≤N≤20 and N are integer, wherein has a copper or copper alloy system Zero-ohm resistor at least.When the Zero-ohm resistor of resistive module 202 all adopts copper or copper alloy Zero-ohm resistor, the selection of its N value can be by the electric current of entire circuit, and promptly the maximum current that can bear of the size of the electric current by load blocks 202 and copper or copper alloy system Zero-ohm resistor is determined.
All adopt copper or copper metallic Zero-ohm resistor in circuit, the electric current of load blocks 203 is I
LoadThe time, the minimum value of the maximum current that can bear in the selected Zero-ohm resistor in the initialization circuit is S, the N 〉=I of then selected copper or copper metallic Zero-ohm resistor
Load/ S, the N that chooses are integer.Because the maximum current of the circuit on the pcb board generally is no more than 200A, the maximum current that the Zero-ohm resistor in the utility model allows to pass through is generally 16～20A, so the maximum of N generally is preferably 200/16 ≈ 13, promptly the N value is preferably I
Load/ S≤N≤13.Copper that the utility model is selected for use or copper metallic Zero-ohm resistor can allow bigger electric current to pass through, and its maximum current is generally 16～20A, are 8～10 times of the Zero-ohm resistor made of traditional handicraft.Like this, when the electric current that the fractional load of pcb board need be passed through is big, also can make the pcb board operate as normal, and the Zero-ohm resistor that can avoid needing in the traditional handicraft to provide too much causes the excessive problem of area occupied on pcb board.
Fig. 3 shows according to the employing copper of the utility model making or the circuit of copper alloy system Zero-ohm resistor, and when adopting a plurality of coppers or copper alloy system Zero-ohm resistor, they are in parallel mutually.
As shown in Figure 4, be structural representation according to an embodiment of copper in the circuit of the present utility model or copper metallic Zero-ohm resistor.Copper of the present utility model or copper metallic Zero-ohm resistor 300 are cuboids, and it is long to be L, and wide is W, and height is T.Wherein, the scope of L: W is 1～3, and the scope of W: T is 0.5～8, and the scope of L: T is 1.5～15.
Embodiment one:
The L of copper of the present utility model or copper metallic Zero-ohm resistor 300: the scope of W is 1.5～2.6, and the scope of W: T is 0.8～2, and the scope of L: T is 1.9～3.7.Specifically be exemplified as, L is 0.60 ± 0.05mm, and W is 0.30 ± 0.05mm, and T is 0.23 ± 0.05mm.
Embodiment two:
The L of copper of the present utility model or copper metallic Zero-ohm resistor 300: the scope of W is 1.5～2.8, and the scope of W: T is 1～3, and the scope of L: T is 2.2～5.5.Specifically be exemplified as, L is 1.00 ± 0.10mm, and W is 0.50 ± 0.10mm, and T is 0.30 ± 0.10mm.
Embodiment three:
The L of copper of the present utility model or copper metallic Zero-ohm resistor: the scope of W is 1.5～2.7, and the scope of W: T is 1.3～3.2, and the scope of L: T is 2.9～5.9.Specifically be exemplified as, L is 1.60 ± 0.15mm, and W is 0.80 ± 0.15mm, and T is 0.40 ± 0.10mm.
Embodiment four:
The L of copper of the present utility model or copper metallic Zero-ohm resistor 300: the scope of W is 1.2～2, and the scope of W: T is 1.8～3.5, and the scope of L: T is 3～5.5.Specifically be exemplified as, L is 2.00 ± 0.20mm, and W is 1.25 ± 0.15mm, and T is 0.50 ± 0.10mm.
Embodiment five:
The L of copper of the present utility model or copper metallic Zero-ohm resistor 300: the scope of W is 1.7～2.5, and the scope of W: T is 2.2～3.9, and the scope of L: T is 4.6～7.6.Specifically be exemplified as, L is 3.20 ± 0.20mm, and W is 1.60 ± 0.15mm, and T is 0.55 ± 0.10mm.
Embodiment six:
The L of copper of the present utility model or copper metallic Zero-ohm resistor 300: the scope of W is 1.1～1.5, and the scope of W: T is 3.5～6, and the scope of L: T is 4.6～7.6.Specifically be exemplified as, L is 3.20 ± 0.20mm, and W is 2.50 ± 0.20mm, and T is 0.55 ± 0.10mm.
Embodiment seven:
The L of copper of the present utility model or copper metallic Zero-ohm resistor 300: the scope of W is 1.2～1.6, and the scope of W: T is 4.6～7.6, and the scope of L: T is 6.6～10.5.Specifically be exemplified as, L is 4.50 ± 0.20mm, and W is 3.20 ± 0.20mm, and T is 0.55 ± 0.10mm.
Embodiment eight:
The L of copper of the present utility model or copper metallic Zero-ohm resistor 300: the scope of W is 1.7～2.3, and the scope of W: T is 3.5～6, and the scope of L: T is 7.3～11.6.Specifically be exemplified as, L is 5.00 ± 0.20mm, and W is 2.50 ± 0.20mm, and T is 0.55 ± 0.10mm.
Embodiment nine:
The L of copper of the present utility model or copper metallic Zero-ohm resistor 300: the scope of W is 1.8～2.2, and the scope of W: T is 4.6～7.6, and the scope of L: T is 9.5～14.7.Specifically be exemplified as, L is 6.40 ± 0.20mm, and W is 3.20 ± 0.20mm, and T is 0.55 ± 0.10mm.
The Zero-ohm resistor that adopts in the utility model circuit is copper or copper metallic Zero-ohm resistor, and its conductivity is better, and is cheap, and material is easy to get, and has reduced the cost of manufacture of Zero-ohm resistor.Copper of using in the utility model or copper metallic Zero-ohm resistor can be welded direct on the pcb board, the welding module that the needs that need not may to exist in the traditional handicraft are made in addition, reduce processing step, shortened the production cycle, and reduced production cost further.
The utility model is illustrated by the foregoing description, but should be understood that, the foregoing description just is used for for example and illustrative purposes, but not is intended to the utility model is limited in the described scope of embodiments.It will be understood by those skilled in the art that in addition; the utility model is not limited to the foregoing description; can also make more kinds of variants and modifications according to instruction of the present utility model, these variants and modifications all drop in the utility model scope required for protection.Protection range of the present utility model is defined by the appended claims and equivalent scope thereof.
Claims (10)
1. circuit with Zero-ohm resistor comprises:
Supply module, resistive module and load blocks, described supply module, described resistive module and described load blocks connect and compose loop successively;
It is characterized in that described resistive module is made of N Zero-ohm resistor parallel connection, described N is the integer more than or equal to 1, has a copper or copper alloy system Zero-ohm resistor in the described N Zero-ohm resistor at least.
2. the circuit with Zero-ohm resistor as claimed in claim 1 is characterized in that, a described N Zero-ohm resistor is copper or copper alloy system Zero-ohm resistor, and N≤20.
3. the circuit with Zero-ohm resistor as claimed in claim 2 is characterized in that, described I
Load/ S≤N≤13, described I
LoadBe the electric current by described load blocks, S is the minimum value of the maximum current that can bear of all the described Zero-ohm resistors in the described circuit.
4. as each described circuit in the claim 1 ~ 3 with Zero-ohm resistor, it is characterized in that, described copper or copper alloy system Zero-ohm resistor are cuboids, the length of described cuboid is W, wide is W, and height is T, and the scope of L: W is 1～3, the scope of W: T is 0.5～8, and the scope of L: T is 1.5～15.
5. the circuit with Zero-ohm resistor as claimed in claim 4 is characterized in that, the scope of described L: W is 1.5～2.6, and the scope of described W: T is 0.8～2, and the scope of described L: T is 1.9～3.7.
6. the circuit with Zero-ohm resistor as claimed in claim 4 is characterized in that, the scope of described L: W is 1.5～2.8, and the scope of described W: T is 1～3, and the scope of described L: T is 2.2～5.5.
7. the circuit with Zero-ohm resistor as claimed in claim 4 is characterized in that, the scope of described L: W is 1.5～2.7, and the scope of described W: T is 1.3～3.2, and the scope of described L: T is 2.9～5.9.
8. the circuit with Zero-ohm resistor as claimed in claim 4 is characterized in that, the scope of described L: W is 1.7～2.5, and the scope of described W: T is 2.2～3.9, and the scope of described L: T is 4.6～7.6.
9. the circuit with Zero-ohm resistor as claimed in claim 4 is characterized in that, described copper or copper alloy system Zero-ohm resistor are of a size of following arbitrary specification:
Described L is 0.60 ± 0.05mm, and described W is 0.30 ± 0.05mm, and described T is 0.23 ± 0.05mm;
Described L is 1.00 ± 0.10mm, and described W is 0.50 ± 0.10mm, and described T is 0.30 ± 0.10mm;
Described L is 1.60 ± 0.15mm, and described W is 0.80 ± 0.15mm, and described T is 0.40 ± 0.10mm;
Described L is 2.00 ± 0.20mm, and described W is 1.25 ± 0.15mm, and described T is 0.50 ± 0.10mm;
Described L is 3.20 ± 0.20mm, and described W is 1.60 ± 0.15mm, and described T is 0.55 ± 0.10mm;
Described L is 3.20 ± 0.20mm, and described W is 2.50 ± 0.20mm, and described T is 0.55 ± 0.10mm;
Described L is 4.50 ± 0.20mm, and described W is 3.20 ± 0.20mm, and described T is 0.55 ± 0.10mm;
Described L is 5.00 ± 0.20mm, and described W is 2.50 ± 0.20mm, and described T is 0.55 ± 0.10mm;
Described L is 6.40 ± 0.20mm, and described W is 3.20 ± 0.20mm, and described T is 0.55 ± 0.10mm.
10. the circuit with Zero-ohm resistor as claimed in claim 1 or 2 is characterized in that, described copper or copper alloy system Zero-ohm resistor directly are welded on the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201530712U CN201667640U (en) | 2010-04-08 | 2010-04-08 | Circuit with zero ohmic resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201530712U CN201667640U (en) | 2010-04-08 | 2010-04-08 | Circuit with zero ohmic resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201667640U true CN201667640U (en) | 2010-12-08 |
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ID=43268601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201530712U Expired - Lifetime CN201667640U (en) | 2010-04-08 | 2010-04-08 | Circuit with zero ohmic resistance |
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| Country | Link |
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| CN (1) | CN201667640U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9763333B2 (en) | 2015-03-09 | 2017-09-12 | Cooper Technologies Company | Shared resistor pad bypass |
| CN112540197A (en) * | 2020-11-12 | 2021-03-23 | 浪潮电子信息产业股份有限公司 | Server power supply test fixture |
-
2010
- 2010-04-08 CN CN2010201530712U patent/CN201667640U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9763333B2 (en) | 2015-03-09 | 2017-09-12 | Cooper Technologies Company | Shared resistor pad bypass |
| CN112540197A (en) * | 2020-11-12 | 2021-03-23 | 浪潮电子信息产业股份有限公司 | Server power supply test fixture |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101208 |