CN204028156U - A kind of inductive current change-over circuit - Google Patents
A kind of inductive current change-over circuit Download PDFInfo
- Publication number
- CN204028156U CN204028156U CN201420357700.1U CN201420357700U CN204028156U CN 204028156 U CN204028156 U CN 204028156U CN 201420357700 U CN201420357700 U CN 201420357700U CN 204028156 U CN204028156 U CN 204028156U
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- operational amplifier
- resistance
- signal output
- output part
- inverting input
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- 230000001939 inductive effect Effects 0.000 title claims abstract description 8
- 238000001514 detection method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model relates to a kind of circuit structure, especially a kind of inductive current change-over circuit.It comprises four operational amplifiers and seven resistance; Wherein, the in-phase input end of the first operational amplifier connects the in-phase input end of the second operational amplifier by the first resistance, the inverting input of the first operational amplifier and the inverting input of the second operational amplifier respectively with respective signal output part short circuit; The signal output part of the first operational amplifier connects the inverting input of the 3rd operational amplifier by the second resistance, the signal output part of the second operational amplifier connects the in-phase input end of the 3rd operational amplifier by the 3rd resistance; The inverting input of the 3rd operational amplifier connects its signal output part by the 4th resistance, and the signal output part of the 3rd operational amplifier connects the inverting input of four-operational amplifier by the 6th resistance; The inverting input of four-operational amplifier connects its signal output part by the 7th resistance.Circuit structure of the present utility model is simple, practical.
Description
Technical field
The utility model relates to a kind of circuit structure, especially a kind of inductive current change-over circuit.
Background technology
Known, for the electronic components such as the inductance that linear circuit and non-linear circuit are used or electric capacity, Performance Detection when it is run or parameter measurement, all be not easy to use oscillograph directly to show, but need by this type of electronic component through current signal be converted to voltage signal or after being amplified by voltage signal, send into oscillograph and carry out measurements and show.
In existing circuit (as chaos circuit) adopt converting circuit structure more complicated, cost is high, accuracy is low; Therefore, be necessary to carry out structure optimization to existing change-over circuit.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of circuit structure simple inductive current change-over circuit.
To achieve these goals, the utility model adopts following technical scheme:
A kind of inductive current change-over circuit, it comprises the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, four-operational amplifier, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance and the 7th resistance;
The in-phase input end of described first operational amplifier connects the in-phase input end of the second operational amplifier by the first resistance, the inverting input of described first operational amplifier and its signal output part short circuit, the inverting input of described second operational amplifier and its signal output part short circuit;
The signal output part of described first operational amplifier connects the inverting input of the 3rd operational amplifier by the second resistance, the signal output part of described second operational amplifier connects the in-phase input end of the 3rd operational amplifier by the 3rd resistance;
The inverting input of described 3rd operational amplifier connects its signal output part, in-phase input end by the 5th resistance eutral grounding by the 4th resistance, and the signal output part of described 3rd operational amplifier connects the inverting input of four-operational amplifier by the 6th resistance;
The inverting input of described four-operational amplifier connects its signal output part, in-phase input end ground connection by the 7th resistance.
Owing to have employed such scheme, the utility model utilizes the first operational amplifier and the second operational amplifier as the voltage input end at the inductance element two ends in circuit-under-test, utilize four-operational amplifier as the output terminal of final voltage signal to be connected with oscillograph, thus realize detection and the measuring process of " electric current-voltage-amplification-output-display ", its circuit structure is simple, be conducive to reducing circuit cost and the stability improving circuit, there is very strong practicality.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As shown in Figure 1, the inductive current change-over circuit of the present embodiment, it comprises the electronic components such as the first operational amplifier Q1, the second operational amplifier Q2, the 3rd operational amplifier Q3, four-operational amplifier Q4, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 and the 7th resistance R7.
Wherein, the in-phase input end of the first operational amplifier Q1 connects the in-phase input end of the second operational amplifier Q2 by the first resistance R1, the inverting input of the first operational amplifier Q1 and its signal output part short circuit, the inverting input of the second operational amplifier Q2 and its signal output part short circuit; The signal output part of the first operational amplifier Q1 connects the inverting input of the 3rd operational amplifier Q3 by the second resistance R2, the signal output part of the second operational amplifier Q2 connects the in-phase input end of the 3rd operational amplifier Q3 by the 3rd resistance R3; The inverting input of the 3rd operational amplifier Q3 connects its signal output part, in-phase input end then by the 5th resistance R5 ground connection by the 4th resistance R4, and the signal output part of the 3rd operational amplifier Q3 connects the inverting input of four-operational amplifier Q4 by the 6th resistance R6; The inverting input of four-operational amplifier Q4 connects its signal output part, in-phase input end then direct ground connection by the 7th resistance R7.
So, the inductance element in the in-phase input end series connection circuit under test of the second operational amplifier Q2 can be utilized, the voltage at tested inductance element two ends is tentatively amplified by the first operational amplifier Q1 and the second operational amplifier Q2, recycle the 3rd operational amplifier Q3 and four-operational amplifier Q4 and carry out secondary amplification, the voltage signal exported by the signal output part of four-operational amplifier Q4 the most at last is directly delivered in oscillograph and shows, and the operational factor getting final product inductance element in completing circuit is measured and Performance Detection.
The converting circuit structure of the present embodiment is simple, is conducive to reducing circuit cost and improving the accuracy detected, and has very strong practicality and market popularization value.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (1)
1. an inductive current change-over circuit, is characterized in that: it comprises the first operational amplifier, the second operational amplifier, the 3rd operational amplifier, four-operational amplifier, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance and the 7th resistance;
The in-phase input end of described first operational amplifier connects the in-phase input end of the second operational amplifier by the first resistance, the inverting input of described first operational amplifier and its signal output part short circuit, the inverting input of described second operational amplifier and its signal output part short circuit;
The signal output part of described first operational amplifier connects the inverting input of the 3rd operational amplifier by the second resistance, the signal output part of described second operational amplifier connects the in-phase input end of the 3rd operational amplifier by the 3rd resistance;
The inverting input of described 3rd operational amplifier connects its signal output part, in-phase input end by the 5th resistance eutral grounding by the 4th resistance, and the signal output part of described 3rd operational amplifier connects the inverting input of four-operational amplifier by the 6th resistance;
The inverting input of described four-operational amplifier connects its signal output part, in-phase input end ground connection by the 7th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357700.1U CN204028156U (en) | 2014-06-30 | 2014-06-30 | A kind of inductive current change-over circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357700.1U CN204028156U (en) | 2014-06-30 | 2014-06-30 | A kind of inductive current change-over circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028156U true CN204028156U (en) | 2014-12-17 |
Family
ID=52067998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420357700.1U Expired - Lifetime CN204028156U (en) | 2014-06-30 | 2014-06-30 | A kind of inductive current change-over circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204028156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106668920A (en) * | 2016-12-12 | 2017-05-17 | 东莞市志诚电器有限公司 | Multifunctional sterilizing and washing integrated machine |
-
2014
- 2014-06-30 CN CN201420357700.1U patent/CN204028156U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106668920A (en) * | 2016-12-12 | 2017-05-17 | 东莞市志诚电器有限公司 | Multifunctional sterilizing and washing integrated machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20150727 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lang Yongbo Inventor after: Jia Likai Inventor after: Wu Hao Inventor after: Zhang Qi Inventor before: Jia Likai Inventor before: Lang Yongbo Inventor before: Wu Hao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: JIA LIKAI LANG YONGBO WU HAO TO: LANG YONGBO JIA LIKAI WU HAO ZHANG QI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150727 Address after: 133000 No. 332 Guangming Street, Yanbian Korean Autonomous Prefecture, Jilin, Yanji Province Patentee after: YANBIAN POWER SUPPLY COMPANY OF STATE GRID JILINSHENG ELECTRIC POWER SUPPLY CO. Patentee after: State Grid Corporation of China Address before: 133000 No. 332 Guangming Street, Yanbian Korean Autonomous Prefecture, Jilin, Yanji Province Patentee before: YANBIAN POWER SUPPLY COMPANY OF STATE GRID JILINSHENG ELECTRIC POWER SUPPLY CO. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141217 |