CN203761298U - Pulse constant-current source - Google Patents
Pulse constant-current source Download PDFInfo
- Publication number
- CN203761298U CN203761298U CN201320891497.1U CN201320891497U CN203761298U CN 203761298 U CN203761298 U CN 203761298U CN 201320891497 U CN201320891497 U CN 201320891497U CN 203761298 U CN203761298 U CN 203761298U
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- CN
- China
- Prior art keywords
- energy storage
- switching tube
- storage inductor
- power supply
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000004146 energy storage Methods 0.000 claims abstract description 29
- 230000001939 inductive effect Effects 0.000 claims abstract description 9
- 230000005284 excitation Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Generation Of Surge Voltage And Current (AREA)
Abstract
The utility model discloses a pulse constant-current source which comprises a direct-current power supply, an energy storage inductor, a switching tube and a diode. A positive electrode of the direct-current power supply is connected with one end of the energy storage inductor, and the other end of the energy storage inductor is connected with a negative electrode of the direct-current power supply through the switching tube and a load. A collector of the switching tube is connected with the energy storage inductor and a negative electrode of the diode. An emitter of the switching tube is connected with the negative electrode of the direct-current power supply and a positive electrode of the diode. With the adoption of the above-mentioned structure, the pulse constant-current source has the following advantages that 1) the pulse constant-current source outputs constant-current pulses by utilizing inductance energy storage and the characteristic that inductive current cannot be changed suddenly; and 2) the power supply efficiency is improved, the output voltage is high in safety performance, and the size of the pulse constant-current source is small.
Description
Technical field
The utility model relates to a kind of pulsed constant current supply.
Background technology
Current pulsed constant current supply is all to utilize connect large resistance of high voltage source to realize, and when resistance is during much larger than load resistance, output device has constant-current characteristics, but power-efficient is lower, and output voltage higher-security is poor simultaneously, and volume is larger.
Utility model content
Technical problem to be solved in the utility model is, for the deficiencies in the prior art, provides a kind of power-efficient, pulsed constant current supply that output voltage fail safe is large of improving.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of pulsed constant current supply, comprise DC power supply, energy storage inductor, switching tube and diode, the positive pole of described DC power supply is connected with energy storage inductor one end, the described energy storage inductor other end is connected with the negative pole of DC power supply by switching tube, load respectively, the collector electrode of described switching tube is connected with energy storage inductor, diode cathode respectively, and the emitter of described switching tube is connected with negative pole, the diode cathode of DC power supply respectively.
In described switching tube conducting state, described DC power supply, to energy storage inductor excitation, remains unchanged when energy storage inductor electric current reaches set point, when detecting burst enable signal, switching tube disconnects, energy storage inductor powering load, keeps current constant, until end-of-pulsing.
Described load is the mixed load of any several persons in capacitive/inductive/resistance/vacuum loading or four.
The utility model adopts said structure, has the following advantages: the characteristic output constant current pulse that 1, utilizes inductive energy storage and inductive current not to suddenly change; 2, improve power-efficient, output voltage fail safe is large, volume is little.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;
Fig. 1 is circuit structure diagram of the present utility model;
Embodiment
A pulsed constant current supply, comprises DC power supply G1, energy storage inductor L1, switching tube V1 and diode as shown in Figure 1, and switching tube V1 can adopt triode.The positive pole of DC power supply G1 is connected with energy storage inductor L1 one end, the energy storage inductor L1 other end is connected with the negative pole of DC power supply G1 by switching tube V1, load RL respectively, the collector electrode of switching tube V1 is connected with energy storage inductor L1, diode cathode respectively, and the emitter of switching tube V1 is connected with negative pole, the diode cathode of DC power supply G1 respectively.
In switching tube V1 conducting state, DC power supply G1 is to energy storage inductor L1 excitation, when reaching set point, energy storage inductor L1 electric current remains unchanged, switching tube V1 disconnects while burst enable signal being detected, and energy storage inductor L1 powers to load RL by cable, utilizes the inductive current can not catastrophe characteristics, when load RL changes, electric current keeps constant, until end-of-pulsing, switching tube V1 conducting, load RL power-off.Requirement falls in the top that the inductance value of considering energy storage inductor L1 during circuit design can meet design pulsewidth.Load RL is the mixed load of any several persons in capacitive/inductive/resistance/vacuum loading or four.The utility model in load circuit series diode, resistance, inductance etc. to reduce or to eliminate switch V1 conduction period, the impact of the conduction voltage drop of V1 on load.The characteristic output constant current pulse that the utility model utilizes inductive energy storage and inductive current not to suddenly change, with respect to traditional pulsed constant current supply, utilize the high voltage source large resistance of connecting to realize work, the utility model power-efficient is higher, and output voltage fail safe is simultaneously larger, small volume.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as the various improvement that adopted the technical solution of the utility model to carry out; or directly apply to other occasion without improvement, all within protection range of the present utility model.
Claims (3)
1. a pulsed constant current supply, it is characterized in that: comprise DC power supply, energy storage inductor, switching tube and diode, the positive pole of described DC power supply is connected with energy storage inductor one end, the described energy storage inductor other end is connected with the negative pole of DC power supply by switching tube, load respectively, the collector electrode of described switching tube is connected with energy storage inductor, diode cathode respectively, and the emitter of described switching tube is connected with negative pole, the diode cathode of DC power supply respectively.
2. a kind of pulsed constant current supply according to claim 1, it is characterized in that: in described switching tube conducting state, described DC power supply is to energy storage inductor excitation, when reaching set point, energy storage inductor electric current remains unchanged, when detecting burst enable signal, switching tube disconnects, energy storage inductor powering load, keeps current constant, until end-of-pulsing.
3. a kind of pulsed constant current supply according to claim 1, is characterized in that: described load is the mixed load of any several persons in capacitive/inductive/resistance/vacuum loading or four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891497.1U CN203761298U (en) | 2013-12-31 | 2013-12-31 | Pulse constant-current source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891497.1U CN203761298U (en) | 2013-12-31 | 2013-12-31 | Pulse constant-current source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761298U true CN203761298U (en) | 2014-08-06 |
Family
ID=51256529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320891497.1U Expired - Fee Related CN203761298U (en) | 2013-12-31 | 2013-12-31 | Pulse constant-current source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203761298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746594A (en) * | 2013-12-31 | 2014-04-23 | 芜湖国睿兆伏电子有限公司 | Pulse constant-current source |
-
2013
- 2013-12-31 CN CN201320891497.1U patent/CN203761298U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746594A (en) * | 2013-12-31 | 2014-04-23 | 芜湖国睿兆伏电子有限公司 | Pulse constant-current source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 |