CN204205628U - A kind of photoflash lamp is wired back system fast - Google Patents
A kind of photoflash lamp is wired back system fast Download PDFInfo
- Publication number
- CN204205628U CN204205628U CN201420491445.XU CN201420491445U CN204205628U CN 204205628 U CN204205628 U CN 204205628U CN 201420491445 U CN201420491445 U CN 201420491445U CN 204205628 U CN204205628 U CN 204205628U
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- circuit
- filter circuit
- transformer
- photoflash lamp
- pwm1
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- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
The utility model discloses a kind of photoflash lamp to wire back fast system, comprise PWM1, filter circuit 1, PWM2, filter circuit 2, commutation circuit, transformer, rectification circuit and electric capacity.Wherein PWM1 is connected with filter circuit 1, and PWM2 is connected with filter circuit 2, PWM1 and PWM2 produces PWM (pulse-width modulation) signal, for charging; Filter circuit 1 is connected with commutation circuit with filter circuit 2, for carrying out filtering to pwm signal; Commutation circuit is connected with transformer, alternately switching, improving speed for carrying out two-way pwm signal; Transformer is connected with rectification circuit, for changing voltage; Rectification circuit is connected with electric capacity, for carrying out rectification to transformer output current.Native system controls charging circuit by using two-way PWM, solve conventional flash lamp capacitor charging speed slow, controlled by single channel PWM, precision comparison defect rambunctious.
Description
Technical field
The utility model relates to a kind of photoflash lamp and to wire back fast system.
Background technology
Along with social economy's develop rapidly, the progressively raising of living standards of the people, slr camera popularity rate increases year by year, and kind is on the increase.Constantly weed out the old and bring forth the new in market.Corresponding photoflash lamp too, market makes rapid progress.Function constantly increases, and structure is more novel, and cost is cheaper.Telegram in reply speed now after flash fire is commercially general slower, so the quick telegram in reply System Market space of this photoflash lamp is very large, and based on traditional single channel PWM charging technique, novel photoflash lamp fast telegram in reply system apply on product be also adapt to era development.Traditional photoflash lamp battery after carrying out high-power flash of light is again slow to the speed of bulky capacitor charging, and for cameraman, this makes a kind of defect undoubtedly, thus develop a kind of photoflash lamp fast telegram in reply system be determined to win.Native system have modified original charging circuit for flashlamp, designs two-way PWM charging circuit, exports PWM frequency higher, charging rate is faster, allow user make more to follow one's bent at use photoflash lamp, along with the development in epoch, this novel photoflash lamp fast telegram in reply system will more be liked by people.
Utility model content
System that the object that the utility model solves is to provide that a kind of structure is simple, the photoflash lamp of dependable performance is wired back fast, solve conventional flash lamp capacitor charging speed slow, controlled by single channel PWM, precision comparison defect rambunctious.
The utility model be achieved in that a kind of photoflash lamp fast telegram in reply system comprise PWM1, filter circuit 1, PWM2, filter circuit 2, commutation circuit, transformer, rectification circuit and electric capacity;
Described PWM1 is connected with filter circuit 1, and PWM2 is connected with filter circuit 2, PWM1 and PWM2 produces PWM (pulse-width modulation) signal, for charging;
Described filter circuit 1 is connected with commutation circuit with filter circuit 2, for carrying out filtering to pwm signal;
Described commutation circuit is connected with transformer, alternately switching, improving speed for carrying out two-way pwm signal;
Described transformer is connected with rectification circuit, for changing voltage;
Described rectification circuit is connected with electric capacity, for carrying out rectification to transformer output current;
Described electric capacity is used for charging.
effect gathers
Native system controls charging circuit by using two-way PWM, solve conventional flash lamp capacitor charging speed slow, controlled by single channel PWM, precision comparison defect rambunctious, enable user have good experience.
Accompanying drawing explanation
Fig. 1 is that a kind of photoflash lamp that the utility model embodiment provides is wired back system construction drawing fast;
Wherein: 1, PWM1; 2, filter circuit 1; 3, PWM2; 4, filter circuit 2; 5, commutation circuit; 6, transformer; 7, rectification circuit; 8, electric capacity.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 illustrates a kind of photoflash lamp of the present utility model and to wire back fast system configuration, as shown in the figure, the utility model be achieved in that a kind of photoflash lamp fast telegram in reply system comprise PWM11, filter circuit 12, PWM23, filter circuit 24, commutation circuit 5, transformer 6, rectification circuit 7 and electric capacity 8;
PWM11 is connected with filter circuit 12, and PWM23 is connected with filter circuit 24, PWM11 and PWM23 produces PWM (pulse-width modulation) signal, for charging;
Filter circuit 12 is connected with commutation circuit 5 with filter circuit 24, for carrying out filtering to pwm signal;
Commutation circuit 5 is connected with transformer 6, alternately switching, improving speed for carrying out two-way pwm signal;
Transformer 6 is connected with rectification circuit 7, for changing voltage;
Rectification circuit 7 is connected with electric capacity 8, for carrying out rectification to transformer 6 output current;
Electric capacity 8 is for charging;
Photoflash lamp charge inside circuit carries out alternately controlling to transformer by two-way PWM, makes operating frequency can reach higher, improves the charging rate of electric capacity greatly.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection range; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that performing creative labour can make still within protection range of the present utility model.
Claims (5)
1. photoflash lamp is wired back a system fast, and it is characterized in that, this system comprises PWM1, filter circuit 1, PWM2, filter circuit 2, commutation circuit, transformer, rectification circuit and electric capacity;
Wherein PWM1 is connected with filter circuit 1, and PWM2 is connected with filter circuit 2, PWM1 and PWM2 produces PWM (pulse-width modulation) signal, for charging;
Filter circuit 1 is connected with commutation circuit with filter circuit 2, for carrying out filtering to pwm signal;
Commutation circuit is connected with transformer, alternately switching, improving speed for carrying out two-way pwm signal;
Transformer is connected with rectification circuit, for changing voltage;
Rectification circuit is connected with electric capacity, for carrying out rectification to transformer output current;
Electric capacity is used for charging.
2. photoflash lamp according to claim 1 is wired back system fast, and it is characterized in that, described PWM1, PWM2 signal is sent by main control chip.
3. photoflash lamp according to claim 1 is wired back system fast, and it is characterized in that, described filter circuit 1 and filter circuit 2 pairs of pwm signals carry out filtering, removes the burr signal in waveform, makes waveform more accurately stable.
4. photoflash lamp according to claim 1 is wired back system fast, and it is characterized in that, described transformer can change magnitude of voltage, produces the voltage being applicable to capacitor charging.
5. photoflash lamp according to claim 1 is wired back system fast, and it is characterized in that, the electric current that described rectification circuit makes transformer export is more steady.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491445.XU CN204205628U (en) | 2014-08-28 | 2014-08-28 | A kind of photoflash lamp is wired back system fast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491445.XU CN204205628U (en) | 2014-08-28 | 2014-08-28 | A kind of photoflash lamp is wired back system fast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204205628U true CN204205628U (en) | 2015-03-11 |
Family
ID=52663545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420491445.XU Expired - Fee Related CN204205628U (en) | 2014-08-28 | 2014-08-28 | A kind of photoflash lamp is wired back system fast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204205628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234704A (en) * | 2020-10-12 | 2021-01-15 | 维沃移动通信有限公司 | Flash lamp power supply switching circuit, flash lamp control method and electronic equipment |
-
2014
- 2014-08-28 CN CN201420491445.XU patent/CN204205628U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234704A (en) * | 2020-10-12 | 2021-01-15 | 维沃移动通信有限公司 | Flash lamp power supply switching circuit, flash lamp control method and electronic equipment |
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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: 20150311 Termination date: 20160828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |