CN204013265U - The constant-current source of high frequency and high voltage sine waveform power supply power supply - Google Patents
The constant-current source of high frequency and high voltage sine waveform power supply power supply Download PDFInfo
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- CN204013265U CN204013265U CN201420293465.6U CN201420293465U CN204013265U CN 204013265 U CN204013265 U CN 204013265U CN 201420293465 U CN201420293465 U CN 201420293465U CN 204013265 U CN204013265 U CN 204013265U
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- constant
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- electrodeless electric
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Abstract
The utility model relates to the constant-current source of high frequency and high voltage sine waveform power supply power supply, comprise the rectification module being connected with feeder ear, the two ends of described rectification module are connected in parallel to dead resistance R4 and electrodeless electric capacity C1, described electrodeless electric capacity C1 one end is connected with the power end of constant-current driven module, the feedback end of described constant-current driven module is connected with resistance R 1 and the resistance R 2 being connected in parallel, the drive end of described constant-current driven module is connected with the control end of metal-oxide-semiconductor VT1, the drain electrode of metal-oxide-semiconductor VT1 connects sustained diode 5, the two ends of described sustained diode 5 are connected in parallel to inductor L1 and the electrodeless electric capacity C3 being connected in series, described sustained diode 5 negative poles are connected with described rectification module output, the two ends of described electrodeless electric capacity C3 connect constant-current source lead-out terminal.The utlity model has and export constant, the advantage stable, long service life of powering.
Description
Technical field
The utility model relates to illumination brightening power supply technique field, is specifically related to a kind of constant-current source of high frequency and high voltage sine waveform power supply power supply.
Background technology
LED luminous element generally has two kinds of supply power modes at present, the first is to concentrate low-voltage direct bussed supply mode, by AC/DC variator, the alternating current of 220V/50HZ is become to the DC power supply of 5V-36V, and add suitable voltage according to the requirement of lamppost, power supply is by a DC bus transmitting energy, all LED lamps are connected in DC bus two ends in parallel, when connect LED lamp is more, circuit is long, owing to being that low-voltage transmission loss is larger, step-down is serious, the brightness disproportionation that causes LED lamp, the second is to concentrate the ac bus distributed step-down rectifier mode of powering, it is to using 220V/50HZ interchange as bus, each LED lamp carries power frequency step-down transformer and rectifier, 220V/50HZ is become to low-voltage direct, the volume of power frequency step-down transformer is larger, weight is larger, distribute heat is also many, when connect LED lamp is more, the volume of whole luminous element is increased, weight increases, requirement to heat radiation is higher.
In above-mentioned supply power mode, make the LED lamp in circuit obtain stable brightness, the voltage drop of stable power-supplying circuit, needs pressure drop constant, therefore need to introduce constant-current source.Filter capacitor in existing constant-current source is all used electrochemical capacitor, due to the characteristic of electrochemical capacitor itself, and easily dry, inefficacy, in use procedure, in constant-current source circuit, easily occur clutter, usually occur not start, or What is more burns out the LED luminescence component in supply line.These disadvantages never solve in the prior art, and people exist this prejudice always, think the filter effect that filter capacitor can only adopt electrochemical capacitor to have obtained, even if it has these disadvantages.
Summary of the invention
The purpose of this utility model is in order to solve the problems of the technologies described above, and a kind of constant-current source that can provide stable constant current, power supply high frequency and high voltage sine waveform power supply stable, long service life to power is provided.
For achieving the above object, the constant-current source of a kind of high frequency and high voltage sine waveform power supply power supply of the utility model design, comprise the rectification module being connected with feeder ear, the two ends of described rectification module are connected in parallel to dead resistance R4 and electrodeless electric capacity C1, described electrodeless electric capacity C1 one end is connected with the power end of constant-current driven module, the feedback end of described constant-current driven module is connected with resistance R 1 and the resistance R 2 being connected in parallel, the drive end of described constant-current driven module is connected with the control end of metal-oxide-semiconductor VT1, the drain electrode of metal-oxide-semiconductor VT1 connects sustained diode 5, the two ends of described sustained diode 5 are connected in parallel to inductor L1 and the electrodeless electric capacity C3 being connected in series, described sustained diode 5 negative poles are connected with described rectification module output, the two ends of described electrodeless electric capacity C3 connect constant-current source lead-out terminal.
In technique scheme, described rectification module is full bridge rectifier.
The sine wave that is input as of the present utility model, overcome existing people's a kind of above-mentioned prejudice, adopt electrodeless electric capacity as the filtering device in constant-current source circuit, not only can obtain the filter effect of original electrochemical capacitor completely, and overcome the dry drawback easily losing efficacy of electrochemical capacitor, have advantages of that output is constant, power supply is stable, long service life.
Accompanying drawing explanation
Fig. 1 is the utility model circuit diagram;
In figure: 1-feeder ear; 2-rectification module; 3-constant-current driven module.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The constant-current source of high frequency and high voltage sine waveform power supply power supply as shown in Figure 1, the two ends of rectification module 2 are connected in parallel to dead resistance R4 and electrodeless electric capacity C1, described electrodeless electric capacity C1 one end is connected with the power end of constant-current driven module 3, the feedback end of constant-current driven module 3 is connected with resistance R 1 and the resistance R 2 being connected in parallel, the drive end of constant-current driven module 3 is connected with the control end of metal-oxide-semiconductor VT1, the drain electrode of metal-oxide-semiconductor VT1 connects sustained diode 5, the two ends of sustained diode 5 are connected in parallel to inductor L1 and the electrodeless electric capacity C3 being connected in series, sustained diode 5 negative poles are connected with described rectification module 2 outputs, the two ends of described electrodeless electric capacity C3 connect constant-current source lead-out terminal.Rectification module 2 is full bridge rectifier.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model, like this, within if of the present utility model these are revised and modification belongs to the utility model claim and equivalent technologies scope thereof, the utility model is also intended to comprise these changes and modification interior.
The content not being described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (2)
1. the constant-current source of high frequency and high voltage sine waveform power supply power supply, comprise the rectification module (2) being connected with feeder ear (1), it is characterized in that: the two ends of described rectification module (2) are connected in parallel to dead resistance R4 and electrodeless electric capacity C1, described electrodeless electric capacity C1 one end is connected with the power end of constant-current driven module (3), the feedback end of described constant-current driven module (3) is connected with resistance R 1 and the resistance R 2 being connected in parallel, the drive end of described constant-current driven module (3) is connected with the control end of metal-oxide-semiconductor VT1, the drain electrode of metal-oxide-semiconductor VT1 connects sustained diode 5, the two ends of described sustained diode 5 are connected in parallel to inductor L1 and the electrodeless electric capacity C3 being connected in series, described sustained diode 5 negative poles are connected with described rectification module (2) output, the two ends of described electrodeless electric capacity C3 connect constant-current source lead-out terminal.
2. the constant-current source of high frequency and high voltage sine waveform power supply power supply according to claim 1, is characterized in that: described rectification module (2) is full bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420293465.6U CN204013265U (en) | 2014-06-04 | 2014-06-04 | The constant-current source of high frequency and high voltage sine waveform power supply power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420293465.6U CN204013265U (en) | 2014-06-04 | 2014-06-04 | The constant-current source of high frequency and high voltage sine waveform power supply power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204013265U true CN204013265U (en) | 2014-12-10 |
Family
ID=52053200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420293465.6U Expired - Fee Related CN204013265U (en) | 2014-06-04 | 2014-06-04 | The constant-current source of high frequency and high voltage sine waveform power supply power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204013265U (en) |
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2014
- 2014-06-04 CN CN201420293465.6U patent/CN204013265U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160407 Address after: 101, room 47, building 1244, 430080 Heping Avenue, Qingshan District, Hubei, Wuhan Patentee after: RIVERBAY (WUHAN) OPTOELECTRONIC TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 430010 Hubei city of Wuhan province Zhao Wei Cun, Jiang'an District Road No. 7 Patentee before: TIANYI HONGYE WUHAN TECHNOLOGY DEVELOPMENT CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 |