CN204156824U - A kind of high frequency compensation - Google Patents
A kind of high frequency compensation Download PDFInfo
- Publication number
- CN204156824U CN204156824U CN201420557679.XU CN201420557679U CN204156824U CN 204156824 U CN204156824 U CN 204156824U CN 201420557679 U CN201420557679 U CN 201420557679U CN 204156824 U CN204156824 U CN 204156824U
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- electric capacity
- resistance
- negative pole
- diode
- transformer
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Abstract
The utility model discloses a kind of high frequency compensation, comprise transformer, diode, first resistance, second resistance, 3rd resistance, 4th resistance, first electric capacity, second electric capacity, voltage-stabiliser tube and optical coupler, the first end of the secondary winding of described transformer is connected with the positive terminal of diode, the negative pole end of described diode is connected with the second end of the secondary winding of transformer by the first resistance, the negative pole end of described diode is connected with the positive terminal of the first electric capacity, the described negative pole end of the first electric capacity is connected with the second end of the secondary winding of transformer, after described second electric capacity and the second resistant series and the 3rd resistor coupled in parallel be attempted by between the positive terminal on the negative pole end of diode and the former limit of optical coupler.The utility model can accelerate the response speed of whole closed loop greatly, effectively promotes reaction speed during exporting change, and can improve stability and the precision of voltage output.The utility model can be widely used in electronic circuit field.
Description
Technical field
The utility model relates to electronic circuit technology field, particularly relates to a kind of high frequency compensation.
Background technology
In the control circuits such as present lighting ballast, driver and Switching Power Supply, when output voltage changes, all there is the insensitive or abnormal situation that works of control in major part, cause reaction speed when exporting slower, the voltage stability exported is lower, and have influence on the transient fluctuation of input and output, the performance of product reduces significantly, even have influence on use, can only be applied in and require low occasion.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide one can improve response speed, and can promote a kind of high frequency compensation of output stability.
The technical scheme that the utility model adopts is:
A kind of high frequency compensation, comprise transformer, diode, first resistance, second resistance, 3rd resistance, 4th resistance, first electric capacity, second electric capacity, voltage-stabiliser tube and optical coupler, the first end of the secondary winding of described transformer is connected with the positive terminal of diode, the negative pole end of described diode is connected with the second end of the secondary winding of transformer by the first resistance, the negative pole end of described diode is connected with the positive terminal of the first electric capacity, the described negative pole end of the first electric capacity is connected with the second end of the secondary winding of transformer, after described second electric capacity and the second resistant series and the 3rd resistor coupled in parallel be attempted by between the positive terminal on the negative pole end of diode and the former limit of optical coupler, the positive terminal on the former limit of described optical coupler is connected with the negative pole end on the former limit of optical coupler by the 4th resistance, the negative pole end on former limit of described optical coupler is connected with the cathode terminal of voltage-stabiliser tube, second end of the anode tap of described voltage-stabiliser tube and the secondary winding of transformer is all connected to ground.
As further improvement of the utility model, described first electric capacity is electrochemical capacitor.
As further improvement of the utility model, described second electric capacity is high-frequency ceramic electric capacity or laminated body, capacitor.
The beneficial effects of the utility model are:
A kind of high frequency compensation of the utility model is diminished by the impedance passed through by the HFS of voltage, curent change, its variable quantity is added on optical coupler as far as possible, the change of its electric current and voltage is controlled in advance, greatly accelerate the response speed of whole closed loop, reaction speed during effective lifting exporting change, and stability and the precision that can improve voltage output.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Fig. 1 is the circuit theory diagrams of a kind of high frequency compensation of the utility model.
Embodiment
With reference to figure 1, a kind of high frequency compensation of the utility model, comprise transformer NF, diode D1, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, first electric capacity C1, second electric capacity C2, voltage-stabiliser tube ZD and optical coupler U, the first end of the secondary winding of described transformer NF is connected with the positive terminal of diode D1, the negative pole end of described diode D1 is connected with the second end of the secondary winding of transformer NF by the first resistance R1, the negative pole end of described diode D1 is connected with the positive terminal of the first electric capacity C1, the described negative pole end of the first electric capacity C1 is connected with the second end of the secondary winding of transformer NF, after described second electric capacity C2 and the second resistance R2 connects between the positive terminal being attempted by the negative pole end of diode D1 and the former limit of optical coupler U in parallel with the 3rd resistance R3, the positive terminal on the former limit of described optical coupler U is connected with the negative pole end on the former limit of optical coupler U by the 4th resistance R4, the negative pole end on the former limit of described optical coupler U is connected with the cathode terminal of voltage-stabiliser tube ZD, second end of the anode tap of described voltage-stabiliser tube ZD and the secondary winding of transformer NF is all connected to ground.
Be further used as preferred embodiment, described first electric capacity C1 is electrochemical capacitor.
Be further used as preferred embodiment, described second electric capacity C2 is high-frequency ceramic electric capacity or laminated body, capacitor.
Operation principle of the present utility model is: when access power supply, by electrical power storage in transformer NF, when transformer NF primary current rises to certain value, the secondary supply load that releases energy.The utility model circuit exports sampling, and by optical coupler U and voltage-stabiliser tube ZD, the HFS that voltage and current is changed, by little impedance, makes variable quantity be added on optical coupler U as far as possible.
When practical application, exporting change amount can be fed back to the PWM pulse width controller in external circuit by the utility model, controls the conducting of internal high-voltage MOS, forms closed-loop control like this, to reach the effect exporting voltage stabilizing.
The utility model can make whole circuit output voltage more stable, and control electric current and the voltage of high frequency change in advance, the high frequency response speed of whole closed loop is faster.
More than that better enforcement of the present utility model is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (3)
1. a high frequency compensation, it is characterized in that: comprise transformer (NF), diode (D1), first resistance (R1), second resistance (R2), 3rd resistance (R3), 4th resistance (R4), first electric capacity (C1), second electric capacity (C2), voltage-stabiliser tube (ZD) and optical coupler (U), the first end of the secondary winding of described transformer (NF) is connected with the positive terminal of diode (D1), the negative pole end of described diode (D1) is connected with the second end of the secondary winding of transformer (NF) by the first resistance (R1), the negative pole end of described diode (D1) is connected with the positive terminal of the first electric capacity (C1), the negative pole end of described first electric capacity (C1) is connected with the second end of the secondary winding of transformer (NF), between described second electric capacity (C2) and the rear positive terminal being attempted by the negative pole end of diode (D1) and the former limit of optical coupler (U) in parallel with the 3rd resistance (R3) of the second resistance (R2) series connection, the positive terminal on the former limit of described optical coupler (U) is connected with the negative pole end on the former limit of optical coupler (U) by the 4th resistance (R4), the negative pole end on the former limit of described optical coupler (U) is connected with the cathode terminal of voltage-stabiliser tube (ZD), second end of the anode tap of described voltage-stabiliser tube (ZD) and the secondary winding of transformer (NF) is all connected to ground.
2. a kind of high frequency compensation according to claim 1, is characterized in that: described first electric capacity (C1) is electrochemical capacitor.
3. a kind of high frequency compensation according to claim 1, is characterized in that: described second electric capacity (C2) is high-frequency ceramic electric capacity or laminated body, capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420557679.XU CN204156824U (en) | 2014-09-26 | 2014-09-26 | A kind of high frequency compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420557679.XU CN204156824U (en) | 2014-09-26 | 2014-09-26 | A kind of high frequency compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204156824U true CN204156824U (en) | 2015-02-11 |
Family
ID=52514911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420557679.XU Expired - Fee Related CN204156824U (en) | 2014-09-26 | 2014-09-26 | A kind of high frequency compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204156824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026570A (en) * | 2016-01-29 | 2017-08-08 | 亚荣源科技（深圳）有限公司 | Voltage supply module |
-
2014
- 2014-09-26 CN CN201420557679.XU patent/CN204156824U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026570A (en) * | 2016-01-29 | 2017-08-08 | 亚荣源科技（深圳）有限公司 | Voltage supply module |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20210926 |