CN203027568U - Power factor correcting circuit - Google Patents
Power factor correcting circuit Download PDFInfo
- Publication number
- CN203027568U CN203027568U CN 201320001551 CN201320001551U CN203027568U CN 203027568 U CN203027568 U CN 203027568U CN 201320001551 CN201320001551 CN 201320001551 CN 201320001551 U CN201320001551 U CN 201320001551U CN 203027568 U CN203027568 U CN 203027568U
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- CN
- China
- Prior art keywords
- resistance
- power factor
- diode
- resistor
- triode
- 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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Abstract
The utility model discloses a power factor correcting circuit. The power factor correcting circuit comprises a first diode, a second diode, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor and a triode, wherein the first diode, the first resistor, the second resistor and the third resistor are sequentially connected in series, the third resistor, the first capacitor and the second capacitor are connected in parallel, the second resistor and the third resistor are connected with the drain of the triode, and the second diode is connected with the grid of the triode. The power factor correcting circuit disclosed by the utility model has the advantages of keeping output power unchanged and effectively utilizing resources.
Description
Technical field
The utility model relates to a kind of correcting circuit, particularly relates to a kind of power factor correction circuit.
Background technology
The LED drive circuit commonly used that surpasses 75w all will have power factor correction circuit, each national city's voltage is different (such as 100V is arranged, 240V, 220V etc.), the power factor (PF) value step-down if power factor correction circuit is not distinguished is if distinguish power factor correction circuit the cost up of element used.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of power factor correction circuit, and it keeps power output constant, efficent use of resources.
the utility model solves above-mentioned technical problem by following technical proposals: a kind of power factor correction circuit, it is characterized in that, it comprises the first diode, the second diode, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the second electric capacity, triode, described the first diode, the first resistance, the second resistance, the 3rd resistance is connected successively, described the 3rd resistance, the first electric capacity, in parallel between the second electric capacity three, described the second resistance, the 3rd resistance all is connected with the drain electrode of described triode, described the second diode is connected with the grid of described triode.
Preferably, the source ground of described triode.
Preferably, described triode is enhancement mode field effect transistor.
Positive progressive effect of the present utility model is: the utility model power factor correction circuit keeps power output constant, efficent use of resources.
Description of drawings
Fig. 1 is the schematic diagram of a kind of power factor correction circuit of the utility model.
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
as shown in Figure 1, a kind of power factor correction circuit of the utility model, comprise the first diode D1, the second diode D2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the first capacitor C 1, the second capacitor C 2, triode Q1, the first diode D1, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3 is connected successively, the 3rd resistance R 3, the first capacitor C 1, in parallel between the second capacitor C 2 threes, the second resistance R 2, the 3rd resistance R 3 all is connected with the drain electrode of triode Q1, the second diode D2 is connected with the grid of triode Q1, the source ground of triode Q1.Triode Q1 can be enhancement mode field effect transistor.The 3rd resistance R 3, the first capacitor C 1, the second capacitor C 2 be ground connection all.
The first electric capacity is used for the filtering high-frequency signal, the second electric capacity is used for the filtering low frequency signal, output LOW voltage when low-voltage, output HIGH voltage when high voltage, electric current is changing according to low-voltage and high-tension situation, it is constant that the utility model power factor correction circuit keeps power output like this, efficent use of resources.
Those skilled in the art can carry out various remodeling and change to the utility model.Therefore, the utility model has covered various remodeling and the change in the scope that falls into appending claims and equivalent thereof.
Claims (3)
1. power factor correction circuit, it is characterized in that, it comprises the first diode, the second diode, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the second electric capacity, triode, described the first diode, the first resistance, the second resistance, the 3rd resistance are connected successively, in parallel between described the 3rd resistance, the first electric capacity, the second electric capacity three, described the second resistance, the 3rd resistance all are connected with the drain electrode of described triode, and described the second diode is connected with the grid of described triode.
2. a kind of power factor correction circuit as claimed in claim 1, is characterized in that, the source ground of described triode.
3. a kind of power factor correction circuit as claimed in claim 1, is characterized in that, described triode is enhancement mode field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320001551 CN203027568U (en) | 2013-01-04 | 2013-01-04 | Power factor correcting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320001551 CN203027568U (en) | 2013-01-04 | 2013-01-04 | Power factor correcting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203027568U true CN203027568U (en) | 2013-06-26 |
Family
ID=48651506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320001551 Expired - Fee Related CN203027568U (en) | 2013-01-04 | 2013-01-04 | Power factor correcting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203027568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109511201A (en) * | 2018-12-26 | 2019-03-22 | 南京邮电大学 | A kind of energy-saving LED lamp switch power |
-
2013
- 2013-01-04 CN CN 201320001551 patent/CN203027568U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109511201A (en) * | 2018-12-26 | 2019-03-22 | 南京邮电大学 | A kind of energy-saving LED lamp switch power |
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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: 20130626 Termination date: 20150104 |
|
| EXPY | Termination of patent right or utility model |