CN202160005U - Simple secondary filter constant current charger - Google Patents
Simple secondary filter constant current charger Download PDFInfo
- Publication number
- CN202160005U CN202160005U CN2011202886216U CN201120288621U CN202160005U CN 202160005 U CN202160005 U CN 202160005U CN 2011202886216 U CN2011202886216 U CN 2011202886216U CN 201120288621 U CN201120288621 U CN 201120288621U CN 202160005 U CN202160005 U CN 202160005U
- Authority
- CN
- China
- Prior art keywords
- constant current
- secondary filter
- transformer
- current charger
- capacitor
- 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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Images
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a simple secondary filter constant current charger. A capacitor C1 and a fuse are connected with the primary input end of a transformer B in series; the secondary output end of the transformer B is connected with the input end of a bridge rectifier circuit D1-4; and the output end of the bridge rectifier circuit D1-4 is connected with a secondary filter capacitor C2, a secondary filter capacitor C3 and a load RL. The simple secondary filter constant current charger not only has simple circuit and low manufacture cost, but also has very low power consumption, high reliability and good safety. Moreover, the temperature of the transformer can not be changed greatly even if the simple secondary filter constant current charger works continuously for a long period of time.
Description
Technical field
The utility model relates to a kind of charger, relates in particular to a kind of simple and easy secondary filtering constant current charger.
Background technology
In some charging circuits, people usually adopt transistor electronic circuit or power module to add the purpose that accessory circuit reaches constant current, though this perseverance is so effective, circuit is comparatively complicated, and cost of manufacture is also higher.
The utility model content
To above-mentioned deficiency, it is simple that the purpose of the utility model provides a kind of circuit, the simple and easy secondary filtering constant current charger that cost is low.
To achieve these goals, the technical scheme that the utility model adopts is: this simple and easy secondary filtering constant current charger is connected in series a capacitor C at the elementary input of transformer B
1With a fuse; The secondary output termination bridge rectifier D of transformer B
1-4Input, bridge rectifier D
1-4Output termination secondary filter capacitor C
2, C
3And load R
L, capacitor C
1Capacitive reactance should be greater than the induction reactance of the primary input terminal of transformer B, when the impedance at the secondary two ends of transformer B increased, the elementary impedance of transformer B also increased thereupon, because capacitor C
1Be certain value, the capacitive reactance of its input reduces, and primary current increases, and secondary voltage is increased; Otherwise primary current reduces, and secondary voltage reduces; Capacitor C
2, C
3Be the secondary filter capacitor after the rectification.
As preferably, said filter capacitor C
2, C
3Be electrochemical capacitor
Compared with prior art; The utility model has the advantages that: not only circuit is simple for this secondary filtering constant current charger; Cost of manufacture is low, and power consumption is very little, reliability is high, fail safe is good, and big variation does not take place the temperature of continuous operation transformer yet for a long time.
Description of drawings
Fig. 1 is the structure line map of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Referring to Fig. 1, the simple and easy secondary filtering constant current charger of the utility model is connected in series a capacitor C at the elementary input of transformer B
1With a fuse; The secondary output termination bridge rectifier D of transformer B
1-4Input, bridge rectifier D
1-4Output termination secondary filter capacitor C
2, C
3And load R
LSaid filter capacitor C
2, C
3Be electrochemical capacitor.
Claims (2)
1. simple and easy secondary filtering constant current charger, it is characterized in that: the elementary input at transformer B is connected in series a capacitor C
1With a fuse; The secondary output termination bridge rectifier D of transformer B
1-4Input, bridge rectifier D
1-4Output termination secondary filter capacitor C
2, C
3And load R
L
2. simple and easy secondary filtering constant current charger according to claim 1 is characterized in that said filter capacitor C
2, C
3Be electrochemical capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202886216U CN202160005U (en) | 2011-08-02 | 2011-08-02 | Simple secondary filter constant current charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202886216U CN202160005U (en) | 2011-08-02 | 2011-08-02 | Simple secondary filter constant current charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202160005U true CN202160005U (en) | 2012-03-07 |
Family
ID=45767628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202886216U Expired - Fee Related CN202160005U (en) | 2011-08-02 | 2011-08-02 | Simple secondary filter constant current charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202160005U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669910A (en) * | 2019-01-29 | 2019-04-23 | 汕头市伊达时电子实业有限公司 | A kind of calculator |
| CN118283875A (en) * | 2024-06-03 | 2024-07-02 | 佛山市伊戈尔电子有限公司 | Filter circuit for dimming circuit |
-
2011
- 2011-08-02 CN CN2011202886216U patent/CN202160005U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669910A (en) * | 2019-01-29 | 2019-04-23 | 汕头市伊达时电子实业有限公司 | A kind of calculator |
| CN118283875A (en) * | 2024-06-03 | 2024-07-02 | 佛山市伊戈尔电子有限公司 | Filter circuit for dimming circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20120802 |