CN201113524Y - Non-polar charger circuit - Google Patents
Non-polar charger circuit Download PDFInfo
- Publication number
- CN201113524Y CN201113524Y CNU2007200281195U CN200720028119U CN201113524Y CN 201113524 Y CN201113524 Y CN 201113524Y CN U2007200281195 U CNU2007200281195 U CN U2007200281195U CN 200720028119 U CN200720028119 U CN 200720028119U CN 201113524 Y CN201113524 Y CN 201113524Y
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- CN
- China
- Prior art keywords
- diode
- resistor
- circuit
- triode
- bidirectional thyristor
- 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 relates to a nonpolarity charger circuit belonging to the battery charging circuit field. The technical proposal of the utility model is as follows: an output end of a power transformer B is symmetrically connected with two groups of polarity recognition converting circuits which are respectively connected with a resistor R1 and a resistor R3 in series through a bidirectional thyristor SCR1 and a bidirectional thyristor SCR2, and are connected to a triode BG1 and a triode BG2 respectively; base electrodes of the triodes (BG1 and BG2) are respectively connected with a resistor R2 and a resistor R4 respectively, emitting electrodes are connected with corresponding output ends of the other group of the polarity recognition converting circuit after being respectively connected with a diode D2 and a diode D4 in series; and a diode D1 and the diode D2 are respectively connected to the bidirectional thyristor SCR1 and the bidirectional thyristor SCR2 in parallel. The nonpolarity charger circuit has the advantages of simple structure and convenient manufacture, can be used without concerning a charging polarity of a battery, can facilitate application, and is particularly suitable for a charger of a mobile phone.
Description
Technical field
The utility model relates to the nonpolarity charger circuit in battery charger field.
Background technology
Present all kinds of battery chargers are of a great variety, but all have a common characteristic, are exactly to connect by correct electric power polarity, otherwise will burn battery or charger.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, and a kind of nonpolarity charger circuit of automatic identification polarity is provided.
Its technical scheme is: connecting two groups of polarity identification change-over circuits from the output symmetry of power transformer B, every group of polarity identification change-over circuit is connected to triode BG1 and BG2 by bidirectional triode thyristor SCR1 and SCR2 series resistance R1 and R3, triode (base stage of BG1 and BG2 be connected in series respectively resistance R 2 and R4, be connected with corresponding another group output behind series diode D2 and the D4 respectively on the emitter, and on separately bidirectional triode thyristor SCR1 and SCR2 parallel diode D1 and D2.
The utlity model has simple in structurely, easy to make, during use, need not to consider the charging polarity of battery, the convenient use is particularly suitable for charger for mobile phone.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.IN is the power supply input among the figure; DC1, DC2 represent two kinds of charging polarity modes.
Embodiment
Be further described with operation principle with regard to its circuit formation below in conjunction with accompanying drawing: transformer B is connected rectifier diode D1, D3 and forms main step-down rectifying circuit; Bidirectional triode thyristor SCR1, SCR2 are connected in parallel on rectifier diode D1, D3 two ends; Triode BG1 connects resistance R 1, R2, diode D2 form positive polarity identification change-over circuit; Triode BG2 connects resistance R 3, R4, diode D4 form negative polarity identification change-over circuit.During charging, when connecting into the DC1 state, form positive polarity identification change-over circuit by triode BG1 connection resistance R 1, R2, diode D2 and get positive voltage work as battery, bidirectional triode thyristor SCR1 conducting, bidirectional triode thyristor SCR2 ends, M point output positive voltage, charging operate as normal; Otherwise, when battery connects into the DC2 state, form negative polarity identification change-over circuit by triode BG connection resistance R 3, R4, diode D4 and get positive voltage work, bidirectional triode thyristor SCR2 conducting, bidirectional triode thyristor SCR1 ends, M point output negative voltage, charging operate as normal; Realization polarity is changed automatically.
Claims (1)
1, a kind of nonpolarity charger circuit, it is characterized in that: connecting two groups of polarity identification change-over circuits from the output symmetry of power transformer (B), every group of polarity identification change-over circuit is connected to triode (BG1, BG2) by bidirectional triode thyristor (SCR1, SCR2) series resistance (R1, R3), the base stage of triode (BG1, the BG2) resistance (R2, R4) that is connected in series respectively, respectively series diode (D2, D4) back and another corresponding group output connection on the emitter, and at the last parallel diode (D1, D2) of separately bidirectional triode thyristor (SCR1, SCR2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200281195U CN201113524Y (en) | 2007-09-19 | 2007-09-19 | Non-polar charger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200281195U CN201113524Y (en) | 2007-09-19 | 2007-09-19 | Non-polar charger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113524Y true CN201113524Y (en) | 2008-09-10 |
Family
ID=39965269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200281195U Expired - Fee Related CN201113524Y (en) | 2007-09-19 | 2007-09-19 | Non-polar charger circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201113524Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013720A (en) * | 2010-11-10 | 2011-04-13 | 李秉哲 | Charger capable of automatically identifying polarity of storage battery |
-
2007
- 2007-09-19 CN CNU2007200281195U patent/CN201113524Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013720A (en) * | 2010-11-10 | 2011-04-13 | 李秉哲 | Charger capable of automatically identifying polarity of storage battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |