CN101677207A - Universal DC power supply device - Google Patents
Universal DC power supply device Download PDFInfo
- Publication number
- CN101677207A CN101677207A CN200810149315A CN200810149315A CN101677207A CN 101677207 A CN101677207 A CN 101677207A CN 200810149315 A CN200810149315 A CN 200810149315A CN 200810149315 A CN200810149315 A CN 200810149315A CN 101677207 A CN101677207 A CN 101677207A
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- CN
- China
- Prior art keywords
- direct current
- resistor
- current conversion
- conversion socket
- voltage
- 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.)
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The invention provides a universal DC power supply device, which is a design of a socket and a plug and comprises: the direct current conversion socket and the voltage plug are attached to various electronic products; the battery or the commercial AC power supply provides DC power to the input end of the DC conversion socket through the rectification adapter, and the output end of the DC conversion socket is connected with the voltage plug, so that various electronic products can be used by matching with any AC power supply through the universal DC power supply device.
Description
Technical field
The present invention is a kind of universal direct-current power source supply device, refers in particular to a kind of design of socket and plug.
Background technology
General in the world city AC power has two kinds of 110V and 220V, and various electronic products must cooperate the city AC power respectively and design.For the traveller, first the electronic product bought arrived second ground and may not use because the city AC power difference of two places.
Though existing various rectification adapters (Adapter) can convert the city AC power on second ground to first local specialties required direct current, but must dispose separately rectification adapter respectively for each electronic product, if carry several electronic product travellings, the rectification adapter that then carries is too many, and is very inconvenient.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of universal direct-current power source supply device, is a kind of design of socket and plug, makes various electronic products can borrow universal direct-current power source supply device of the present invention to cooperate arbitrary AC power and use.
For achieving the above object, the invention provides a kind of universal direct-current power source supply device, comprise:
The direct current conversion socket has direct current conversion IC, resistor R 1 and R2; The direct current conversion IC has output voltage and feedback voltage, and this feedback voltage links to each other with contact between resistor R 1, R2, resistor R 1 other end ground connection, and the other end of resistor R 2 then forms the output two ends of this direct current conversion socket with this output voltage;
The voltage plug has resistor R 3; This voltage plug invests on the various electronic products, and after this voltage plug inserted this direct current conversion socket, resistor R 3 two ends were connected with the output two ends of this direct current conversion socket;
Add the rectification adapter, the output of rectification adapter is connected with the input of direct current conversion socket, after the city AC power on the input connection wall of this rectification adapter, converts the city alternating current to direct current, sends into the input of direct current conversion socket;
Also the output of battery can be connected with the input of direct current conversion socket, provide direct current to send into the input of direct current conversion socket.
Use universal direct-current power source supply device of the present invention, can reach the effect that makes various electronic products cooperate arbitrary AC power and use, so the electronic product of any electronic product of portability manufacturer uses local city AC power to various places, very convenient.
Description of drawings
Fig. 1 is the theory diagram of universal direct-current power source supply device of the present invention;
Fig. 2 is the circuit diagram of universal direct-current power source supply device of the present invention;
Fig. 3 is the use battery figure of universal direct-current power source supply device of the present invention.
Description of reference numerals
1 rectification adapter
2 direct current conversion sockets
21 direct current conversion IC
3 voltage plugs
4 batteries
The R1 resistor
The R2 resistor
The R3 resistor
The R4 resistor
The C1 capacitor
The Vout output voltage
The Vfb feedback voltage
Embodiment
Ask for an interview Fig. 1, be principle of the invention block diagram, wherein comprise rectification adapter 1, direct current conversion socket 2 and voltage plug 3.Rectification adapter 1 converts the city alternating current on the wall to direct current, sends into direct current conversion socket 2, cooperates voltage plug 3 and converts the direct current of various required by electronic product to.
Ask for an interview Fig. 2, be the circuit diagram of direct current conversion socket 2 with voltage plug 3.Direct current conversion socket 2 comprises direct current conversion IC 21 (AX-310x is AXElite Technology Co., the product of Ltd.) (or LM3478, LM3488, be the product of National Semiconductor), resistor R 1 and R2.Voltage plug 3 comprises resistor R 3, capacitor C1 and resistor R 4.The output voltage V out of direct current conversion IC 21 is connected with resistor R 1, R2, R3 as shown in Figure 2 with feedback (Feedback) voltage Vfb.
If use AX-310x, then the Vfb end produces fixing 0.8V voltage, if use LM3478, then the Vfb end produces fixing 1.26V voltage.Therefore according to the principle of dividing potential drop, (1+ (R2+R3)/R1) provides the Vout voltage of voltage plug 3 can borrow the configuration of resistor R 1, R2, R3 and adjust to Vout=Vfb.The Vout voltage of voltage plug 3 is the inner required direct voltage of each electronic product.
The present invention places direct current conversion socket 2 with resistor R 1, R2, but resistor R 3 is placed voltage plug 3.The resistance value of resistor R 1, R2 is fixed, and the resistance value of the resistor R 3 of voltage plug 3 is then by electronic product manufacturer matching design, so can produce the voltage (being Vout voltage) that its required by electronic product is wanted.Capacitor C1 and resistor R 4 are filter circuit.
All electronic product manufacturers cooperate the present invention and design the resistance value of the resistor R 3 of its voltage plug 3, as long as the user purchases direct current conversion socket 2 of the present invention and any rectification adapter 1 of arranging in pairs or groups as a result, the electronic product that is any electronic product of portability manufacturer uses local city AC power to various places, very convenient.
Rectification adapter 1 can change battery 4 into, and as shown in Figure 3, this battery 4 for example is the battery on the automobile, can utilize direct current conversion socket 2 of the present invention to arrange in pairs or groups automobile batteriess and use any electronic product when then the traveller drives.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (4)
1. a universal direct-current power source supply device is characterized in that, comprises:
The direct current conversion socket has direct current conversion IC, resistor R 1 and R2; This direct current conversion IC has output voltage and feedback voltage, and this feedback voltage links to each other with contact between this resistor R 1, R2, this resistor R 1 other end ground connection, and the other end of this resistor R 2 then forms the output two ends of this direct current conversion socket with this output voltage;
The voltage plug has resistor R 3; This voltage plug invests on the various electronic products, and after this voltage plug inserted this direct current conversion socket, resistor R 3 two ends were connected with the output two ends of this direct current conversion socket.
2. universal direct-current power source supply device as claimed in claim 1, it is characterized in that, add the rectification adapter, the output of this rectification adapter is connected with the input of described direct current conversion socket, after the city AC power on the input connection wall of this rectification adapter, convert the city alternating current to direct current, send into the input of described direct current conversion socket.
3. universal direct-current power source supply device as claimed in claim 1 is characterized in that, the output of battery is connected with the input of described direct current conversion socket, provides direct current to send into the input of described direct current conversion socket.
4. as claim 1,2 or 3 described universal direct-current power source supply devices, it is characterized in that, connect capacitor C1 in parallel and resistor R 4 after the described resistor R 3 as filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101493157A CN101677207B (en) | 2008-09-17 | 2008-09-17 | Universal DC power supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101493157A CN101677207B (en) | 2008-09-17 | 2008-09-17 | Universal DC power supply unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101677207A true CN101677207A (en) | 2010-03-24 |
| CN101677207B CN101677207B (en) | 2012-03-21 |
Family
ID=42029655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101493157A Expired - Fee Related CN101677207B (en) | 2008-09-17 | 2008-09-17 | Universal DC power supply unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101677207B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403892A (en) * | 2010-09-14 | 2012-04-04 | 鸿富锦精密工业（深圳）有限公司 | Power switching circuit and network camera using same |
| CN110212738A (en) * | 2019-05-20 | 2019-09-06 | 上海闻泰电子科技有限公司 | The power supply circuit of imaging modules |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI249283B (en) * | 2004-04-06 | 2006-02-11 | Golden Bridge Electech Inc | Power adaptor with display for DC output voltage level |
| CN2932801Y (en) * | 2006-06-26 | 2007-08-08 | 洪皇江 | mobile phone charger |
| CN201290066Y (en) * | 2008-09-22 | 2009-08-12 | 余昌翰 | Universal DC power supply device |
-
2008
- 2008-09-17 CN CN2008101493157A patent/CN101677207B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403892A (en) * | 2010-09-14 | 2012-04-04 | 鸿富锦精密工业（深圳）有限公司 | Power switching circuit and network camera using same |
| CN110212738A (en) * | 2019-05-20 | 2019-09-06 | 上海闻泰电子科技有限公司 | The power supply circuit of imaging modules |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101677207B (en) | 2012-03-21 |
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Granted publication date: 20120321 Termination date: 20150917 |
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| EXPY | Termination of patent right or utility model |