CN2753097Y - Control circuit for charging socket back light turning-on and turning-off - Google Patents
Control circuit for charging socket back light turning-on and turning-off Download PDFInfo
- Publication number
- CN2753097Y CN2753097Y CNU2004201102339U CN200420110233U CN2753097Y CN 2753097 Y CN2753097 Y CN 2753097Y CN U2004201102339 U CNU2004201102339 U CN U2004201102339U CN 200420110233 U CN200420110233 U CN 200420110233U CN 2753097 Y CN2753097 Y CN 2753097Y
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- CN
- China
- Prior art keywords
- charging socket
- connector
- splicing ear
- turning
- light
- 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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- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The utility model circuit for controlling the back light of a charging socket to turn on and turn off. A middle connecting terminal of a connector of a hand-held device is in a short circuit with a connecting terminal of a ground wire; a resistor and an LED are connected in series between a power supply terminal of a connector of the charging socket and the middle connecting terminal, and the cathode of the LED is connected with the middle connecting terminal. Whether the hand-held device and the charging socket form effective connection can be conveniently detected by the utility model.
Description
Technical field
The utility model relates to a kind of control circuit that is used for charging socket light on and off backlight.
Background technology
Traditional charging socket with backlight function, as long as one plugs in, LED will be lighted immediately, and when handheld device is inserted, do not have any reaction, therefore it can only represent whether charging socket is in chargeable state, but after can not detecting the handheld device insertion, whether sets up effective the connection with jack interface.
In addition, on some traditional sockets of lithium ion cell charging cheaply, often have only LED backlight, and the rechargeable battery Warning Mark that do not charge itself, if battery and charging socket loose contact, the user can't know.
The utility model content
The technical problems to be solved in the utility model provides a kind of control circuit that is used for charging socket light on and off backlight, and it can detect handheld device easily and whether set up effective the connection with charging socket.
For solving the problems of the technologies described above, the utility model is used for the control circuit of charging socket light on and off backlight, comprise the connector of handheld device and the connector of charging socket, and both can peg graft mutually, wherein, the middle splicing ear of handheld device connector and ground wire splicing ear short circuit, between the power supply terminal of charging socket connector and middle splicing ear, connect a resistance and a light-emitting diode, and the negative electrode of light-emitting diode is connected with middle splicing ear.
Use the utility model, the backlight of charging socket do not work at ordinary times, when handheld devices such as handheld device or battery are inserted charging socket, and connects when effective backlight will lighting; And handheld device is extracted charging socket, backlight will extinguishing.On the basis that does not increase any components and parts, control light on and off backlight by the plug of handheld device, thereby make the user know the situation of charging in the very first time, can keep original backlight function, user-friendly, can point out the conducting of user's charging inlet normal again, positive what is called is killed two birds with one stone.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the utility model is described in further detail.
Accompanying drawing is circuit theory diagrams of the present utility model.
Embodiment
As shown in the figure, the utility model is used for the control circuit of charging socket light on and off backlight, comprises the connector of handheld device and the connector of charging socket.Middle splicing ear 2 and ground wire splicing ear 3 short circuits of handheld device connector X1.Between the power supply terminal 4 of charging socket connector X2 and middle splicing ear 5, connect a resistance R and a light-emitting diode D, and the negative electrode of light-emitting diode D is connected with middle splicing ear 5.When handheld device connector X1 inserts charging socket connector X2, the power supply terminal 1 of handheld device connector X1, middle splicing ear 2, ground wire splicing ear 3, power supply terminal 4, middle splicing ear 5, the ground wire splicing ear 6 with charging socket connector X2 plugs respectively.When both contact when good, because, the middle splicing ear 2 of handheld device connector X1 and ground wire splicing ear 3 short circuits, therefore, the light-emitting diode D that is connected in series by resistance R between the power supply terminal 4 of charging socket connector X2 and the middle splicing ear 5 will be light.
Whether the present invention detects handheld device with the simplest method and effectively contacts with charging socket, if connect normally, then lights backlight on the charging socket.On the contrary, when handheld device when charging socket pulls away, backlight will extinguishing.
Claims (1)
1, a kind of control circuit that is used for charging socket light on and off backlight, comprise the connector of handheld device and the connector of charging socket, and both can peg graft mutually, it is characterized in that, the middle splicing ear of handheld device connector and ground wire splicing ear short circuit, between the power supply terminal of charging socket connector and middle splicing ear, connect a resistance and a light-emitting diode, and the negative electrode of light-emitting diode is connected with middle splicing ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201102339U CN2753097Y (en) | 2004-11-24 | 2004-11-24 | Control circuit for charging socket back light turning-on and turning-off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201102339U CN2753097Y (en) | 2004-11-24 | 2004-11-24 | Control circuit for charging socket back light turning-on and turning-off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2753097Y true CN2753097Y (en) | 2006-01-18 |
Family
ID=35914506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004201102339U Expired - Fee Related CN2753097Y (en) | 2004-11-24 | 2004-11-24 | Control circuit for charging socket back light turning-on and turning-off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2753097Y (en) |
-
2004
- 2004-11-24 CN CNU2004201102339U patent/CN2753097Y/en not_active Expired - Fee Related
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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: 20060118 Termination date: 20101124 |