CN202750311U - Emergency drive circuit of mobile phone flashlight - Google Patents
Emergency drive circuit of mobile phone flashlight Download PDFInfo
- Publication number
- CN202750311U CN202750311U CN 201220499657 CN201220499657U CN202750311U CN 202750311 U CN202750311 U CN 202750311U CN 201220499657 CN201220499657 CN 201220499657 CN 201220499657 U CN201220499657 U CN 201220499657U CN 202750311 U CN202750311 U CN 202750311U
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- CN
- China
- Prior art keywords
- mobile phone
- flashlight
- pressurizer
- control switch
- wire
- 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 - Lifetime
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Abstract
The utility model discloses an emergency drive circuit of a mobile phone flashlight, which comprises a flashlight drive chip and a voltage stabilizer, wherein the power output end of the voltage stabilizer is electrically connected with the flashlight drive chip via a wire; the power input end of the voltage stabilizer is electrically connected with the battery of the mobile phone via the wire; a control switch is arranged on the wire between the voltage stabilizer and the battery of the mobile phone; and the enable end of the voltage stabilizer is electrically connected with the voltage of the mobile phone system. The emergency drive circuit of the mobile phone flashlight enables the flashlight of the mobile phone to be provided with the flashlight function, enables the flashlight to be opened when the mobile phone is power-off and facilitates emergency use for people.
Description
Technical field
The utility model relates to a kind of drive circuit, specifically a kind of emergency driving circuit that mobile phone flashlight is used as flashlight.
Background technology
Along with the development of mobile phone technique, mobile phone is very universal, and mobile phone has also become the indispensable part of human lives.For fear of too much burden, people often carry seldom instrument, and mobile phone has substituted the function of some instrument effectively as one of carry-on indispensable article of people.
The photoflash lamp of mobile phone is the part of cell-phone camera module, and in order to enrich function, some manufacturer becomes to have the function of flashlight with flash design, can play the effect of flashlight in the time of at ordinary times, need not specially carry flashlight.The mobile phone of present this kind version, the flashlight function of mobile phone generally all are in the situation that start realizes by software control.Mobile phone can't be started shooting when cell-phone battery electric-charge quantity is lower than to a certain degree, and also can't use flashlight function this moment.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of emergency driving circuit that can under the mobile phone shutdown state mobile phone flashlight be used as flashlight.
In order to solve the problems of the technologies described above, the utility model is taked following technical scheme:
A kind of emergency driving circuit of mobile phone flashlight, comprise that photoflash lamp drives chip and pressurizer, this pressurizer power output end drives chip by wire and photoflash lamp and is electrically connected, the power input of pressurizer is electrically connected with battery of mobile phone by wire, wire between pressurizer and battery of mobile phone is provided with control switch, and the Enable Pin of pressurizer is electrically connected with cell phone system voltage.
Described control switch is for independently being contained in the control switch on the mobile phone.
Described control switch is the volume button of mobile phone.
Described pressurizer is low pressure difference linear voltage regulator LDO.
The utility model is applied on the mobile phone, photoflash lamp is used as flashlight uses, and makes mobile phone still can use flashlight function under off-mode, effectively utilizes cell-phone battery electric-charge quantity, has enriched function, and can play emergent effect.
Description of drawings
Accompanying drawing 1 is the utility model circuit theory diagrams.
Embodiment
For the ease of those skilled in the art's understanding, the utility model will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model has disclosed a kind of emergency driving circuit of mobile phone flashlight, comprise that photoflash lamp drives chip and pressurizer, this pressurizer power output end drives chip by wire and photoflash lamp and is electrically connected, the power input of pressurizer is electrically connected with battery of mobile phone by wire, wire between pressurizer and battery of mobile phone is provided with control switch 1, and the Enable Pin of pressurizer is electrically connected with cell phone system voltage.Control switch can be additionally to be contained in separately the control switch on the mobile phone, the pass that is specifically designed to the control flashlight with close.Control switch also can directly be the volume button on the mobile phone.Pressurizer is preferably low pressure difference linear voltage regulator LDO.
The utility model becomes to have the function of flashlight with the flash design of mobile phone.The Enable Pin of pressurizer is that Low level effective, high level are invalid.When mobile phone power-on, cell phone system voltage is high level in the Enable Pin of pressurizer, and this moment, the Enable Pin of pressurizer was invalid, and the flashlight function of photoflash lamp is closed.If need to open, just the software by mobile phone self operates.When mobile phone shutdown, cell phone system voltage is low level, and this moment, the Enable Pin of pressurizer was effective, can open the flashlight function of photoflash lamp by operation-control switch.Battery of mobile phone was powered to pressurizer when control switch closed, and battery of mobile phone disconnected power supply when control switch was opened.
When the battery electric quantity of mobile phone is not enough to supply the normal operation of mobile phone continuation, mobile phone will shut down.And battery of mobile phone in fact also remained electric weight was arranged this moment, and the control switch that closes can start flashlight function, in case of need.
Claims (4)
1. the emergency driving circuit of a mobile phone flashlight, comprise that photoflash lamp drives chip, it is characterized in that: also comprise pressurizer, this pressurizer power output end drives chip by wire and photoflash lamp and is electrically connected, the power input of pressurizer is electrically connected with battery of mobile phone by wire, wire between pressurizer and battery of mobile phone is provided with control switch (1), and the Enable Pin of pressurizer is electrically connected with cell phone system voltage.
2. the emergency driving circuit of mobile phone flashlight according to claim 1 is characterized in that: described control switch is for independently being contained in the control switch on the mobile phone.
3. the emergency driving circuit of mobile phone flashlight according to claim 1, it is characterized in that: described control switch is the volume button of mobile phone.
4. according to claim 1 and 2 or the emergency driving circuit of 3 described mobile phone flashlights, it is characterized in that: the pressurizer that is connected with described control switch is low pressure difference linear voltage regulator LDO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220499657 CN202750311U (en) | 2012-09-26 | 2012-09-26 | Emergency drive circuit of mobile phone flashlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220499657 CN202750311U (en) | 2012-09-26 | 2012-09-26 | Emergency drive circuit of mobile phone flashlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202750311U true CN202750311U (en) | 2013-02-20 |
Family
ID=47709655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220499657 Expired - Lifetime CN202750311U (en) | 2012-09-26 | 2012-09-26 | Emergency drive circuit of mobile phone flashlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202750311U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793392A (en) * | 2016-12-13 | 2017-05-31 | 广东欧珀移动通信有限公司 | The control circuit of breath light, control method and terminal |
| CN111964687A (en) * | 2020-08-19 | 2020-11-20 | 昆明学院 | Device capable of recording step under low electric quantity state |
-
2012
- 2012-09-26 CN CN 201220499657 patent/CN202750311U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793392A (en) * | 2016-12-13 | 2017-05-31 | 广东欧珀移动通信有限公司 | The control circuit of breath light, control method and terminal |
| CN111964687A (en) * | 2020-08-19 | 2020-11-20 | 昆明学院 | Device capable of recording step under low electric quantity state |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |