CN206149251U - Card protection circuit, draw -in groove, terminal - Google Patents
Card protection circuit, draw -in groove, terminal Download PDFInfo
- Publication number
- CN206149251U CN206149251U CN201621223666.4U CN201621223666U CN206149251U CN 206149251 U CN206149251 U CN 206149251U CN 201621223666 U CN201621223666 U CN 201621223666U CN 206149251 U CN206149251 U CN 206149251U
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- Prior art keywords
- card
- triode
- draw
- groove
- resistor
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Abstract
An embodiment of the utility model provides a card protection circuit, draw -in groove, terminal. The embodiment of the utility model provides a card protection circuit, include: discernment end, triode, field effect transistor, power input end, power output end, the discernment end is connected the base of triode, the emitting stage ground connection of triode, the collecting electrode of triode is connected field effect transistor's grid, the power input end is connected field effect transistor's drain electrode, power output holds the connection field effect transistor's source electrode. In the technical scheme provide by the utility model just begin in the card gets into the draw -in groove totally to card power supply, avoided selecting two calories to hold in the palm or extract three in -processs that select two calories of supports inserting three, card short circuit that the position that is used for the identification card piece in the draw -in groove can supply power always and result in, the problem that leads to the fact the card to damage has realized the protection to the card.
Description
Technical field
The utility model is related to field of circuit technology, more particularly to a kind of draw-in groove protection circuit, draw-in groove, terminal.
Background technology
With the continuous development of terminal technology, the pocket numbers in terminal gradually increase, except single user's identification
Draw-in groove, storage (Trans beyond the draw-in groove of (Subscriber Identity Module, SIM) card, also with the second SIM
FLash, TF) card draw-in groove etc..As shown in figure 1, the volume in order to reduce terminal, multiple draw-in grooves are integrated on a Kato,
Form three and select two Katos.
When user selects two Katos using three, SIM or TF cards are put into behind corresponding position, select two Katos to insert by three
In terminal in corresponding draw-in groove, terminal can with reading SIM card or the information of TF cards, using with the work(corresponding to the card being put into
Energy.
However, in prior art, user's insertion three select two Katos or extract three select two Katos during, use in draw-in groove
In one direct power supply of position meeting of identification SIM or TF cards, the card short circuit being put in Kato is easily caused, cause card to damage
It is bad.
Utility model content
The utility model embodiment provides a kind of card protection circuit, draw-in groove, terminal, to protect card, it is to avoid card
Damage.
The utility model embodiment provides a kind of card protection circuit, including：
Identification end；
Triode；
FET；
Power input；
Power output end；
The identification end connects the base stage of the triode, the emitting stage ground connection of the triode, the collection of the triode
Electrode connects the grid of the FET；
The power input connects the drain electrode of the FET, and the power output end connects the FET
Source electrode.
Further, in foregoing circuit, the power input is also connected with power supply；The power output end is also connected with card
Contact.
Further, in foregoing circuit, also include：First resistor；
The first end of the first resistor connects the identification end, and the second end of the first resistor connects the triode
Base stage.
Further, in foregoing circuit, also include：Second resistance；
The first end of the second resistance connects the power input, the second end connection described three of the second resistance
The colelctor electrode of pole pipe.
Further, in foregoing circuit, also include：3rd resistor；
The first end of the 3rd resistor connects the power input, and the second end of the 3rd resistor connects the electricity
Source output terminal.
Further, in foregoing circuit, the 3rd resistor is Zero-ohm resistor.
Further, in foregoing circuit, the FET is metal insulater-semiconductor field-effect metal-oxide-semiconductor.
The utility model embodiment also provides a kind of draw-in groove, including the card protection circuit described in any of the above-described.
The utility model embodiment also provides a kind of mobile terminal, including above-mentioned draw-in groove.
Card protection circuit, draw-in groove, terminal that the utility model embodiment is provided, by recognizing that end detects whether card is complete
Draw-in groove is entered entirely, and when recognizing that end detects card without completely into draw-in groove, identification end to triode sends low level signal,
So that FET is not turned on, and it is open circuit between power input and power output end, power output end cannot power for card,
When identification end detects card completely into draw-in groove, identification end to triode sends high level signal so that FET is turned on,
Power supply import and export end and power output end are turned on, and are powered for card by power output end, therefore, in the utility model embodiment when
Card in draw-in groove completely into just starting to be powered for card, it is to avoid selects two Katos in insertion three or extracts three mistakes for selecting two Katos
For card short circuit caused by one direct power supply of position meeting of identification card in Cheng Zhong, draw-in groove, the problem of card wreck is caused, realized
Protection to card.
Description of the drawings
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative labor
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is Kato of the prior art；
The structural representation of the card protection circuit that Fig. 2 is provided for the utility model embodiment；
Another structural representation of the card protection circuit that Fig. 3 is provided for the utility model embodiment；
The flow chart of the card guard method embodiment that Fig. 4 is provided for the utility model embodiment.
Reference：
1-identification end
2-triode
3-FET
4-power input
5-power output end
6-first resistor
7-second resistance
8-3rd resistor
Specific embodiment
It is new below in conjunction with this practicality to make purpose, technical scheme and the advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment
The embodiment stated is a part of embodiment of the utility model, rather than the embodiment of whole.Based on the enforcement in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Embodiment one
The structural representation of the card protection circuit that Fig. 2 is provided for the utility model embodiment, as shown in Fig. 2 this practicality
The card protection circuit that new embodiment is provided, can include：Identification end 1, triode 2, FET 3, power input 4 with
And power output end 5.
As shown in figure 1, the base stage of the identification connecting triode 2 of end 1, the emitting stage ground connection of triode 2, the current collection of triode 2
Pole connects the grid of FET 3, and power input 4 connects the drain electrode of FET 3, the connection FET 3 of power output end 5
Source electrode.Wherein, recognize that whether end 1 is used for identification card completely into draw-in groove, the connection power supply of power input 4, power supply is card
The power supply in main body that piece protection circuit is located, the contact of the connecting card of power output end 5 so that when card is completely into draw-in groove
When interior, power output end 5 is completely attached to card and powered for card.
Another structural representation of the card protection circuit that Fig. 3 is provided for the utility model embodiment, as shown in figure 3,
During a kind of concrete implementation, first resistor 6, the first end connection identification of first resistor 6 are also included in card protection circuit
End 1, the base stage of the second end connecting triode 2 of first resistor 6.In the utility model embodiment, first resistor act as
Triode 2 provides a suitable voltage.
As shown in figure 3, during a kind of concrete implementation, second resistance 7 is also included in card protection circuit, second is electric
The first end connection power input 4 of resistance 7, the colelctor electrode of the second end connecting triode 2 of second resistance 7.In the utility model
In embodiment, triode 2 can be played a protective role by setting second resistance 7.
As shown in figure 3, during a kind of concrete implementation, 3rd resistor 8 is also included in card protection circuit, the 3rd is electric
The first end connection power input 4 of resistance 8, the second end connection power output end 5 of 3rd resistor 8.The mesh of 3rd resistor 8 is set
Be in draw-in groove circuit trend multiple choices are provided, its implication is, if using 3rd resistor 8, not using card to protect
Protection circuit, if not using 3rd resistor 8, using card protection circuit.In order to easy to use, 3rd resistor 8 can adopt zero
Ohmic resistance, then, is attached on Zero-ohm resistor using other resistance in the form of paster.
It should be noted that in the utility model embodiment, FET is MOS (metal oxide
Semiconductor, metal insulater-semiconductor) FET.
The card protection circuit that the utility model embodiment is provided, by recognizing that end 1 detects card whether completely into card
Groove, when identification end detection 1 to card does not have completely into draw-in groove, identification end 1 to triode 2 sends low level signal so that field
Effect pipe 3 is not turned on, and is open circuit between power input 4 and power output end 5, and power output end 5 cannot power for card, when
Identification end 1 detects card completely into draw-in groove, and identification end 1 to triode 2 sends high level signal so that FET 3 is led
Logical, power supply import and export end 4 turns on power output end 5, is powered for card by power output end 5, therefore, the utility model is implemented
In example when card in draw-in groove completely into just starting to be powered for card, it is to avoid select two Katos or extract three in insertion three and select two cards
During support, for card short circuit caused by one direct power supply of position meeting of identification card in draw-in groove, asking for card wreck is caused
Topic, realizes the protection to card.
Embodiment two
The utility model embodiment also provides a kind of draw-in groove, and draw-in groove includes the card protection circuit in embodiment one.
Embodiment three
The utility model embodiment also provides a kind of mobile terminal, and mobile terminal includes the draw-in groove in embodiment two.
Example IV
The flow chart of the card guard method embodiment that Fig. 4 is provided for the utility model embodiment, as shown in figure 4, this reality
A kind of card guard method is also provided with new embodiment, specifically be may include steps of：
401st, recognize that card is detected completely into draw-in groove in end whether, if detect card not having, completely into draw-in groove, to perform
Step 402, if detecting card completely into draw-in groove, execution step 403.
Specifically, in the utility model embodiment, recognize whether end is complete with identification end by the contact on detection card
Whether confirming card completely into draw-in groove, the even contact on card is completely corresponding with identification end, then recognize that end is examined for full correspondence
Card is measured completely into draw-in groove, if the contact on card does not have completely corresponding with identification end, identification end detects that card does not have
Have completely into draw-in groove.
402nd, recognize that end sends low level signal to triode, triode controls FET according to the low level signal
It is not turned on, with the connection between deenergization input and power output end.
Wherein, the power output end connects the contact of the card；The power input connects power supply.
403rd, recognize that end sends high level signal to triode, triode controls FET and leads according to high level signal
It is logical so as to connect between power input and power output end.
The card guard method that the utility model embodiment is provided, by recognizing that end detects card whether completely into card
Groove, does not have completely into draw-in groove when identification end detects card, and identification end to triode sends low level signal so that field-effect
Pipe is not turned on, and is open circuit between power input and power output end, and power output end cannot power for card, when the inspection of identification end
Card is measured completely into draw-in groove, identification end to triode sends high level signal so that FET is turned on, power supply import and export
End with power output end conducting, powered for card by power output end, therefore, in the technical scheme of the utility model embodiment when
Card in draw-in groove completely into just starting to be powered for card, it is to avoid selects two Katos in insertion three or extracts three mistakes for selecting two Katos
For card short circuit caused by one direct power supply of position meeting of identification card in Cheng Zhong, draw-in groove, the problem of card wreck is caused, realized
Protection to card.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
Cross the related hardware of programmed instruction to complete.Aforesaid program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And aforesaid storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Device embodiment described above is only schematic, wherein can be as the unit of separating component explanation
Or may not be physically separate, can be as the part that unit shows or may not be physical location, i.e.,
A place is may be located at, or can also be distributed at least two NEs.It can according to the actual needs be selected
In some or all of module realizing the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, you can to understand and implement.
Finally it should be noted that：Various embodiments above is only illustrating the technical solution of the utility model, rather than it is limited
System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It still can modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent；And these are changed or are replaced, the essence for not making appropriate technical solution departs from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
1. a kind of card protection circuit, it is characterised in that include：
Identification end；
Triode；
FET；
Power input；
Power output end；
The identification end connects the base stage of the triode, the emitting stage ground connection of the triode, the colelctor electrode of the triode
Connect the grid of the FET；
The power input connects the drain electrode of the FET, and the power output end connects the source of the FET
Pole.
2. circuit according to claim 1, it is characterised in that
The power input is also connected with power supply；
The power output end is also connected with the contact of card.
3. circuit according to claim 1, it is characterised in that also include：First resistor；
The first end of the first resistor connects the identification end, and the second end of the first resistor connects the base of the triode
Pole.
4. circuit according to claim 1, it is characterised in that also include：Second resistance；
The first end of the second resistance connects the power input, and the second end of the second resistance connects the triode
Colelctor electrode.
5. circuit according to claim 1, it is characterised in that also include：3rd resistor；
The first end of the 3rd resistor connects the power input, and the second end connection power supply of the 3rd resistor is defeated
Go out end.
6. circuit according to claim 5, it is characterised in that the 3rd resistor is Zero-ohm resistor.
7. circuit according to any one of claim 1 to 6, it is characterised in that the FET is metal-insulation
Body-semiconductor field metal-oxide-semiconductor.
8. a kind of draw-in groove, it is characterised in that including the card protection circuit any one of claim 1 to 7.
9. a kind of mobile terminal, it is characterised in that including the draw-in groove described in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223666.4U CN206149251U (en) | 2016-11-11 | 2016-11-11 | Card protection circuit, draw -in groove, terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621223666.4U CN206149251U (en) | 2016-11-11 | 2016-11-11 | Card protection circuit, draw -in groove, terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206149251U true CN206149251U (en) | 2017-05-03 |
Family
ID=58626518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621223666.4U Expired - Fee Related CN206149251U (en) | 2016-11-11 | 2016-11-11 | Card protection circuit, draw -in groove, terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206149251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330230A (en) * | 2016-11-11 | 2017-01-11 | 深圳天珑无线科技有限公司 | Card protective circuit, neck, terminal and card protective method |
-
2016
- 2016-11-11 CN CN201621223666.4U patent/CN206149251U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330230A (en) * | 2016-11-11 | 2017-01-11 | 深圳天珑无线科技有限公司 | Card protective circuit, neck, terminal and card protective method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20181111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |