CN204242217U - A kind of non-contact IC card circuit for card system - Google Patents
A kind of non-contact IC card circuit for card system Download PDFInfo
- Publication number
- CN204242217U CN204242217U CN201420667603.2U CN201420667603U CN204242217U CN 204242217 U CN204242217 U CN 204242217U CN 201420667603 U CN201420667603 U CN 201420667603U CN 204242217 U CN204242217 U CN 204242217U
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- resistance
- triode
- card
- circuit
- pulse signal
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Abstract
The utility model discloses a kind of non-contact IC card circuit for card system, comprise telefault, tunable capacitor, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, triode, diode, electric capacity and time-base integrated circuit, tunable capacitor and capacitance group become endergonic shunt-resonant circuit, triode is as noncontacting switch, only need input a faint pulse signal from the base stage of triode, pulse signal sends pulse through shunt-resonant circuit, and pulse signal time-base integrated circuit produces.In the utility model, tunable capacitor and capacitance group become endergonic shunt-resonant circuit, triode is as noncontacting switch, only need input a faint pulse signal from the base stage of triode, pulse signal sends pulse through shunt-resonant circuit, pulse signal is modulated into pulse width modulated square wave through time-base integrated circuit, and this non-contact IC card circuit has working stability, structure is simple and cost is low feature.
Description
Technical field
The utility model relates to a kind of IC-card circuit, particularly relates to a kind of non-contact IC card circuit for card system.
Background technology
All-purpose card is the intelligent management realizing multiple difference in functionality on the same card, its core content utilizes this specific physical media of card, realize the generation from business datum, gather and be transferred to standardization and the robotization of the management of information resources of Macro or mass analysis, medium according to all-purpose card divides, be divided into read-only and read-write type, read-only all-purpose card is generally use No. ID on card to realize authentication, and carry out data interaction on backstage, as magnetic stripe card, bar code card, be loaded with PVC card and the non-contact IC card of No. ID, there is job insecurity in the non-contact IC card circuit of tradition card system, complex structure and the high problem of cost.
Utility model content
The purpose of this utility model is just to provide a kind of non-contact IC card circuit for card system to solve the problem.
In order to achieve the above object, the utility model have employed following technical scheme:
A kind of non-contact IC card circuit for card system, comprise telefault, tunable capacitor, first resistance, second resistance, 3rd resistance, 4th resistance, triode, diode, electric capacity and time-base integrated circuit, the first end of described telefault respectively with the first end of described tunable capacitor, the first end of described first resistance is connected with the collector of described triode, second end of described telefault is connected with the second end of described tunable capacitor and the first end of described second resistance respectively, second end of described second resistance is connected with the described first end of the 3rd resistance and the emitter of described triode respectively, the base stage of described triode is connected with the first end of described 4th resistance, second end of described 4th resistance is connected with the output terminal of described time-base integrated circuit, second end of described 3rd resistance is connected with the first end of described electric capacity and the negative electricity source of described time-base integrated circuit respectively, the cathode power supply end of described time-base integrated circuit is connected with the second end of described electric capacity and the negative pole of described diode respectively, the positive pole of described diode is connected with the second end of described first resistance.
In said structure, tunable capacitor and electric capacity form endergonic shunt-resonant circuit, and for generation of pulse signal, triode is as noncontacting switch, and pulse signal is modulated into pulse width modulated square wave through time-base integrated circuit.
The beneficial effects of the utility model are:
The utility model is a kind of non-contact IC card circuit for card system, in this non-contact IC card circuit, tunable capacitor and capacitance group become endergonic shunt-resonant circuit, triode is as noncontacting switch, only need input a faint pulse signal from the base stage of triode, pulse signal sends pulse through shunt-resonant circuit, pulse signal is modulated into pulse width modulated square wave through time-base integrated circuit, and this non-contact IC card circuit has working stability, structure is simple and cost is low feature.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of non-contact IC card circuit for card system of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of non-contact IC card circuit for card system of the utility model, comprise telefault L, tunable capacitor CP, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, triode VT, diode D, electric capacity C and time-base integrated circuit IC, the first end of telefault L respectively with the first end of tunable capacitor CP, the first end of the first resistance R1 is connected with the collector of triode VT, second end of telefault L is connected with second end of tunable capacitor CP and the first end of the second resistance R2 respectively, second end of the second resistance R2 is connected with the first end of the 3rd resistance R3 and the emitter of triode VT respectively, the base stage of triode VT is connected with the first end of the 4th resistance R4, second end of the 4th resistance R4 is connected with the output terminal of time-base integrated circuit IC, second end of the 3rd resistance R3 is connected with the first end of electric capacity C and the negative electricity source of time-base integrated circuit IC respectively, the cathode power supply end of time-base integrated circuit IC is connected with second end of electric capacity C and the negative pole of diode D respectively, the positive pole of diode D is connected with second end of the first resistance R1.
Principle of work of the present utility model is as follows:
Tunable capacitor CP and electric capacity C consists of endergonic shunt-resonant circuit, triode VT is as noncontacting switch, only need input a faint pulse signal from the base stage of triode VT, pulse signal sends pulse through shunt-resonant circuit, and pulse signal is modulated into pulse width modulated square wave through time-base integrated circuit IC.
Claims (1)
1. the non-contact IC card circuit for card system, it is characterized in that: comprise telefault, tunable capacitor, first resistance, second resistance, 3rd resistance, 4th resistance, triode, diode, electric capacity and time-base integrated circuit, the first end of described telefault respectively with the first end of described tunable capacitor, the first end of described first resistance is connected with the collector of described triode, second end of described telefault is connected with the second end of described tunable capacitor and the first end of described second resistance respectively, second end of described second resistance is connected with the described first end of the 3rd resistance and the emitter of described triode respectively, the base stage of described triode is connected with the first end of described 4th resistance, second end of described 4th resistance is connected with the output terminal of described time-base integrated circuit, second end of described 3rd resistance is connected with the first end of described electric capacity and the negative electricity source of described time-base integrated circuit respectively, the cathode power supply end of described time-base integrated circuit is connected with the second end of described electric capacity and the negative pole of described diode respectively, the positive pole of described diode is connected with the second end of described first resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667603.2U CN204242217U (en) | 2014-11-10 | 2014-11-10 | A kind of non-contact IC card circuit for card system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667603.2U CN204242217U (en) | 2014-11-10 | 2014-11-10 | A kind of non-contact IC card circuit for card system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242217U true CN204242217U (en) | 2015-04-01 |
Family
ID=52771683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420667603.2U Expired - Fee Related CN204242217U (en) | 2014-11-10 | 2014-11-10 | A kind of non-contact IC card circuit for card system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242217U (en) |
-
2014
- 2014-11-10 CN CN201420667603.2U patent/CN204242217U/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 | ||
| ASS | Succession or assignment of patent right |
Owner name: CHENGDU WINZDAR INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHENGDU RUITU ELECTRONIC CO., LTD. Effective date: 20150612 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Lin Inventor before: Liu Lifeng Inventor before: Rui Liguo |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU LIFENG RUI LIGUO TO: LIU LIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150612 Address after: 610041 No. 44 Xiaojiahe middle street, hi tech Zone, Sichuan, Chengdu Patentee after: CHENGDU YINSHIDA INFORMATION TECHNOLOGY CO., LTD. Address before: 610041 Chengdu province high tech Zone in the middle of the street and Po Road, No. 220 Patentee before: Chengdu Rui Tu Electronics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151110 |