CN103677045B - Voltage regulation circuit - Google Patents
Voltage regulation circuit Download PDFInfo
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- CN103677045B CN103677045B CN201310612472.8A CN201310612472A CN103677045B CN 103677045 B CN103677045 B CN 103677045B CN 201310612472 A CN201310612472 A CN 201310612472A CN 103677045 B CN103677045 B CN 103677045B
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- resistance
- differential amplifier
- input end
- resistor
- triode
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Abstract
The invention discloses a voltage regulation circuit comprising a differential amplifier B1, a differential amplifier B2, an operational amplifier A, a diode D, a triode T, and resistors R1 to R7. The resistor R5, the resistor R6 and the resistor R7 are serially and sequentially connected between a power source and a ground terminal. The input end a of the differential amplifier B1 is connected with the common of the resistor R5 and the common of the resistor R6. The input end a of the differential amplifier B2 is connected with the common of the resistor R6 and the common of the resistor R7. The input end b of the differential amplifier B1 is connected with the input end b of the differential amplifier B2. The output end of the differential amplifier B2, the resistor R4, the resistor R3, the resistor R2, an emitter of the triode T, and a collector of the triode T are serially and sequentially connected to form a closed loop. A base of the triode T is connected with the common of the resistor R3 and the common of the resistor R4. The diode D is connected between positive and negative power sources of the operational amplifier A. according to the principle, a power switch circuit can be made and broken so that electronic tags are controlled and utilized effectively.
Description
Technical field
The present invention relates to electronic tag field, be specifically related to voltage regulator circuit.
Background technology
In recent years, along with wireless communication technology, the development of microelectric technique, non-contact IC card technique is flourish, and in various fields, obtains universal and popularization rapidly, as public transport automatic ticket-selling system, residential identity card, phonecard, bank card etc.Wherein conventional a kind of technology is exactly RFID, i.e. radio-frequency (RF) identification.RFID is often called induction type electronic wafer or closely connects card, contactless card, non-contact card, electronic tag, electronic bar code, etc.Complete set rfid system is made up of Reader and Transponder two part, its operating principle is launch the unlimited radio wave energy of a characteristic frequency to Transponder by Reader, in order to drive Transponder circuit to be sent by the ID Code in Inner portion, now Reader just receives this ID Code.Special being of Transponder is exempted from by battery, contact-free, is exempted to swipe the card therefore be not afraid of dirty, and wafer password is the world uniquely cannot copy, and security is high, the long-life.Widely, current typical apply has animal wafer, automobile wafer Fang Pirates device, gate inhibition's control, parking lot control, production line automation, handling of goods and materials in the application of RFID.Passive power supply technique is one of gordian technique of radio-frequency (RF) identification, mainly obtain voltage by electromagnetic induction principle at present, but this voltage can not regulate, the unlatching and the cut-off that control power switch circuit cannot be realized, effective control and the utilization of radio frequency recognition technology cannot be realized.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art; voltage regulator circuit is provided; utilize two differential amplifiers to compare amplification and obtain the stable voltage output of two-way through feedback and current-limiting protection; realize controlling the unlatching of power switch circuit and cut-off, thus realize with effective control of electronic tag and utilization.
For solving above-mentioned technical matters, the present invention is by the following technical solutions: voltage regulator circuit, comprise differential amplifier B1, differential amplifier B2, operational amplifier A, diode D, triode T, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7, resistance R5 is sequentially connected in series between described power supply and earth terminal, resistance R6 and resistance R7, the input end a contact resistance R5 of differential amplifier B1 and the common port of resistance R6, the input end a contact resistance R6 of differential amplifier B2 and the common port of resistance R7, the input end b of differential amplifier B1 and the input end b of differential amplifier B2 is interconnected, composition closed-loop path is sequentially connected in series between the emitter of the output terminal of described differential amplifier B2, resistance R4, resistance R3, resistance R2, triode T and the collector of triode T, the basis set contact resistance R3 of triode T and the common port of resistance R4, resistance R2 is connected output terminal N1 with the common port of resistance R3, the reverse input end of described operational amplifier A connects the output terminal of differential amplifier B1, diode D is connected between the forward power supply of operational amplifier A and negative sense power supply, the negative sense power end also contact resistance R1 of operational amplifier A, the output terminal of operational amplifier A connects output terminal N2.
When electric current is less than setting value, provided the bias current of T by R4, T saturation conduction, does not play control action to electric current; When electric current is more than or equal to setting value, pressure drop on R2 increases, the pressure drop on R2 and triode tie press and close to the pressure drop of R3, so the electric current that beginning restricted T is passed through, so just current limit in certain level.Also R3 can be changed into a stabilivolt, current limliting is more accurate.So just reach the object of Simultaneous Stabilization electric current.
Further, the input end grounding in the same way of described operational amplifier A.
Further, described diode D is Zener diode.Utilize voltage stabilizing diode D to be limited within the scope of safe voltage by the supply voltage of integrated transporting discharging, make its operating voltage more stable.
Further, described resistance R2, resistance R3 are equal with resistance R4 resistance.
Further, the input end b of described differential amplifier B1 is all connected input end N3 with the input end b of differential amplifier B2.
Compared with prior art; the invention has the beneficial effects as follows: utilize two differential amplifiers to compare amplification and obtain the stable voltage output of two-way through feedback and current-limiting protection; realize controlling the unlatching of power switch circuit and cut-off, thus realize with effective control of electronic tag and utilization.Utilize voltage stabilizing diode D to be limited within the scope of safe voltage by the supply voltage of integrated transporting discharging, make its operating voltage more stable.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated, and embodiments of the invention are not limited thereto.
Embodiment:
As shown in fig. 1, the present invention includes differential amplifier B1, differential amplifier B2, operational amplifier A, diode D, triode T, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7, diode D is Zener diode, and resistance R2, resistance R3 are equal with resistance R4 resistance.Resistance R5, resistance R6 and resistance R7 is sequentially connected in series between the power supply of the present embodiment and earth terminal, the input end a contact resistance R5 of differential amplifier B1 and the common port of resistance R6, the input end a contact resistance R6 of differential amplifier B2 and the common port of resistance R7, the input end b of differential amplifier B1 and the input end b of differential amplifier B2 is interconnected.Composition closed-loop path is sequentially connected in series between the emitter of the output terminal of the differential amplifier B2 of the present embodiment, resistance R4, resistance R3, resistance R2, triode T and the collector of triode T, the basis set contact resistance R3 of triode T and the common port of resistance R4, resistance R2 is connected output terminal N1 with the common port of resistance R3.The reverse input end of the operational amplifier A of the present embodiment connects the output terminal of differential amplifier B1, diode D is connected between the forward power supply of operational amplifier A and negative sense power supply, the negative sense power end also contact resistance R1 of operational amplifier A, the output terminal of operational amplifier A connects output terminal N2, the input end grounding in the same way of operational amplifier A, the input end b of differential amplifier B1 is all connected input end N3 with the input end b of differential amplifier B2.
Utilize two differential amplifiers to compare to amplify and obtain the stable voltage of two-way through feedback and current-limiting protection and export, realize the unlatching and the cut-off that control power switch circuit, thus realization is to effective control of electronic tag and utilization.Utilize voltage stabilizing diode D to be limited within the scope of safe voltage by the supply voltage of integrated transporting discharging, make its operating voltage more stable.Utilize electricity group R2, resistance R3, resistance R4 and triode T by Current Limits surely within the specific limits, electric current is more stable.
Just this invention can be realized as mentioned above.
Claims (5)
1. voltage regulator circuit, it is characterized in that: comprise differential amplifier B1, differential amplifier B2, operational amplifier A, diode D, triode T, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6 and resistance R7, resistance R5 is sequentially connected in series between power supply and earth terminal, resistance R6 and resistance R7, the input end a contact resistance R5 of differential amplifier B1 and the common port of resistance R6, the input end a contact resistance R6 of differential amplifier B2 and the common port of resistance R7, the input end b of differential amplifier B1 and the input end b of differential amplifier B2 is interconnected, composition closed-loop path is sequentially connected in series between the emitter of the output terminal of described differential amplifier B2, resistance R4, resistance R3, resistance R2, triode T and the collector of triode T, the basis set contact resistance R3 of triode T and the common port of resistance R4, resistance R2 is connected output terminal N1 with the common port of resistance R3, the reverse input end of described operational amplifier A connects the output terminal of differential amplifier B1, diode D is connected between the forward power supply of operational amplifier A and negative sense power supply, the negative sense power end also contact resistance R1 of operational amplifier A, the output terminal of operational amplifier A connects output terminal N2.
2. voltage regulator circuit according to claim 1, is characterized in that: the input end grounding in the same way of described operational amplifier A.
3. voltage regulator circuit according to claim 1, is characterized in that: described diode D is Zener diode.
4. voltage regulator circuit according to claim 1, is characterized in that: described resistance R2, resistance R3 are equal with resistance R4 resistance.
5. voltage regulator circuit according to claim 1, is characterized in that: the input end b of described differential amplifier B1 is all connected input end N3 with the input end b of differential amplifier B2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310612472.8A CN103677045B (en) | 2013-11-28 | 2013-11-28 | Voltage regulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310612472.8A CN103677045B (en) | 2013-11-28 | 2013-11-28 | Voltage regulation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103677045A CN103677045A (en) | 2014-03-26 |
| CN103677045B true CN103677045B (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310612472.8A Expired - Fee Related CN103677045B (en) | 2013-11-28 | 2013-11-28 | Voltage regulation circuit |
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| Country | Link |
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| CN (1) | CN103677045B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106709556A (en) * | 2016-12-15 | 2017-05-24 | 天津市飞跃兄弟测控技术有限公司 | Goods retrieval tag |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2645381B1 (en) * | 1989-04-04 | 1991-05-31 | Radiotechnique Compelec | AMPLIFIED LISTENING CONTROL CIRCUIT |
| JP4559643B2 (en) * | 2000-02-29 | 2010-10-13 | セイコーインスツル株式会社 | Voltage regulator, switching regulator, and charge pump circuit |
| JP2006230168A (en) * | 2005-02-21 | 2006-08-31 | Toshiba Corp | Electric power converter |
| JP4869839B2 (en) * | 2006-08-31 | 2012-02-08 | 株式会社リコー | Voltage regulator |
| CN200993746Y (en) * | 2006-12-22 | 2007-12-19 | 崇贸科技股份有限公司 | Low dropout voltage stabilizer |
| JP2009134698A (en) * | 2007-11-09 | 2009-06-18 | Seiko Instruments Inc | Voltage regulator |
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2013
- 2013-11-28 CN CN201310612472.8A patent/CN103677045B/en not_active Expired - Fee Related
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| CN103677045A (en) | 2014-03-26 |
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Address after: The middle high tech Zone Yizhou road in Chengdu city of Sichuan province 610000 1800 Building No. 1 No. 603 Patentee after: Chengdu Power Technology Co.,Ltd. Address before: The middle high tech Zone Yizhou road in Chengdu city of Sichuan province 610000 1800 Building No. 1 No. 603 Patentee before: WESYSTEMS TECHNOLOGIES CO.,LTD. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20151105 Address after: 610000 Sichuan city of Chengdu province Tianfu Tianfu Avenue South Huayang Street No. 846 Patentee after: Sichuan Aerospace Power Technology Co.,Ltd. Address before: The middle high tech Zone Yizhou road in Chengdu city of Sichuan province 610000 1800 Building No. 1 No. 603 Patentee before: Chengdu Power Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20181128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |