CN205726561U - A kind of antenna coupling electric power-feeding structure of parallel connection light emitting diode - Google Patents
A kind of antenna coupling electric power-feeding structure of parallel connection light emitting diode Download PDFInfo
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- CN205726561U CN205726561U CN201620420926.0U CN201620420926U CN205726561U CN 205726561 U CN205726561 U CN 205726561U CN 201620420926 U CN201620420926 U CN 201620420926U CN 205726561 U CN205726561 U CN 205726561U
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Abstract
The utility model discloses the antenna coupling electric power-feeding structure of a kind of parallel connection light emitting diode.It includes coupling circuit, NFC chip, voltage doubling rectifing circuit and VOLTAG CHOPPER VEGULATOR circuit, described coupling circuit is in parallel with NFC chip, described NFC chip is provided with radio frequency resonant circuit, voltage doubling rectifing circuit and VOLTAG CHOPPER VEGULATOR circuit it is sequentially connected with after described coupling circuit is in parallel with NFC chip, two light emitting diodes, two described light emitting diode parallel connections it are provided with in described VOLTAG CHOPPER VEGULATOR circuit.The beneficial effects of the utility model are: light light emitting diode and power without external battery；Circuit structure is simple and low cost.
Description
Technical field
This utility model relates to antenna coupling correlative technology field, refers in particular to the antenna of a kind of parallel connection light emitting diode
Coupling electric power-feeding structure.
Background technology
Proximity IC-card (NFC product) is to be widely used in transportation card, access control card, electronic consumer card, bank card
In field.But when to IC-card (NFC product) read-write operation, power at non-transformer at these IC-cards (NFC product)
The display function of operative power when the most effective lower this IC-card of display (NFC product) is read and write.
At present, some high-end IC-cards (NFC product) application has power supply to power, and controls and IC-card (NFC product) with MCU
It is luminous that communication result controls LED.The defect of this method of work is: 1) power with battery, it is well known that the electricity of battery is intended to
Exhaust.2) the LED luminous display circuit complexity that controls used, cost height, IC-card (NFC product) does the least.
Utility model content
This utility model is to there is above-mentioned deficiency in prior art to overcome, it is provided that a kind of circuit structure simple and
Antenna coupling electric power-feeding structure without the parallel connection light emitting diode that external battery is powered.
To achieve these goals, this utility model is by the following technical solutions:
The antenna coupling electric power-feeding structure of a kind of parallel connection light emitting diode, including coupling circuit, NFC chip, voltage multiplying rectifier
Circuit and VOLTAG CHOPPER VEGULATOR circuit, described coupling circuit is in parallel with NFC chip, is provided with radio frequency resonant electricity in described NFC chip
Road, is sequentially connected with voltage doubling rectifing circuit and VOLTAG CHOPPER VEGULATOR circuit after described coupling circuit is in parallel with NFC chip, described current stabilization is adjusted
Two light emitting diodes, two described light emitting diode parallel connections it are provided with in volt circuit.
When the read-write heads of NFC chip produces coupling ionized field under the coupling frequency coupling circuit, NFC chip enters into
This coupling ionized field is written and read, and now NFC chip is originally born with and is in a coupling ionized field with energy, NFC chip
Read-write energy be to obtain from this coupling ionized field, and with read-write heads communication, this utility model uses from the coupling of NFC chip electricity
Road part fetching portion energy, is amplified by voltage doubling rectifing circuit and makes lumination of light emitting diode, and so design makes this practicality
The novel external battery that need not when lighting light emitting diode is powered, and circuit structure the most of the present utility model is simple, cost
Low.
As preferably, described coupling circuit includes antenna, the first electric capacity and the second electric capacity, described antenna, the first electricity
Holding and the second electric capacity is the most in parallel, described antenna is made up of 5 turn coil.Radio circuit in logical overcoupled circuits and NFC chip
Form resonant frequency and obtain electric flux.
As preferably, described voltage doubling rectifing circuit includes the 3rd electric capacity and Half bridge rectifier circuit, the 3rd described electric capacity
With after Half bridge rectifier circuit connected in series with couple circuit in parallel.By the electric flux of acquisition from coupling circuit with NFC chip through multiplication of voltage
The work promoting light emitting diode later is amplified in the rectification of rectification circuit.
As preferably, described Half bridge rectifier circuit includes the first stabilivolt and the second stabilivolt, described first stabilivolt
Negative pole and the second stabilivolt positive pole connect, described one end of 3rd electric capacity is connected with the positive pole of the second stabilivolt, described
Voltage doubling rectifing circuit is connected with coupling circuit by the other end of the 3rd electric capacity and the negative pole of the second stabilivolt, described times repoussage
Current circuit is connected with VOLTAG CHOPPER VEGULATOR circuit by the positive pole of the first stabilivolt and the negative pole of the second stabilivolt.
As preferably, described VOLTAG CHOPPER VEGULATOR circuit also includes that resistance, two described light emitting diodes are respectively first
Light emitting diode and the second light emitting diode, the first described light emitting diode and the second light emitting diode are in parallel, described resistance
One end be connected with the positive pole of the first stabilivolt, the other end of described resistance respectively with the negative pole and second of the first light emitting diode
The negative pole of light emitting diode connects, and the positive pole of described first light emitting diode and the positive pole of the second light emitting diode are all steady with second
The negative pole of pressure pipe connects.Will produce light source after light emitting diode obtains DC current, wherein resistance plays pressure regulation current stabilization
Effect.
The beneficial effects of the utility model are: light light emitting diode and power without external battery；Circuit structure simple and
Low cost.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
In figure: ATN. antenna, IC.NFC chip, C1. the first electric capacity, C2. the second electric capacity, C3. the 3rd electric capacity, D. half-bridge is whole
Current circuit, D1. the first stabilivolt, D2. the second stabilivolt, R. resistance, LED1. the first light emitting diode, LED2. the second luminescence two
Pole is managed.
Detailed description of the invention
With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings.
In embodiment as described in Figure 1, the antenna coupling electric power-feeding structure of a kind of parallel connection light emitting diode, including coupling electricity
Road, NFC chip IC, voltage doubling rectifing circuit and VOLTAG CHOPPER VEGULATOR circuit, coupling circuit is in parallel with NFC chip IC, sets in NFC chip IC
There is radio frequency resonant circuit, after coupling circuit is in parallel with NFC chip IC, be sequentially connected with voltage doubling rectifing circuit and VOLTAG CHOPPER VEGULATOR circuit, surely
It is provided with two light emitting diodes, two light emitting diode parallel connections in stream regulating circuit.
Coupling circuit includes antenna ATN, the first electric capacity C1 and the second electric capacity C2, antenna ATN, the first electric capacity C1 and the second electricity
Holding C2 the most in parallel, antenna ATN is made up of 5 turn coil.Voltage doubling rectifing circuit includes the 3rd electric capacity C3 and Half bridge rectifier circuit D, the
Three electric capacity C3 and Half bridge rectifier circuit D series connection after with couple circuit in parallel.Half bridge rectifier circuit D includes the first stabilivolt D1 and
The negative pole of two stabilivolt D2, the first stabilivolt D1 and the positive pole of the second stabilivolt D2 connect, one end and second of the 3rd electric capacity C3
The positive pole of stabilivolt D2 connects, and voltage doubling rectifing circuit is by the other end of the 3rd electric capacity C3 and the negative pole of the second stabilivolt D2 and coupling
Conjunction circuit connects, and voltage doubling rectifing circuit is by the positive pole of the first stabilivolt D1 and the negative pole of the second stabilivolt D2 and VOLTAG CHOPPER VEGULATOR electricity
Road connects.
VOLTAG CHOPPER VEGULATOR circuit also includes that resistance R, two light emitting diodes are respectively the first LED 1 and second
LED 2, the first LED 1 is in parallel with the second LED 2, and one end of resistance R is steady with first
The positive pole of pressure pipe D1 connects, the other end of resistance R respectively with negative pole and second light emitting diode of the first LED 1
The negative pole of LED2 connects, the positive pole of the first LED 1 and the positive pole of the second LED 2 all with the second voltage stabilizing
The negative pole of pipe D2 connects.
When the read-write heads of NFC chip IC sends the resonance wave ionized field of 13.56 million frequencies, logical overcoupled circuits and NFC core
Radio circuit in sheet IC forms resonant frequency and obtains electric flux, and NFC chip IC enters into this coupling ionized field and is written and read,
NFC chip IC is inherently in a coupling ionized field with energy, i.e. the read-write energy of NFC chip IC is to couple from this
Ionized field obtains, and carries out communication with read-write heads, and electric flux promoted light-emitting diodes later through the rectification amplification of multiplication of voltage finishing circuit
The work of pipe, two light emitting diodes in parallel guarantee light emitting diode minimum energy dissipation with resistance R composition VOLTAG CHOPPER VEGULATOR circuit
Normally starting luminescence, this utility model uses the coupled antenna part fetching portion energy from NFC chip IC, by training repoussage stream
Amplify the luminescence making light emitting diode.
This utility model can be used in all NFC chip IC, shows with the luminescence of two light emitting diodes in parallel
The product of this NFC chip IC comes into the field regime of card reader can be written and read operation, thus meets some NFC core
The design of the product of sheet IC needs two light emitting diodes, and meanwhile, the loop that parallel connection is constituted provides and a light-emitting diodes
Manage identical voltage and make two lumination of light emitting diode；The spy of part NFC chip can be met by such connection application
Different needs.
Claims (5)
1. parallel connection light emitting diode antenna coupling an electric power-feeding structure, it is characterized in that, including coupling circuit, NFC chip, times
Voltage rectifier and VOLTAG CHOPPER VEGULATOR circuit, described coupling circuit is in parallel with NFC chip, is provided with radio frequency in described NFC chip
Circuit, is sequentially connected with voltage doubling rectifing circuit and VOLTAG CHOPPER VEGULATOR circuit, described current stabilization after described coupling circuit is in parallel with NFC chip
Two light emitting diodes, two described light emitting diode parallel connections it are provided with in regulating circuit.
The antenna coupling electric power-feeding structure of a kind of parallel connection light emitting diode the most according to claim 1, is characterized in that, described
Coupling circuit include antenna, the first electric capacity and the second electric capacity, described antenna, the first electric capacity and the second electric capacity are the most in parallel, institute
The antenna stated is made up of 5 turn coil.
The antenna coupling electric power-feeding structure of a kind of parallel connection light emitting diode the most according to claim 1, is characterized in that, described
Voltage doubling rectifing circuit include the 3rd electric capacity and Half bridge rectifier circuit, after the 3rd described electric capacity and Half bridge rectifier circuit connected in series with
Coupling circuit in parallel.
The antenna coupling electric power-feeding structure of a kind of parallel connection light emitting diode the most according to claim 3, is characterized in that, described
Half bridge rectifier circuit include the first stabilivolt and the second stabilivolt, the negative pole of described first stabilivolt and the second stabilivolt are just
Pole connects, and described one end of 3rd electric capacity is connected with the positive pole of the second stabilivolt, and described voltage doubling rectifing circuit is by the 3rd electricity
The other end and the negative pole of the second stabilivolt that hold are connected with coupling circuit, and described voltage doubling rectifing circuit is by the first stabilivolt
The negative pole of positive pole and the second stabilivolt is connected with VOLTAG CHOPPER VEGULATOR circuit.
The antenna coupling electric power-feeding structure of a kind of parallel connection light emitting diode the most according to claim 4, is characterized in that, described
VOLTAG CHOPPER VEGULATOR circuit also include that resistance, two described light emitting diodes are respectively the first light emitting diode and the second luminescence two
Pole is managed, and the first described light emitting diode and the second light emitting diode are in parallel, and one end of described resistance is with the first stabilivolt just
Pole connects, and the other end of described resistance is connected with the negative pole of the first light emitting diode and the negative pole of the second light emitting diode respectively,
The positive pole of described first light emitting diode and the positive pole of the second light emitting diode all negative poles with the second stabilivolt are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620420926.0U CN205726561U (en) | 2016-05-11 | 2016-05-11 | A kind of antenna coupling electric power-feeding structure of parallel connection light emitting diode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620420926.0U CN205726561U (en) | 2016-05-11 | 2016-05-11 | A kind of antenna coupling electric power-feeding structure of parallel connection light emitting diode |
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| CN205726561U true CN205726561U (en) | 2016-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173572A (en) * | 2016-12-07 | 2018-06-15 | 佳能株式会社 | Electronic equipment and operating method |
-
2016
- 2016-05-11 CN CN201620420926.0U patent/CN205726561U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173572A (en) * | 2016-12-07 | 2018-06-15 | 佳能株式会社 | Electronic equipment and operating method |
| CN108173572B (en) * | 2016-12-07 | 2021-09-28 | 佳能株式会社 | Electronic device and operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170519 Address after: 200331, Shanghai District, Putuo District, Liu Yuen Road No. 538 on the first floor, C District, two floor, third floor Co-patentee after: Shanghai Jushuo Technology Co., Ltd. Patentee after: Shanghai instant smart card system Co., Ltd. Address before: 200331, Shanghai District, Putuo District, Liu Yuen Road No. 538 on the first floor, C District, two floor, third floor Patentee before: Shanghai instant smart card system Co., Ltd. |