CN2785302Y - Self-adaptive LED illuminating system constant-current source equipment - Google Patents
Self-adaptive LED illuminating system constant-current source equipment Download PDFInfo
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- CN2785302Y CN2785302Y CN 200520008741 CN200520008741U CN2785302Y CN 2785302 Y CN2785302 Y CN 2785302Y CN 200520008741 CN200520008741 CN 200520008741 CN 200520008741 U CN200520008741 U CN 200520008741U CN 2785302 Y CN2785302 Y CN 2785302Y
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- circuit
- voltage fluctuation
- current source
- control switch
- source device
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Abstract
The utility model relates to a self-adaptive LED illuminating system constant-current source device which has the advantages of simple structure, low cost and high electric energy utilization efficiency. The utility model has the technical scheme that the self-adaptive LED illuminating system constant-current source device is characterized in that the self-adaptive LED illuminating system constant-current source device comprises a voltage fluctuation detection circuit, an A/D changeover circuit and a control switch circuit, wherein the voltage fluctuation detection circuit is used for detecting voltage fluctuation values in a circuit, the voltage fluctuation values are transported to the control switch circuit through A/D conversion, the control switch circuit drives a corresponding LED switch into a short circuit state according to A/D conversion values, and other LED lamps can obtain starting voltage. The control switch circuit respectively controls 2< N > LED lamps, and N is an integer which is not smaller than zero.
Description
Technical field
The utility model belongs to LED illumination constant-current source device field, especially a kind of adaptive LED illuminator constant-current source device.
Background technology
The LED illuminator is different from common illuminator, the starting resistor that the luminous needs of LED lamp are certain, because voltage fluctuation often takes place in power supply circuits, if voltage is lower than the driving voltage of LED lamp, to make LED illuminator cisco unity malfunction, and for general illumination system, it is smaller influenced by voltage fluctuation, and voltage fluctuation may be some variation of luminosity of electric light.Therefore, normally use in order to guarantee the LED illuminator, needing to give the LED illuminator to increase stable-pressure device is constant-current source device.At present, at the normally used constant-current source device of LED illuminator, be to adopt the frequency conversion filter to realize voltage-regulation, the problem that this device exists is the one side complex structure, so the cost height, is that utilization of power efficient is low on the other hand.
The utility model content
The purpose of this utility model provides a kind of simple in structure, cheap, and can improve the adaptive LED illuminator constant-current source device of utilization of power efficient.
The technical solution of the utility model is: adaptive LED illuminator constant-current source device, it is characterized in that comprising voltage fluctuation testing circuit, A/D change-over circuit, control switch circuit, the voltage fluctuation testing circuit links to each other with the A/D change-over circuit, the A/D change-over circuit links to each other with the control switch circuit, magnitude of a voltage fluctuation in the voltage fluctuation testing circuit testing circuit, voltage fluctuation numerical value is transported to the control switch circuit by the A/D conversion, the control switch circuit drives the short circuit of corresponding LED switch according to the A/D transforming numerical, so that other LED lamp can obtain starting resistor.
Described LED control switch circuit controls 2 respectively
NIndividual LED lamp, N are the integer more than or equal to 0.
Described A/D change-over circuit is provided with the band-gap reference source circuit.
Effect of the present utility model is: adaptive LED illuminator constant-current source device, magnitude of a voltage fluctuation in the voltage fluctuation testing circuit testing circuit, voltage fluctuation numerical value is transported to the control switch circuit by the A/D conversion, the control switch circuit drives the short circuit of corresponding LED switch according to the A/D transforming numerical, so that other LED lamp can obtain starting resistor.Circuit of the present utility model is simple, cheap, can reduce the volume of device by integration mode, be user-friendly to, and this constant-current source device power consumption is little, can improve the service efficiency of electric energy, constant-current source device service efficiency commonly used at present is less than 94%, and constant-current source device of the present utility model, practical efficient can reach more than 99%.
Below in conjunction with drawings and Examples the utility model is described further.
Description of drawings
Accompanying drawing is circuit theory diagrams of the present utility model.
Embodiment
In the accompanying drawing, adaptive LED illuminator constant-current source device, comprise voltage fluctuation testing circuit 1, the A/D change-over circuit, the A/D change-over circuit is provided with the band-gap reference source circuit, ON-OFF control circuit, voltage fluctuation testing circuit 1 links to each other with the A/D change-over circuit, the A/D change-over circuit links to each other with the control switch circuit, magnitude of a voltage fluctuation in voltage fluctuation testing circuit 1 testing circuit, voltage fluctuation numerical value is transported to ON-OFF control circuit by the A/D conversion, and ON-OFF control circuit drives the short circuit of corresponding LED control switch according to the A/D transforming numerical, so that other LED lamp can obtain starting resistor.Present embodiment designs in 15% scope according to magnitude of a voltage fluctuation, ON-OFF control circuit is exported four tunnel control signals, control 1,2,4,8 LED lamp respectively, according to magnitude of a voltage fluctuation, the control switch circuit can select to control four-way switch, control 1-15 LED lamp switch, ON-OFF control circuit makes LED lamp short circuit in parallel with it by controlling the conducting of the triode that links to each other with the LED lamp, and voltage is almost nil, therefore just can make other LED lamps obtain starting resistor, keep operate as normal.
Claims (3)
1, adaptive LED illuminator constant-current source device, it is characterized in that comprising voltage fluctuation testing circuit, A/D change-over circuit, control switch circuit, the voltage fluctuation testing circuit links to each other with the A/D change-over circuit, the A/D change-over circuit links to each other with the control switch circuit, magnitude of a voltage fluctuation in the voltage fluctuation testing circuit testing circuit, voltage fluctuation numerical value is transported to the control switch circuit by the A/D conversion, the control switch circuit drives the short circuit of corresponding LED switch according to the A/D transforming numerical, so that other LED lamp can obtain starting resistor.
2, adaptive LED illuminator constant-current source device according to claim 1 is characterized in that described LED control switch circuit controls 2 respectively
NIndividual LED lamp, N are the integer more than or equal to 0.
3, adaptive LED illuminator constant-current source device according to claim 1 and 2 is characterized in that described A/D change-over circuit is provided with the band-gap reference source circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520008741 CN2785302Y (en) | 2005-03-21 | 2005-03-21 | Self-adaptive LED illuminating system constant-current source equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520008741 CN2785302Y (en) | 2005-03-21 | 2005-03-21 | Self-adaptive LED illuminating system constant-current source equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2785302Y true CN2785302Y (en) | 2006-05-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520008741 Expired - Fee Related CN2785302Y (en) | 2005-03-21 | 2005-03-21 | Self-adaptive LED illuminating system constant-current source equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2785302Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196627A (en) * | 2010-03-19 | 2011-09-21 | 技领半导体(上海)有限公司 | LED lighting string circuit containing long strings connected by a plurality of short strings |
| CN103283309A (en) * | 2010-12-16 | 2013-09-04 | 李东源 | Led lighting apparatus driven by alternating current |
-
2005
- 2005-03-21 CN CN 200520008741 patent/CN2785302Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196627A (en) * | 2010-03-19 | 2011-09-21 | 技领半导体(上海)有限公司 | LED lighting string circuit containing long strings connected by a plurality of short strings |
| CN103283309A (en) * | 2010-12-16 | 2013-09-04 | 李东源 | Led lighting apparatus driven by alternating current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Taizhou First Technology Electronic Co., Ltd. Assignor: Huang Yuangang Contract fulfillment period: 2007.2.28 to 2015.3.20 Contract record no.: 2009330001767 Denomination of utility model: Self-adaptive LED illuminating system constant-current source equipment Granted publication date: 20060531 License type: Exclusive license Record date: 20090731 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.2.28 TO 2015.3.20; CHANGE OF CONTRACT Name of requester: TAIZHOU FOSTERS SCIENCE AND TECHNOLOGY ELECTRONICS Effective date: 20090731 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060531 Termination date: 20100321 |