CN204598368U - A kind of LED logic light adjusting circuit - Google Patents
A kind of LED logic light adjusting circuit Download PDFInfo
- Publication number
- CN204598368U CN204598368U CN201520149978.4U CN201520149978U CN204598368U CN 204598368 U CN204598368 U CN 204598368U CN 201520149978 U CN201520149978 U CN 201520149978U CN 204598368 U CN204598368 U CN 204598368U
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- Prior art keywords
- led
- adjusting circuit
- light adjusting
- triodes
- logic light
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- 238000005284 basis set Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of LED logic light adjusting circuit, comprise drive integrated circult, LED, driving resistance, two triodes, two operating resistances, described drive integrated circult pin comprises: V
iN, SW,
oVD, FB, GND, input direct voltage respectively with V
iN, SW,
oVD, LED, driving resistance, Earth Phase series connection; One end of described two operating resistances is connected with the collector electrode of two triodes respectively, the other end of two operating resistances is all connected with FB, the transmitting of two triodes collects equal ground connection, and two triode basis sets are used for receive logic signal, and described operating resistance, triode are all in parallel with driving resistance; Described GND ground connection.A kind of LED logic light adjusting circuit that the utility model provides, by the input of the logical signal of two transistor bases, LED can recall the different current value of fourth gear, thus reaches the different brightness effects of LED tetra-kinds, and structure is simple, and stability is high, and cost is low.
Description
Technical field
The utility model relates to a kind of LED logic light adjusting circuit, belongs to LED light regulating technology field.
Background technology
Along with the arrival of energy crisis, efficient lighting technology obtains people and pays close attention to widely.LED obtains general application in numerous application, as all kinds of consumption electronic product---the back light etc. of mobile phone, PDA, LCD TV.For improving serviceability and the scope of application of LED illumination circuit, a kind of high-brightness white-light LED light-dimming method of tool cost advantage will be introduced herein.
Utility model content
Object: in order to overcome the deficiencies in the prior art, the utility model provides a kind of LED logic light adjusting circuit.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of LED logic light adjusting circuit, comprise drive integrated circult, LED, driving resistance, two triodes, two operating resistances, described drive integrated circult pin comprises: V
iN, SW,
oVD, FB, GND, input direct voltage respectively with V
iN, SW,
oVD, LED, driving resistance, Earth Phase series connection; One end of described two operating resistances is connected with the collector electrode of two triodes respectively, the other end of two operating resistances is all connected with FB, the transmitting of two triodes collects equal ground connection, and two triode basis sets are used for receive logic signal, and described operating resistance, triode are all in parallel with driving resistance; Described GND ground connection.
Described input voltage is 2.8-5.5V.
Also comprise inductance, voltage stabilizing didoe, described inductance is connected on V
iN, between SW, described voltage stabilizing didoe is connected between SW, OVD.
Preferably, described triode is set to N raceway groove isolated gate FET.
Preferably, described drive integrated circult is set to TB62737FUG.
Preferably, also comprise protection electric capacity, described protection electric capacity and total loop are in parallel.
Preferably, also comprise filter capacitor, described filter capacitor and LED, drive resistance to be in parallel.
Beneficial effect: a kind of LED logic light adjusting circuit that the utility model provides, by the input of the logical signal of two transistor bases, LED can recall the different current value of fourth gear, thus reach the different brightness effects of LED tetra-kinds, structure is simple, and stability is high, and cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of LED logic light adjusting circuit, comprise drive integrated circult 1, LED 2, drive resistance 3, two triodes 4, two operating resistances 5, described drive integrated circult 1 pin comprises: V
iN, SW,
oVD, FB, GND, input direct voltage respectively with V
iN, SW,
oVD, LED 2, driving resistance 3, Earth Phase series connection; One end of described two operating resistances 5 is connected with the collector electrode of two triodes 4 respectively, the other end of two operating resistances 5 is all connected with FB, the transmitting of two triodes 4 collects equal ground connection, two triode 4 basis sets are used for receive logic signal, and described operating resistance 5, triode 4 are all in parallel with driving resistance 3; Described GND ground connection.
Described input voltage is 2.8-5.5V.
Also comprise inductance 6, voltage stabilizing didoe 7, described inductance 6 is connected on V
iN, between SW, described voltage stabilizing didoe 7 is connected between SW, OVD.
Preferably, described triode 4 is set to N raceway groove isolated gate FET.
Preferably, described drive integrated circult 1 is set to TB62737FUG.
Preferably, also comprise protection electric capacity 8, described protection electric capacity 8 is in parallel with total loop.
Preferably, also comprise filter capacitor 9, described filter capacitor 9 with LED 2, drive resistance 3 to be in parallel.
V
iN: Input voltage terminal, SW: output switching terminal,
contactor end, OVD: overvoltage protection end, FB: feedback voltage end, GND: earth terminal.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a LED logic light adjusting circuit, comprises drive integrated circult, LED, driving resistance, it is characterized in that: also comprise two triodes, two operating resistances, described drive integrated circult pin comprises: V
iN, SW,
oVD, FB, GND, input direct voltage respectively with V
iN, SW,
oVD, LED, driving resistance, Earth Phase series connection; One end of described two operating resistances is connected with the collector electrode of two triodes respectively, the other end of two operating resistances is all connected with FB, the transmitting of two triodes collects equal ground connection, and two triode basis sets are used for receive logic signal, and described operating resistance, triode are all in parallel with driving resistance; Described GND ground connection.
2. a kind of LED logic light adjusting circuit according to claim 1, is characterized in that: described input voltage is 2.8-5.5V.
3. a kind of LED logic light adjusting circuit according to claim 2, it is characterized in that: also comprise inductance, voltage stabilizing didoe, described inductance is connected on V
iN, between SW, described voltage stabilizing didoe is connected between SW, OVD.
4. a kind of LED logic light adjusting circuit according to claim 3, is characterized in that: described triode is set to N raceway groove isolated gate FET.
5. a kind of LED logic light adjusting circuit according to claim 4, is characterized in that: described drive integrated circult is set to TB62737FUG.
6. a kind of LED logic light adjusting circuit according to claim 5, it is characterized in that: also comprise protection electric capacity, described protection electric capacity and total loop are in parallel.
7. a kind of LED logic light adjusting circuit according to any one of claim 1 to 6, is characterized in that: also comprise filter capacitor, described filter capacitor and LED, drives resistance to be in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520149978.4U CN204598368U (en) | 2015-03-16 | 2015-03-16 | A kind of LED logic light adjusting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520149978.4U CN204598368U (en) | 2015-03-16 | 2015-03-16 | A kind of LED logic light adjusting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204598368U true CN204598368U (en) | 2015-08-26 |
Family
ID=53934472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520149978.4U Expired - Fee Related CN204598368U (en) | 2015-03-16 | 2015-03-16 | A kind of LED logic light adjusting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204598368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104703353A (en) * | 2015-03-16 | 2015-06-10 | 句容市万福达工艺品厂 | LED (light emitting diode) logic dimming circuit |
-
2015
- 2015-03-16 CN CN201520149978.4U patent/CN204598368U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104703353A (en) * | 2015-03-16 | 2015-06-10 | 句容市万福达工艺品厂 | LED (light emitting diode) logic dimming circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20160316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |