CN202907306U - Circuit capable of realizing section regulation on LED lamp brightness - Google Patents
Circuit capable of realizing section regulation on LED lamp brightness Download PDFInfo
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- CN202907306U CN202907306U CN 201220608782 CN201220608782U CN202907306U CN 202907306 U CN202907306 U CN 202907306U CN 201220608782 CN201220608782 CN 201220608782 CN 201220608782 U CN201220608782 U CN 201220608782U CN 202907306 U CN202907306 U CN 202907306U
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Abstract
The utility model discloses a circuit capable of realizing section regulation on LED lamp brightness. The circuit comprises a constant current drive power supply, a section regulation circuit parallelly connected with a current-limiting resistor R0, an output circuit electrically connected with the low voltage output end of the constant current drive power supply, and an LED lamp electrically connected with the output circuit, wherein the constant current drive power supply is electrically connected with an input power supply, and the low voltage output end of the constant current drive power supply is provided with the current-limiting resistor R0; the section regulation circuit comprises a gear regulation switch and a plurality of parallelly-connected regulation resistors; one end of the current-limiting resistor R0 is electrically connected with the gear regulation switch, and the other end of the current-limiting resistor R0 is electrically connected with the common end of the plurality of parallelly-connected regulation resistors; and the gear regulation switch chooses to be electrically connected with one of the plurality of parallelly-connected regulation resistors or remains in a neutral gear. Thus, section regulation on the brightness of the LED lamp can be realized, and the circuit has the advantages of low production cost, stable light regulation and simple and easy operation.
Description
Technical field
The utility model relates to technical field of lamps, relates in particular to the sectional-regulated circuit of a kind of LED of realization lamp brightness.
Background technology
At present, the LED light regulating technology mainly contains following several:
1, controllable silicon light modulation, this light regulating technology develops in incandescent lamp, because incandescent lamp is pure resistive load, utilize the silicon controlled wave chopping technology, can realize smoothly light modulation, but to LED and impracticable, present compatible silicon controlled dimming power source, efficient is all very low usually, and 80% all is difficult to reach;
2, linearity light adjusting utilizes the special-purpose light modulation pin of constant current chip, adjusts the electric current of LED, reaches the purpose of light modulation, adopt the dimming effect of this kind technology pretty good, but wiring is complicated, is unfavorable for the illuminations such as fluorescent lamp street lamp;
3, PWM light modulation, the method and linearity light adjusting are similar, are mainly used on the lamp dimmer;
4, remote control light modulating, two kinds of minute infrared remote control and wireless remote controls, it implements all more complicated;
5, sectional dimming, the switch of this kind dimming mode utilization on wall reaches the purpose of light modulation, the advantage of the method is to need not to increase extra Light modulating device, light fixture can be installed by existing mounting means, every lamp all can be realized light modulation, because this light modulation is fully by the control of mains switch chip internal, in the full voltage range, no matter be operated under which kind of brightness, all can realize high efficiency and high power factor.
And in the market LED lamp light-regulating device easily hold occur or cause noise, stroboscopic, power factor is deteriorated, electricity conversion descends, the shortcoming that is difficult to mate fully with the different LED light fixture, and in some cases, even cause electromagnetic interference (EMI) or relevant electronic devices and components were had the quality wild effects such as major injury.
The utility model content
The purpose of this utility model is to overcome defects of the prior art, provides the reliable segmented of a kind of energy to regulate the LED lamp brightness, have simple in structure, power stability, the practical sectional-regulated circuit of realized LED lamp brightness.
For achieving the above object, the technical scheme that the utility model provides is as follows: provide a kind of LED of realization lamp brightness sectional-regulated circuit, comprise constant-current driving power supply, described constant-current driving power supply is electrically connected with input power, the low-voltage output of this constant-current driving power supply is provided with current-limiting resistance R0, also comprise the sectional-regulated circuit that is connected in parallel with current-limiting resistance R0, the output circuit that is electrically connected with the low-voltage output of constant-current driving power supply, and the LED light fixture that is electrically connected with output circuit, described sectional-regulated circuit is by gears regulating switch, and the regulating resistance of several connections parallel with one another consists of, described current-limiting resistance R0 one end is electrically connected with gears regulating switch, the common end of the current-limiting resistance R0 other end and several regulating resistances that are connected parallel with one another is electrically connected, described gears regulating switch select one be electrically connected or place neutral with several regulating resistances that are connected parallel with one another.
The beneficial effect of the circuit that the LED of realization lamp brightness described in the utility model is sectional-regulated is: by being connected in parallel to a sectional-regulated circuit on the current-limiting resistance R0, this sectional-regulated circuit is by gears regulating switch, and the regulating resistance of several connections parallel with one another consists of, by changing the gears regulating switch of this sectional-regulated circuit, gears regulating switch is connected on the regulating resistance of different resistances, thereby change total resistance of the current-limiting resistance of constant-current driving power supply low-voltage output, and then the size of current of change output circuit, realize the brightness regulation of LED light fixture, reach the effect of sectional-regulated LED lamp brightness, have simple in structure, simple installation, practical advantage, the defective of having avoided relevant in the market LED dimmer to cause.
The upper sectional-regulated circuit that connects of this external current-limiting resistance R0, realize the segmented light modulation of LED light fixture, it does not damage LED luminescence chip, constant-flow driver components and parts, has that cost is low, power stability and simple, satisfies commercial lighting to the actual demand of LED lamp light-regulating function.
Below in conjunction with drawings and Examples the sectional-regulated circuit of the LED of realization lamp brightness described in the utility model is described further.
Description of drawings
Fig. 1 is the sectional-regulated circuit theory diagrams of the LED of realization lamp brightness described in the utility model.
Embodiment
Below be the preferred example of the sectional-regulated circuit of the LED of realization lamp brightness described in the utility model, therefore do not limit protection range of the present utility model.
With reference to Fig. 1, provide a kind of LED of realization lamp brightness sectional-regulated circuit, comprise constant-current driving power supply 1, described constant-current driving power supply 1 is electrically connected with input power, the low-voltage output of this constant-current driving power supply 1 is provided with current-limiting resistance R0, also comprise the sectional-regulated circuit 2 that is connected in parallel with current-limiting resistance R0, the output circuit 3 that is electrically connected with the low-voltage output of constant-current driving power supply 1, and the LED light fixture 4 that is electrically connected with output circuit 3, described sectional-regulated circuit 2 is by gears regulating switch 5, and the regulating resistance of several connections parallel with one another consists of, described current-limiting resistance R0 one end is electrically connected with gears regulating switch 5, the common end of the current-limiting resistance R0 other end and several regulating resistances that are connected parallel with one another is electrically connected, described gears regulating switch 5 select one be electrically connected or place neutral 6 with several regulating resistances that are connected parallel with one another.
By a sectional-regulated circuit 2 in parallel on current-limiting resistance R0, the user can change gears regulating switch 5 according to the actual requirements, make gears regulating switch 5 connect different gears, because the adjusting resistance values that different gears are corresponding is different, thereby total resistance of the current-limiting resistance of constant-current driving power supply low-voltage output is regulated in realization flexibly, change the size of output current, and then change the brightness of LED light fixture, realized the light modulation of LED light fixture segmented.
Described sectional-regulated circuit 2 is by gears regulating switch 5, the first regulating resistance R1 of connection parallel with one another and the second regulating resistance R2 consist of, described current-limiting resistance R0 one end is electrically connected with gears regulating switch 5, the current-limiting resistance R0 other end is electrically connected with the common end of the first regulating resistance R1 and the second regulating resistance R2, described gears regulating switch 5 select one be electrically connected or place neutral 6 with the first regulating resistance R1 and the second regulating resistance R2.
Above-described embodiment is the better execution mode of the utility model; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (2)
1. the circuit that can realize that the LED lamp brightness is sectional-regulated, comprise constant-current driving power supply (1), described constant-current driving power supply (1) is electrically connected with input power, the low-voltage output of this constant-current driving power supply (1) is provided with current-limiting resistance R0, it is characterized in that, also comprise the sectional-regulated circuit (2) that is connected in parallel with current-limiting resistance R0, the output circuit (3) that is electrically connected with the low-voltage output of constant-current driving power supply (1), and the LED light fixture (4) that is electrically connected with output circuit (3), described sectional-regulated circuit (2) is by gears regulating switch (5), and the regulating resistance of several connections parallel with one another consists of, described current-limiting resistance R0 one end is electrically connected with gears regulating switch (5), the common end of the current-limiting resistance R0 other end and several regulating resistances that are connected parallel with one another is electrically connected, described gears regulating switch (5) select one be electrically connected or place neutral (6) with several regulating resistances that are connected parallel with one another.
2. the circuit of realizing that the LED lamp brightness is sectional-regulated according to claim 1, it is characterized in that, described sectional-regulated circuit (2) is by gears regulating switch (5), the first regulating resistance R1 of connection parallel with one another and the second regulating resistance R2 consist of, described current-limiting resistance R0 one end is electrically connected with gears regulating switch (5), the current-limiting resistance R0 other end is electrically connected with the common end of the first regulating resistance R1 and the second regulating resistance R2, described gears regulating switch (5) select one be electrically connected or place neutral (6) with the first regulating resistance R1 and the second regulating resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220608782 CN202907306U (en) | 2012-11-16 | 2012-11-16 | Circuit capable of realizing section regulation on LED lamp brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220608782 CN202907306U (en) | 2012-11-16 | 2012-11-16 | Circuit capable of realizing section regulation on LED lamp brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202907306U true CN202907306U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220608782 Expired - Fee Related CN202907306U (en) | 2012-11-16 | 2012-11-16 | Circuit capable of realizing section regulation on LED lamp brightness |
Country Status (1)
| Country | Link |
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| CN (1) | CN202907306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693805A (en) * | 2020-05-28 | 2020-09-22 | 珠海格力电器股份有限公司 | Detection circuit and detection method for detecting operating state of sterilization device |
-
2012
- 2012-11-16 CN CN 201220608782 patent/CN202907306U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111693805A (en) * | 2020-05-28 | 2020-09-22 | 珠海格力电器股份有限公司 | Detection circuit and detection method for detecting operating state of sterilization device |
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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: 20130424 Termination date: 20141116 |
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| EXPY | Termination of patent right or utility model |