CN201491331U - LED lamp control circuit and refrigerator provided with the control circuit - Google Patents
LED lamp control circuit and refrigerator provided with the control circuit Download PDFInfo
- Publication number
- CN201491331U CN201491331U CN2009201710676U CN200920171067U CN201491331U CN 201491331 U CN201491331 U CN 201491331U CN 2009201710676 U CN2009201710676 U CN 2009201710676U CN 200920171067 U CN200920171067 U CN 200920171067U CN 201491331 U CN201491331 U CN 201491331U
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- China
- Prior art keywords
- led lamp
- control circuit
- refrigerator
- autotransformer
- capacitor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a refrigerator, in particular to a refrigerator with an LED lamp, and provides an LED lamp control circuit capable of providing high voltage and saving great energy, and a refrigerator provided with the control circuit. The refrigerator comprises a resistor (R2) of an LED lamp and the control circuit of the LED lamp; the control circuit comprises a capacitor (C2); one end of the capacitor (C2) is connected with the negative electrode of the resistor (R2) of the LED lamp, and the other end of the capacitor (C2) is connected with a power source; the refrigerator further comprises an autotransformer (M); and the two ends of the autotransformer (M) are connected with the power source, and a regulating end of the autotransformer (M) is connected with the positive electrode of the LED lamp (R2). The LED lamp control circuit can provide high voltage for the LED lamp, and has the advantages of low loss and low cost.
Description
Technical field
The utility model relates to a kind of refrigerator, specifically, relates to a kind of refrigerator of the LED of being provided with lamp.
Background technology
The refrigerator of prior art much all is the ordinary lamps of using, the 220VLED lamp of using on some refrigerators is also arranged, as shown in Figure 1, still the control circuit of LED lamp of the prior art generally is to use the RC resistance-capacitance depressurization, and 220V is reduced to low pressure, rectifying and wave-filtering becomes direct current as power supply again, supply with the LED lamp, with the control circuit of RC resistance-capacitance depressurization circuit supply, owing to be subjected to the restriction of capacitance, so power is not too large, also consumes certain energy in addition on the resistance.
Summary of the invention
The purpose of this utility model is to overcome above defective, and provide a kind of high voltage can be provided, and very energy-conservation LED lamp control circuit and the refrigerator of this control circuit is set.
The technical scheme of LED lamp control circuit of the present utility model is such: it comprises LED lamp R2, capacitor C 2, capacitor C 2 one ends are connected with the negative pole of LED lamp R2, the other end is connected with power supply, it also comprises autotransformer M, the two ends of autotransformer M are connected with power supply, and the adjustable side is connected with the positive pole of LED lamp R2.
The technical scheme that the refrigerator of above-mentioned LED lamp control circuit is set of the present utility model is such: it comprises LED lamp R2 and control circuit thereof, its control circuit comprises capacitor C 2, capacitor C 2 one ends are connected with the negative pole of LED lamp R2, the other end is connected with power supply, it also comprises autotransformer M, the two ends of autotransformer M are connected with power supply, and the adjustable side is connected with the positive pole of LED lamp R2.
LED lamp control circuit of the present utility model provides than higher voltage not only can for the LED lamp, and loss is little, cost is low.
Description of drawings
Fig. 1 is the circuit diagram of LED lamp control circuit of the prior art;
Fig. 2 is the structural representation of LED lamp control circuit of the present utility model.
Embodiment
Refrigerator of the present utility model comprises LED lamp and control circuit thereof, its control circuit comprises capacitor C 2, capacitor C 2 one ends are connected with the negative pole of LED lamp R2, the other end is connected with power supply, and it also comprises autotransformer M, and the two ends of autotransformer M are connected with power supply, the adjustable side is connected with the positive pole of LED lamp R2, autotransformer M is the transformer that has only a winding, when using as step-down transformer, extracts a part of wire turn out as secondary winding from winding; When using as step-up transformer, applied voltage only is added on a part of wire turn of winding.Usually that part of winding that belongs to simultaneously once with secondary is called common winding, remainder is called the series connection winding, compares with common transformer with the autotransformer of capacity, not only size is little, and the efficient height, and transformer capacity is big more, and voltage is high more. and this advantage is just all the more outstanding.Therefore along with the raising of power system development, electric pressure and the increase of transmission capacity, autotransformer is big owing to its capacity, loss is little, cost is low is used widely.
Claims (2)
1. LED lamp control circuit, it comprises LED lamp R2, capacitor C 2, capacitor C 2 one ends are connected with the negative pole of LED lamp R2, the other end is connected with power supply, it is characterized in that: it also comprises autotransformer M, and the two ends of autotransformer M are connected with power supply, and the adjustable side is connected with the positive pole of LED lamp R2.
2. refrigerator that the described LED lamp control circuit of claim 1 is set, it comprises LED lamp R2 and control circuit thereof, its control circuit comprises capacitor C 2, capacitor C 2 one ends are connected with the negative pole of LED lamp R2, the other end is connected with power supply, it is characterized in that: it also comprises autotransformer M, and the two ends of autotransformer M are connected with power supply, and the adjustable side is connected with the positive pole of LED lamp R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201710676U CN201491331U (en) | 2009-08-17 | 2009-08-17 | LED lamp control circuit and refrigerator provided with the control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201710676U CN201491331U (en) | 2009-08-17 | 2009-08-17 | LED lamp control circuit and refrigerator provided with the control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201491331U true CN201491331U (en) | 2010-05-26 |
Family
ID=42430194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201710676U Expired - Fee Related CN201491331U (en) | 2009-08-17 | 2009-08-17 | LED lamp control circuit and refrigerator provided with the control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201491331U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106900111A (en) * | 2017-03-01 | 2017-06-27 | 深圳盈特创智能科技有限公司 | A kind of LED light adjusting system |
-
2009
- 2009-08-17 CN CN2009201710676U patent/CN201491331U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106900111A (en) * | 2017-03-01 | 2017-06-27 | 深圳盈特创智能科技有限公司 | A kind of LED light adjusting system |
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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: 20100526 Termination date: 20140817 |
|
| EXPY | Termination of patent right or utility model |