CN203251484U - Constant current control circuit in electronic candle lamp - Google Patents
Constant current control circuit in electronic candle lamp Download PDFInfo
- Publication number
- CN203251484U CN203251484U CN2013202487380U CN201320248738U CN203251484U CN 203251484 U CN203251484 U CN 203251484U CN 2013202487380 U CN2013202487380 U CN 2013202487380U CN 201320248738 U CN201320248738 U CN 201320248738U CN 203251484 U CN203251484 U CN 203251484U
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- China
- Prior art keywords
- emitting diode
- light
- control circuit
- electronic candle
- candle lamp
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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.)
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Abstract
The utility model provides a constant current control circuit in an electronic candle lamp, which belongs to the technical field of circuits. The constant current control circuit solves the problem of short LED lamp service life of the existing electronic candle lamp. The constant current control circuit in the electronic candle lamp comprises a power supply, a switch, a capacitor and a light emitting diode. The capacitor is connected in parallel with the light emitting diode and then is connected in parallel with the positive pole and the negative pole of the power supply. The switch is connected between the power supply, the capacitor and the light emitting diode. Both ends of the light emitting diode are connected with a voltage stabilizing unit which can provide stable voltage for the work of the light emitting diode. According to the constant current control circuit in the electronic candle lamp, stable voltage is provided for the work of an LED lamp, so that the service life of the LED lamp is prolonged.
Description
Technical field
The utility model belongs to the circuit engineering field, relates to the current stabilization control circuit in a kind of current stabilization control circuit, particularly a kind of electronic candle lamp.
Background technology
Present existing electronic candle lamp is to adopt the LED lamp to be used as lighting source basically, LED lamp, switch, battery supply and the circuit that is arranged on the pcb board have consisted of control circuit, present existing control circuit exists some problems: mainly provide to the electric current of LED lamp stablely not, cause the LED lamp low useful life.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, uses the current stabilization control circuit that prolongs in the LED lamp electronic candle lamp in useful life to the LED lamp thereby a kind of stabling current that can provide has been provided.
The purpose of this utility model can realize by following technical proposal: the current stabilization control circuit in a kind of electronic candle lamp, comprise power supply, switch, electric capacity and light-emitting diode, described electric capacity and light-emitting diode are connected in parallel afterwards and the positive and negative electrode of power supply is connected in parallel, described switch is connected between power supply and electric capacity, the light-emitting diode, and it is characterized in that: being connected with on the two ends of described light-emitting diode to provide the voltage regulation unit of burning voltage to light-emitting diode work.
In the current stabilization control circuit in above-mentioned a kind of electronic candle lamp, described voltage regulation unit comprise have input D, the voltage stabilizing chip of the output VDD of earth terminal GND and stable output voltage, output VDD is connected with the positive pole of light-emitting diode, input D is connected with the negative pole of light-emitting diode, and earth terminal GNG is connected with power cathode.
In the current stabilization control circuit in above-mentioned a kind of electronic candle lamp, also be connected with the inductance resistance R between described input D and the light-emitting diode negative pole.
Compared with prior art, power supply provides supply voltage to the voltage stabilizing chip operation in this current stabilization control circuit, the voltage transitions that the voltage stabilizing chip can provide power supply becomes stabilized voltage power supply to offer light-emitting diode work, so that light-emitting diode can work all the time, thereby prolonged useful life of light-emitting diode under the stabling current environment; The inductance resistance R has the current-limiting protection effect, thereby prevents by the excessive damage of the electric current of light-emitting diode light-emitting diode.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, current stabilization control circuit in this electronic candle lamp comprises power supply DC, K switch 1, capacitor C 1, light-emitting diode D1, inductance resistance R 1 and the voltage stabilizing chip that is in series by two button cells, and the voltage stabilizing chip has input D, earth terminal GND and output VDD.One end of K switch 1 is connected with the positive pole of power supply DC, the other end is connected with the positive pole of light-emitting diode D1, the wherein end that voltage stabilizing chip output VDD is connected with capacitor C respectively, the other end of capacitor C 1 and voltage stabilizing chip earth terminal GND all are connected with the negative pole of power supply DC, and voltage stabilizing chip input D is connected on the negative pole of light-emitting diode by inductance resistance R 1.
The operation principle of this current stabilization control circuit is as follows: power supply DC powers to the voltage stabilizing chip operation, voltage stabilizing chip operation stable output voltage offers light-emitting diode D1 work, infringement is very little thereby light-emitting diode D1 works under the environment of stabling current all the time, prolonged useful life of light-emitting diode.Inductance resistance R 1 plays the current-limiting protection effect to light-emitting diode D1.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (3)
1. the current stabilization control circuit in the electronic candle lamp, comprise power supply, switch, electric capacity and light-emitting diode, described electric capacity and light-emitting diode are connected in parallel afterwards and the positive and negative electrode of power supply is connected in parallel, described switch is connected between power supply and electric capacity, the light-emitting diode, and it is characterized in that: being connected with on the two ends of described light-emitting diode to provide the voltage regulation unit of burning voltage to light-emitting diode work.
2. the current stabilization control circuit in a kind of electronic candle lamp according to claim 1, it is characterized in that, described voltage regulation unit comprise have input D, the voltage stabilizing chip of the output VDD of earth terminal GND and stable output voltage, output VDD is connected with the positive pole of light-emitting diode, input D is connected with the negative pole of light-emitting diode, and earth terminal GNG is connected with power cathode.
3. the current stabilization control circuit in a kind of electronic candle lamp according to claim 2 is characterized in that, also is connected with the inductance resistance R between described input D and the light-emitting diode negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202487380U CN203251484U (en) | 2013-04-29 | 2013-04-29 | Constant current control circuit in electronic candle lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202487380U CN203251484U (en) | 2013-04-29 | 2013-04-29 | Constant current control circuit in electronic candle lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203251484U true CN203251484U (en) | 2013-10-23 |
Family
ID=49377896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202487380U Expired - Fee Related CN203251484U (en) | 2013-04-29 | 2013-04-29 | Constant current control circuit in electronic candle lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203251484U (en) |
-
2013
- 2013-04-29 CN CN2013202487380U patent/CN203251484U/en not_active Expired - Fee Related
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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: 20131023 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |