CN103533693A - LED (light emitting diode) Indicating lamp provided with 220 V alternating current power supply - Google Patents
LED (light emitting diode) Indicating lamp provided with 220 V alternating current power supply Download PDFInfo
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- CN103533693A CN103533693A CN201310521031.7A CN201310521031A CN103533693A CN 103533693 A CN103533693 A CN 103533693A CN 201310521031 A CN201310521031 A CN 201310521031A CN 103533693 A CN103533693 A CN 103533693A
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Abstract
The invention relates to an LED indicating lamp provided with a 220 V alternating current power supply. The LED indicating lamp is characterized by comprising the 220 V alternating current power supply, a voltage reduction and half-wave rectifying circuit and a 5 V voltage stabilization and indicating lamp circuit, wherein the voltage reduction and half-wave rectifying circuit comprises a voltage reduction capacitor C1 and a silicon rectifier diode D1; the 5 V voltage stabilization and indicating lamp circuit comprises a silicon voltage stabilization diode DW, a current-limiting resistor R1 and a highlight LED; one end of the voltage reduction capacitor C1 is connected with an electric firing line end L of a 220 V alternating current; the other end of the voltage reduction capacitor C1 is connected with a positive pole of the silicon rectifier diode D1; a negative pole of the silicon rectifier diode D1 is connected with a negative pole of the silicon voltage stabilization diode DW and one end of the current-limiting resistor R1; the other end of the current-limiting resistor R1 is connected with a positive pole of the highlight LED; and a positive pole of the silicon voltage stabilization diode DW and a negative pole of the highlight LED are connected with a null line end N of the 220 V alternating current. The LED indicating lamp is suitable for realizing 220 V alternating current indication and is applicable to various electronic devices.
Description
Technical field
The invention belongs to light-emitting diode applied technical field, is about a kind of 220V AC power light emitting diode lamp.
Background technology
For installing 220V AC power indicator light on electronic equipment additional, the resistance (0.5W) that data is introduced an available 100K Ω adds a light-emitting diode, and its actual effect is that the brightness of light-emitting diode is very low.So simple way, light-emitting diode can only pass through about 2mA electric current, light-emitting diode just can only be lighted.Because light-emitting diode belongs to " current mode device ", simply as 220V AC power, indicate, pressure drop on dropping resistor is very large, most of electric energy mainly consumes on this dropping resistor, the voltage at light-emitting diode two ends is very low, so this dropping resistor will generate heat seriously, dropping resistor is easy to be burned, and has potential safety hazard.
High brightness LED pressure drop is generally 1.4～2V, its operating current is at 10～20mA, according to this calculation of parameter, the capacitance decompression of suitable capacity for the present invention, utilize silicon rectifier diode to carry out halfwave rectifier, for high-brightness light emitting diode designs a stabilized voltage power supply, light-emitting diode luminance requirement can be reached again, energy-conservation requirement can be realized again.
220V AC power light emitting diode lamp of the present invention has the advantages such as light-emitting diode luminance is high, little power consumption, reliable working performance, is adapted at being used as 220V alternating current in various electronic equipments and indicates.
Below describe 220V AC power light emitting diode lamp of the present invention related relevant technologies content in implementation process in detail.
Summary of the invention
Goal of the invention and beneficial effect: for installing 220V AC power indicator light on electronic equipment additional, the resistance (0.5W) that data is introduced an available 100K Ω adds a light-emitting diode, and its actual effect is that the brightness of light-emitting diode is very low.So simple way, light-emitting diode can only pass through about 2mA electric current, light-emitting diode just can only be lighted.Because light-emitting diode belongs to " current mode device ", simply, as the indication of 220V AC power, most of electric energy mainly consumes on this dropping resistor, and the voltage at light-emitting diode two ends is very low, so this dropping resistor will generate heat, seriously and be easily burned, have potential safety hazard.
The present invention's suitable capacity capacitance decompression, utilizes silicon rectifier diode to carry out halfwave rectifier, then for high-brightness light emitting diode designs a stabilized voltage power supply, can reach light-emitting diode luminance requirement, can realize energy-conservation requirement again.The present invention is adapted at being used as 220V alternating current in various electronic equipments and indicates.
Circuit working principle: 220V AC power light emitting diode lamp circuit by 220V alternating current by decompression capacitor C1, silicon rectifier diode D1 step-down rectifier, utilize silicon voltage regulator diode DW to obtain 5V stable DC voltage, by current-limiting resistance R1, light high-brightness light emitting diode LED.
Not enough in order to solve high-brightness light emitting diode operating voltage, cause the problem of high-brightness luminous two utmost point luminance shortage, in circuit specially for the reliably working of high-brightness light emitting diode has designed stabilized voltage power supply.The place in circuit of silicon voltage regulator diode has two effects: the one, and for high-brightness light emitting diode provides working power, the 2nd, guarantee that high-brightness light emitting diode is not punctured by 220V alternating current reverse voltage.
Technical scheme: 220V AC power light emitting diode lamp, it comprises 220V AC power, step-down and half-wave rectifying circuit, 5V voltage stabilizing and indicator light circuit, it is characterized in that:
Step-down and half-wave rectifying circuit are comprised of decompression capacitor C1, silicon rectifier diode D1; 5V voltage stabilizing and indicator light circuit are comprised of silicon voltage regulator diode DW, current-limiting resistance R1 and high-brightness light emitting diode LED; A termination 220V alternating current electricity live wire end L of decompression capacitor C1, the positive pole of another termination silicon rectifier diode D1 of decompression capacitor C1, the negative pole of silicon rectifier diode D1 connects one end of negative pole and the current-limiting resistance R1 of silicon voltage regulator diode DW, the positive pole of another termination high-brightness light emitting diode LED of current-limiting resistance R1, the negative pole of the positive pole of silicon voltage regulator diode DW and high-brightness light emitting diode LED meets 220V alternating current zero line side N.
Accompanying drawing explanation
Accompanying drawing is embodiment circuit working schematic diagram of 220V AC power light emitting diode lamp provided by the invention.
Embodiment
According to the circuit working schematic diagram of 220V AC power light emitting diode lamp shown in the drawings and accompanying drawing explanation, and according to annexation between components and parts in the each several part circuit described in summary of the invention, and the components and parts technical parameter described in execution mode requires and circuit production main points are implemented to realize the present invention, below in conjunction with embodiment, correlation technique of the present invention is further described.
The selection of components and parts and technical parameter thereof
C1 is decompression capacitor, and its capacity is selected the electric capacity of the dacron of 0.39～0.47 μ F/400V;
D1 is silicon rectifier diode, and model is 1N4007;
R1 is current-limiting resistance, selects 1/8～1/4W metalfilmresistor or fixed carbon resister, and its resistance is 430 Ω;
DW is silicon voltage regulator diode, and selecting voltage stabilizing value is the silicon voltage regulator diode of 5V;
LED is high-brightness light emitting diode, uses the high brightness LED of diameter 5mm, and the color of light-emitting diode can be selected as required.
Circuit production main points and circuit debugging
The circuit structure of 220V AC power light emitting diode lamp is fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing is welded to specifications, physical connection line and welding quality are after careful inspection is correct, circuit of the present invention does not need to carry out any debugging substantially, and connecting 220V AC power can work;
If desired further improve the brightness of high-brightness light emitting diode, can suitably reduce the resistance of current-limiting resistance R1.
Claims (1)
1. a 220V AC power light emitting diode lamp, it comprises 220V AC power, step-down and half-wave rectifying circuit, 5V voltage stabilizing and indicator light circuit, it is characterized in that:
Described step-down and half-wave rectifying circuit are comprised of decompression capacitor C1, silicon rectifier diode D1; Described 5V voltage stabilizing and indicator light circuit are comprised of silicon voltage regulator diode DW, current-limiting resistance R1 and high-brightness light emitting diode LED; A termination 220V alternating current electricity live wire end L of decompression capacitor C1, the positive pole of another termination silicon rectifier diode D1 of decompression capacitor C1, the negative pole of silicon rectifier diode D1 connects one end of negative pole and the current-limiting resistance R1 of silicon voltage regulator diode DW, the positive pole of another termination high-brightness light emitting diode LED of current-limiting resistance R1, the negative pole of the positive pole of silicon voltage regulator diode DW and high-brightness light emitting diode LED meets 220V alternating current zero line side N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521031.7A CN103533693A (en) | 2013-10-28 | 2013-10-28 | LED (light emitting diode) Indicating lamp provided with 220 V alternating current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521031.7A CN103533693A (en) | 2013-10-28 | 2013-10-28 | LED (light emitting diode) Indicating lamp provided with 220 V alternating current power supply |
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| Publication Number | Publication Date |
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| CN103533693A true CN103533693A (en) | 2014-01-22 |
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| CN201310521031.7A Pending CN103533693A (en) | 2013-10-28 | 2013-10-28 | LED (light emitting diode) Indicating lamp provided with 220 V alternating current power supply |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202394745U (en) * | 2011-12-29 | 2012-08-22 | 魏传永 | Display device for working status of air switch |
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- 2013-10-28 CN CN201310521031.7A patent/CN103533693A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202394745U (en) * | 2011-12-29 | 2012-08-22 | 魏传永 | Display device for working status of air switch |
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Application publication date: 20140122 |