LED lamp constant current driver
A constant current driver, LED lamp technology, applied in the direction of lamp circuit layout, lighting devices, light sources, etc., can solve the problems of lack of power supply, imperfection, safety and short service life, etc., and achieve simple drive circuit, scientific design, and reliability strong effect
Inactive Publication Date: 2014-02-26
广西玖典电子新材料有限公司
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Problems solved by technology
[0002] LED wall washer is also called linear LED flood light, etc. Because of its long strip shape, some people call it LED line light, which is mainly used for architectural decoration lighting, and is also used to outline large buildings. Outline, the traditional existing technology is configured with a single power supply, the manufacturing process is relatively troublesome, and the use is damaged and difficult to repair
Therefore, the workload of maintenance personnel is increased. At present, there are many types of similar LED lamps in the market, and the prices are relatively expensive. The safety of the product and the short service life of the product are not handled well, and they cannot fully match the life of the light-emitting diode. Lack of a long-life power supply, etc.
Method used
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[0009] Such as figure 1 Shown: CE1 is a step-down capacitor, D1, D2, D3, D4 are bridge rectifier diodes, CRD constant current diodes, LED lights LEDO, LEDX, R1, R2 resistors.
[0010] The LED lamp constant current driver of the present invention comprises a housing, an LED lamp, and a drive circuit, and is characterized in that: the output DC voltage of 220V is bridge-type rectified, and its drive circuit uses a constant current resistor R1, a CRD constant current diode, CE1 is a step-down capacitor, which constitutes a resistance-capacitance step-down circuit, which is controlled by the resistance-capacitance voltage drop to cope with low-voltage output occasions.
[0011] How the circuit works
[0012] An ideal constant current source is a device with infinite internal resistance, no matter what the voltage across it is, the current flowing through it will never change. Of course such a device is impossible to exist. The actual constant current diode is equivalent to a ce...
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The invention discloses an LED lamp constant current driver which comprises a casing, an LED lamp and a driving circuit. The LED lamp constant current driver is characterized in that 220V is subjected to bridge rectification and then DC voltage is outputted, according to the driving circuit, a constant current resistor R1 and a CRD constant current diode are used, a CE1 is a step-down capacitor, a resistance capacitance step-down circuit is formed, the controlling is carried out through resistance capacitance step-down, the LED lamp constant current driver is corresponding to an output occasion of low voltage, and the LED lamp constant current driver has the advantages of scientific and reasonable design, simple driving circuit, less components, high reliability, and low cost.
Description
technical field [0001] The invention belongs to a decorative lighting lamp, and relates to a high-power LED light source energy-saving lamp. Background technique [0002] LED wall washer is also called linear LED flood light, etc. Because of its long strip shape, some people call it LED line light, which is mainly used for architectural decoration lighting, and is also used to outline large buildings. Outline, the traditional prior art all configures a single power supply, the manufacturing process is relatively cumbersome, and the use is damaged and difficult to repair. Therefore, the workload of maintenance personnel is increased. At present, there are many types of similar LED lamps in the market, and the prices are relatively expensive. The safety of the product and the short service life of the product are not handled well, and they cannot fully match the life of the light-emitting diode. Insufficiency such as lacking a kind of power supply with long service life. Co...
Claims
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Inventor 覃如意
Owner 广西玖典电子新材料有限公司