标签：RGB LED

high lumen rgb led

The visible light emitting diode (LED) to both high efficiency and long life characteristics. Currently, a wide range of their applications. Manufacturers have in-depth study of the LED devices have been developed with higher luminous flux, longer life, more colors and more lumens per watt of new devices. Accurate and cost-effective testing is essential to ensure the reliability and quality of the device high lumen rgb led.

high lumen rgb led

LED test with a different type of test sequences in various stages of production, such as the design and development phase of the test, wafer-level testing of the production process, and packaged final test. LED Tube Light test generally contains electrical and optical measurements, this paper focuses on the electrical characteristics of the analysis, the only part of the optical measurement techniques introduced in the appropriate position. Figure 1 shows a typical diode electrical I-V curve. The complete test should contain a large number of voltage values ​​corresponding to the current operating point, but under normal circumstances, a limited number of sample points sufficient to test the quality factor of the device.

 

Figure 1. Typical LED DC I-V curve and test point

Many tests required to provide a known current and measuring voltage, while some tests need to provide the voltage and then measuring the resulting current. Therefore, the high-speed test instrument with an integrated, synchronized source and measurement functions such testing is ideal rgb led.

Forward voltage testing

Forward voltage (VF) test test the LED test sequences, visible LED forward voltage. When the load a forward current in the diode, it begins conduction. Beginning at low current, the voltage drop on the diode rising rapidly, but as the driving current increases, the voltage slope begins to flatten. Diode generally work in a relatively constant voltage region. Diode tested under these working conditions is also very useful. The VF testing need to provide a known current and then measuring the resulting voltage drop in the diode. Typical test currents ranging from several tens mA to a few amps, while the size of the voltage generated is usually in the range of a few volts. Some manufacturers use the results of this test sorting devices, because of the color of the forward voltage of the LED related products (by color or complementary color wavelength and its purity common characterization of color qualityrgb led).

 

spotlight led flashlight and RGB LED

Do you believe, the color is actually a living: they have the Smart, can make all kinds of space, color affect our mood. However, in most people’s living space, pale or warm light, we are generally accustomed to. The new LED lights change color, that is, LED lamps with dimming, color mechanisms can produce the effect of altered space atmosphere.

spotlight led flashlight and RGB LED

LED lights change color by the capacitor step-down power supply, LED controller and G and R, B tricolor LED array. Its shape and milky white incandescent bulbs, but after the light change color automatically at a certain time interval. Back to the enclosure to issue green, yellow, green, purple, blue, red, white light. When the lights change color of the color was originally the three primary colors LED lights up two LEDs, which can issue a yellow, purple, blue (such as red, blue LED light issued by the purple light); if red, green and blue LED At the same time, when lit, it will produce white light. If the circuit can make the red, green, blue LED lights, a separate light and three-color LED is lit at the same time, issued in seven different colors of light. Outer bulb must be milky white. In order to better blending, non-transparent materials.

LED lights change color for the family birthday party, holiday parties, festive New Year to add a festive atmosphere to the festival: it can also be used for entertainment and advertising lamp, etc.. For example, blue light halo off the 6:00 in the morning, fresh and soft, warm yellow, cute pink, light green, applied to the comfortable scene. Romantic lilac people to think of wonderful memories, home or commercial space in accordance with need to match the color of the atmosphere, you do not need to change the interior decoration or lighting.

However, these lamps have a troublesome shortcomings is to control the color change of the circuit of the cost is high, the life of the drive circuit will be a problem, the industry, there are many kinds of solutions to cope with the expected in 2009 class of applications will be more and more, LED mood lighting market take-off of state in 2010.