Delipo Optoelectronics launches stroboscopic LED tube lamp driver power supply

Traditional fluorescent lamps have stroboscopic phenomena due to the working frequency. It is more irritating to the eyes. As a new generation of energy-saving and environment-friendly lamps, LED lamps have significantly improved the range and strength of traditional lamps, especially the large use of LED bulbs and LED fluorescent lamps will push health lighting to a new height.

Figure 1: Product Features

As a measure of modern civilization, many people spend more than eight hours a day working in the light. In the choice of luminaires, comfortable lighting space plays a crucial role in improving work efficiency. From the current technical point of view, isolated drive technology that combines high efficiency and high PF value is common, but it is very difficult to achieve "no stroboscopic, high efficiency and high PF value". Because the traditional IC built-in PFC correction circuit is difficult to achieve "no stroboscopic" lighting requirements, and through the peripheral PFC compensation circuit (filling valley circuit), although it is possible to solve the "strobe" problem, but the PF value and efficiency will be greatly reduced , thereby increasing the interference to the power grid and reducing the stability of the luminaire.

Delip Optoelectronics is the first in the industry to develop "LED fluorescent lamp without stroboscopic, high efficiency, high PF value drive control technology" and has been mass-produced, LED lamps equipped with this drive technology truly reflects the trend of healthy lighting life. In the fierce market competition, various LED lighting manufacturers are constantly seeking new breakthroughs. Delipo Optoelectronics recently introduced a new built-in stroboscopic LED tube lamp driver power supply product - the new DALI-WPS25W, with "no stroboscopic, high efficiency, high PF value drive control technology" as the core, with a simple Peripheral circuits provide extraordinary illumination for LED fluorescent tubes.

one. Product work has texture

When we match LED lamps, we often find it difficult to choose the right product or the price is very sensitive, and sometimes even the matching goods can not meet the customer's requirements. But more often we ignore the value of the quality of the power supply itself.

Figure 2: Product Process Design and Packaging

How to judge its pros and cons? Is the line of the copper foil of the circuit board regular in the selection of power components and materials? The width of the high pressure part should be more than 1 mm. Inductive components should be covered with insulating glue; preferably the circuit board is also covered with three anti-paint. The electrolytic capacitors are placed neatly, without wrinkles and without leakage. The components are evenly distributed on the board and the plug-ins are neat. The three-stage tube and IC are clearly marked. Use UL1007, AWG24 or better wire for the leads. A high-quality LED driver power supply, in addition to the details of the processing in place and regular, but also have a calm texture in the hand? Delip's new strobe-free LED tube driver uses Taiwan's A-class PCB material, and the 1.2-ounce copper foil wiring meets the requirements of climbing and heat-dissipating processes. The neat workmanship and materials feel more solid, whether you understand the power line design, you will feel at ease.

two. Product application is guaranteed
Determining the quality of a power supply requires a highly efficient and stable integrated circuit in addition to good design and materials. With the traditional structure of the LED driving power supply, some structures in the circuit design are too complicated, resulting in large heat generation, poor dynamic performance, difficult circuit control, and low conversion efficiency. Delipu photoelectric strobe-free LED tube driver DALI-WPS25W series simple circuit component architecture can maximize power density utilization, minimize the number of components required for LED driver circuit under the condition of ensuring certification, possible hidden dangers The point is also minimized, which greatly improves the electrical performance and the efficacy of the LED luminaire.

        

Figure 3: Product thermal imaging (measured at room temperature)

A suitable quality product requires some basic test items, such as current value, and power factor is the basic test. Test for at least 30 minutes to see if there is any change. Oscilloscope monitoring can see clutter and glitch conditions. During electrical measurement, there is no drop in electrical power for 30 minutes in a fully enclosed LED tube. In addition to this, a voltage withstand test is required. In the test at a temperature of 62 ° C, the temperature rise in the aging oven after 8 hours was 20 ° C, which resulted in high conversion efficiency. Delip has no "LED fluorescent lamp without stroboscopic, high efficiency, high PF value drive control technology" in the load output is DC40V 450mA constant current output power, the efficiency is 85%-87%, which is in the traditional unipolar PFC circuit design It is difficult to achieve, and Delphi's strobe-free circuit design greatly simplifies the architecture while ensuring ultra-high conversion efficiency.

Figure 4: Temperature rise of important components (62C ° oven aging)

Education Projector

Educational projectors are mainly aimed at classroom teaching by school teachers; traditional projectors are not easy to carry. Due to the naughty students in school classrooms, projectors are not safe to place in classrooms and are easily damaged by students. The portability of educational micro-projectors makes up for teaching Vacancy, it is convenient for teachers to give lectures and only need to store the materials in the projector and show them to students for teaching, saving the trouble of textbooks and handwriting with pens and chalks. Its general weight will not exceed 0.2Kg, and some do not even need fan cooling or ultra-small silent fan cooling.

Educational projectors need to have:

1. Clear handwriting Educational projectors most often display text and images, at least a resolution of 1024*768 or more, and a contrast ratio of more than 3000 lumens, so that students in the back row can see the projection clearly

2. Short-focus large screen;

3. Accurate color;

4. Easy operation;

5. Features such as multiple connection methods.

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