Design, advantages and disadvantages of high power LED lighting

Last year, the “ten cities and ten thousand lamps” demonstration project did not bring fruitful results as expected. On the contrary, the shortcomings of this high-power LED lighting were fully exposed: the reliability of LED driving power supply was extremely poor, the heating was high, and many LED driving power supplies were burned out, many […]

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Skills and specifications for PCB design of driving power supply

In any power supply design, the physical design of PCB board is the last link. Its design method determines electromagnetic interference and power supply stability. Let’s analyze these links in detail: 1、 From schematic diagram to PCB design process, establish component parameters – input principle net list – design parameter setting – Manual layout – […]

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Analysis of several common LED driving modes

LED is a characteristic sensitive semiconductor device and has negative temperature characteristics. Therefore, it needs to be in a stable working state and protected in the application process, resulting in the concept of driving. LED devices have strict requirements for driving power supply. Unlike ordinary incandescent bulbs, LED can be directly connected to 220V AC […]

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Five key points in the design of LED driving power supply

1、 LED current size The size of LED current directly affects the service life. It is recommended to reduce the rating for use, so try to control it as small as possible, especially if the LED heat dissipation effect is not good, the LED must leave enough margin. 2、 Chip heating This is mainly for […]

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Design of practical driving power circuit for high power LED

High power LED has higher luminous efficiency and service life than fluorescent lamp. People should add another radiator according to the actual use mode. At present, the retail price of domestic 3W white LED is 15 yuan, but it is not suitable for use temporarily because the quality of 3W high-power LED is not reliable […]

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How to solve the damage problem of LED driving power supply

What is led driving power supply LED driving power is a voltage converter that converts the power supply into specific voltage and current to drive LED light. In general, the input of LED driving power includes high voltage power frequency AC (i.e. commercial power), low voltage DC, high voltage DC, low voltage high frequency AC […]

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How to get the RMS of LED driving power supply

As we all know, the quality of LED lighting products depends on two aspects: one is led chip light source; the other is led drive power supply. At present, it is mainly a few international well-known companies that can provide high-quality and qualified LED chips, such as Philips, OSRAM and Cree. Generally speaking, there are […]

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