What are the ways to improve the efficiency of led fluorescent lighting?
There are mainly the following aspects to consider
1. Lamp beads are very important. Only use good and cost-effective lamp beads.
2. Heat dissipation, handle heat dissipation well, heat dissipation affects the life of the lamp beads
3. Power supply, good power supply, high efficiency, long service life and durable
4. The light transmittance of the PC cover should not only transmit light well, but also be beautiful, can not see the lamp beads, etc.
It is necessary to continuously explore and improve in practice.
1 The power supply must be constant current: The characteristics of LED semiconductors determine that it is greatly affected by the environment. For example, as the temperature changes, the current of the LED increases, and the increase of the voltage, the current of the LED will also increase. Long-term operation exceeding the rated current will greatly shorten the service life of the LED. And LED constant current is to ensure that its operating current remains unchanged when environmental factors such as temperature and voltage change.
2 The matching of LED fluorescent lamp power supply and lamp board: some customers design the lamp board first, and then find the power supply, and found that it is difficult to have a suitable power supply, either the current is too large, the voltage is too small (such as I>350mA, V<40V); or current If it is too small, the voltage is too high (such as I<40mA, V>180V), resulting in serious heating, low efficiency, or insufficient input voltage range. In fact, choose the most excellent series-parallel connection method, the voltage and current applied to each LED are the same, but the power supply effect can exert the best performance. The best way is to communicate with the power supply manufacturer first, and tailor it.
3 LED working current: The rated working current of the general LED is 20 mA. Some factories use up to 20 mA at the beginning. In fact, the working current under this current is very serious. After many comparison tests, it is designed to be 16 -18 mA is ideal. Total current of N parallel connections = 17 * N
