1, LED street light driver why should it be constant? T […]
1, LED street light driver why should it be constant? The characteristics of LED lighting materials dictate that they are subject to environmental influences, such as temperature changes, increased LED current, increased voltage, and increased LED current. Prolonged operation beyond the rated current will greatly shorten the life of the LED lamp. The LED constant current ensures that the operating current value remains constant when environmental factors such as temperature and voltage change.
2, LED street light power supply working voltage General LED recommended working voltage is 3.0-3.5V, after testing, most work in 3.2V, so according to 3.2V calculation is more reasonable. N lamp beads in series with total voltage = 3.2 * N.
3, LED street light operating current is the most suitable how much, For example, LED is rated at 350 mA, while some factories used to do, designed for 350 mA this work under the current heat is very serious, after several comparison tests, designed for 320 mA is ideal to try to reduce heat so that more energy is converted into visible light.
4, wide voltage LED street lamp driver To make an LED street lamp power supply in a wide range of AC85-265V input voltage range, then the lamp board LED series parallel way is very important. As far as possible, do not apply wide voltage, can be divided into AC220V, AC110V as far as possible to ensure the reliability of power supply.
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