Buy LED fluorescent tubes to see which parameters
LED fluorescent tube parameters include: LED, total light flux, color temperature, color index, total harmonic distortion, average life, protection grade - etc. As a user of the outside line, it is impossible to know and can not judge its parameters true and false. The only thing you can refer to when you buy a brand is that it is less likely to be fooled.
Power efficiency, power factor Output power (the voltage * output current of the output LED)/the input power. This parameter is especially important if the low efficiency means that a large portion of the input power is converted into heat. If it is installed inside the tubes will generate a very high temperature, and the led chip will generate heat, and would have a higher temperature, the superposition of all electronic parts within our power supply will increase with increasing temperature and shorten the service life. So the efficiency of power supply are decided life the most fundamental factor, efficiency is not too low, otherwise consume too much heat on the power supply. Power factor on the value, the power factor is the ratio of active power and apparent power, namely the cosine Φ = P/s. low power factor, can produce a large amount of reactive power, power efficiency and will also cause disturbance to the grid, it will be high to the requirement of engineering and the factory! General requirement efficiency is above 80, power factor is above 0.8. Brightness, longevity The current led lighting tube is 90-100lm/watt, and the life span is more than 20,000 hours, and the chips and power supply should be paid attention to. We adopt a 3-ampere, long power supply to ensure the quality of the lamp.
Input voltage You can see some wide input voltage is the voltage of the tubes, is commonly - 265 v / 85 v AC, when the power supply voltage fluctuation in large will play his role, will not affect the brightness as the voltage fluctuation Isolated source and non-isolated source The safety of the isolated source is high and the price is relatively high. Though not isolated power supply security than isolated power supply, completes the safety measures, price is very high, especially in terms of efficiency and power factor, advantages are more obvious. Resistance capacitors and high voltage IC power sources are cheap, but they produce stroboscopic and low security.
Led fluorescent bulbs are recognized and accepted for their health and energy efficiency. But, as a ordinary consumers or less of the professionals in the choose and buy leds, there may be some doubts - what a lamp is better, is suitable for use in yourself! As a professional manufacturer of led fluorescent lighting, hill photoelectric has some Suggestions for reference only. Constant current, no flash Led voltage is determined by the chip itself, and the resistance is in with the rising of temperature change, if not using constant current power supply, Led the current will increase, more than rated current job for a long time, can greatly shorten the service life of the Led. An LED constant is a constant flow of temperature and voltage, ensuring that the current is constant. And constant current, can let lamps and lanterns not stroboscopic.
