Highlight high-power LED lamp dynamic voltage between 3.2V-3.6V, but after testing found that the great difference of 3.2V driver with 3.6V power-driven, there is a standard power is a test 3.2 V voltage as a standard to test 3.6V and prevail? Online sales of high-power led light bar and LED lights, as if no details of single LED drive voltage, such as selling a flashlight, just say the power of the number of W, and there was no introduction is 3.2V for standard or 3.6V as the power of the test standard?
A 3W LED lamp, for example, 1A current voltage is 3V, this is also called 3W, but if the voltage is 3.6V then the current would only be a 0.83a, but if one is in 3V state current 1A LED lamp 5W price sale, you can increase the voltage to 3.6V or higher to achieve, so I let the discussion is this nominal power or current, or the key 3.2V voltage as a standard or 3.6V power supply shall prevail? For example, to the sale of Philips led lights Ordinance, a single LED lamp is a test voltage 3.2V, the whole power is 5W, but if a single LED voltage to 3.6V, then the it power more than 10W. Everyone understand what I mean by it? This LED is based on the curren t calculation in a single LED terminal voltage of 3.2V to 3.6V under current computing power? As another example, an ordinary incandescent lamp, for example, the nominal power is calculated in the standard 220V current, 15W bulb can not work in 240V current to calculate power to 20W light bulbs for sale right?
led light bar should also have a voltage value, such as the LED is usually a nominal 3.2V at 3.6V is the same but hot, it can operate at 3.6V to 3.6V under the current computing power, it seems this LED is still not a standard method of calculation.
Reference because of the particularity of led lights, the parameters of the manufacturers, individuals initially understood as the general high-power drive voltage range of 3.2V-3.6V, the current limit in the value of a parameter shall prevail, for example, in a 1W LED ligh ts, its general operating current is 320ma, 3W LED lamp operating current is 960ma. no specified operating voltage have to 3.2V standard or 3.6V as the standard.
Led light constant current board there are several models, but the board in addition to the current limiting resistor, the other exactly the same, only need to change the supply current can change the lamp power, the same LED fluorescent lamp of the same length power 15W-17W -19W-21W-25W, the only difference is the different power The power of different, simply use current limiting resistor is different.
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