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 LED lights beads: 15 lights, 30 lights, 60 lights mean on LED light how many pieces LED components has on per meter length of LED lights. General a 1210 specifications, per meter has 60 LEDs, 5050 specifications lights, every m has 30 LED, for some special, there is 60 LED per meter. Take 3528, LED bulb 60 LED flexible strip light for example, electric power is 4.8W, and if customers choose to buy 100 meters, so the total power he needs is 4.8 * 100 = 480W. total power supply when selecting a power supply circuit to bear than about 20% higher, then select the total power 600W on the standard. This will effectively ensure the power to maximize service life. LED strip lights is with long life, but there must have the power supply to down the voltage, power supply quality directly affects the life of LED products, different LED products should match the appropriate projecteur extérieur led LED power supply. Different LED Flexible Strip needs different power distribution according to the model.LED soft strip light power has their different ways according to different classification criteria: according to the driving mode, it can be divided into two categories:1.1 regulator type (parallel connection)a. Brightness can be affected by a change in voltage rectifier;b. drive LED with the regulator driver circuits, each strip need to add the appropriate resistor so that each strip of LED display brightness is average;c. regulator circuit is not afraid of open load, but forbid completely short-circuited;d. When the regulator parameters of the circuit are determined, the output voltage is fixed, but the output current varies as the load increases or decreases; 1.2 constant flows (series connection)a. maximum current and voltage values should be noted that the use of , which limits the number of LED's use;b. constant current circuit driver LED is ideal, but the price is relatively high;c. constant load short circuit is not afraid, but forbid completely short-circuited;d. constant current driving circuit outputs is constant, while the output DC voltage will vary within a certain range with the different load resistance value, the load resistance is small, the output voltage is low, the greater the spot exterieur led load resistance, the output voltage is higher.Specific circuit selection determines the load size of the power supply, it decided the power supply. myledgrowupanty 141104