A transformer with 10 led to shoot the light, to buy what kind of transformer?
10 leds in parallel, so that the voltage is not high, is 9.6 to 10.2 V, but the current is 300 ma * 10 = 3 a, and every all the way to 300 ma of constant current source, or with a current limiting resistor, such low efficiency. Power is the same, it is recommended to use 12 v3a to 4 a constant voltage source. 1 break, don't affect other lights.
and multiple series, you can according to the above design. The total power is constant, the efficiency in the middle. Hope to have some help to you.
10 only 3 w LED series, high efficiency, but high output voltage, 9.6 V * 10 = 96 V, filter capacitance pressure is high also, only 1 circuit, all is not lit up. Current 300 ma, power = 96 v to 102 v * 300 ma = 28.8 to 30.6 W, considering the power reserve, it is recommended to use 40 W constant current source.
