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Question:

Homemade LED advertising lights, cement resistance heating obvious, how to do?

Homemade LED advertising lights, cement resistors and carbon film resistors, fever is obvious, what should I do? The fixed hot melt adhesive has been turned on. The panel is made of acrylic board. Will there be any hidden dangers? All LED lights work properly!

Answer:

Heat resistance of aluminum with obvious things like sticking to them as a heat sink, but this is not the best solution, your LED must have parallel components, because the LED current advertising lamp is very small, the single power is about 0.05W, should be used in all series, this small current, resistance consumption power is small, if not change, for resistance and heat sink, and persistent fever is not a good thing, because the skin is wire PVC, melting combustion.
High power supply voltage, or small resistance, reduce voltage or increase resistance
Ultra simple, more successful, or more than one series in place of the fever. Suppose you are 300 euro 1W, you use three 100 euro 1W, sure.

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