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November 21, 2015
Tutorial - LED Current Limiting Resistors
about 6 years ago
I have a LED rated at 50W @ 85V-265v AC
I wanted to use a series resistor (56 Ohms) to create enough 12V to run a fan.
The LED is OK but the resistor burns out (!?) P = (0.2)sq X 56 = 2.24W (!?)
It should only be carrying 200mA (250V X 0.2 = 50W) and 12V = 0.2 X 56 Ohms
Is something happening in the reverse direction?
No public wish lists :(