Quote:
Originally Posted by Christ
Don't resistors convert electricity into heat?
Isn't that kinda defeating the purpose of the electricity savings from using LED's anyway?
Not being smart here, I'm genuinely asking.
Obviously there is still an economic advantage in never having to change the bulbs again, but damn, it's only a very small amount you're saving, and that's if you changed them ALL on scheduled intervals.
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Yes resistors convert power into heat so that the resulting output is reduced.
How much power is consumed by resistors is dependent upon the layout of the circuit.
However LEDs are still MUCH more efficient at turning power used into usable light. That light output is also very controlled.
I'm currently working on replacing a 310 lumen incandescent bulb that consumes 18 watts with a 430 lumen high power LED that consumes only 8.5 watts (resistor included).
The more significant difference between the two is service life.