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Newly Enlightened
I just replaced my 60 watt living room ceiling incandescents with 60 watt equivalent Phillips LEDs. Even thought the lumen output of the LEDs is lower than the incandescents they seem brighter. Any thoughts on why?
that depenps on the lumens ,incandescent light effect in 10-15LM/W,if Philips 60w led bulb have 850lumens ,in fact this bulb is more than an 60w incandescents bulb .I just replaced my 60 watt living room ceiling incandescents with 60 watt equivalent Phillips LEDs. Even thought the lumen output of the LEDs is lower than the incandescents they seem brighter. Any thoughts on why?
Perhaps also, warmer light may seem like less lumens than a neutral of same lumens. At least, in a low lux situation. Scotopic/photopic, blah, blah, blah. Feel free to correct me if you think I am wrong, anyone.
This is not really true. Of course, LED is more efficient at producing light, so a 15 watt LED is going to be very much brighter than a 15 watt incandescent, but there is no clear absolute equivalence between LED light and incandescent light. LED light is much more directional, and the spectrum of wavelengths emitted is not the same either. So you take an LED that is claimed to be "equivalent" to a certain wattage, it may be "brighter" in some ways, not as bright in other situations.Why do LEDs seem brighter than the same size incandescent?
However, if you have a dimmer on the circuit, the most likely reason is the dimmer, even on max setting is lowering the output of the incandescents while the LED bulbs will put out maximum power at the max setting of the dimmer, even ones designed to reduce power by 15%.
Semiman
That depends on the dimmer in use. Many dimmers have a "bypass" of sorts that mechanically connects the "hot" lead past the dimming circuit which allows 100% unmodulated AC to the load.
Test with a VOM and check pre and post dimmer voltage, and drop will indicate that there is no bypass feature on said dimmer.