I recently learned about the Philips 4w 800 lumen lightbulbs available now and bought some for my house, absolutely amazing how bright they are for 4w!! I want to build a few things that use a similar amount of LEDs and are powered from an 18v lithium battery.
Are there LED filaments available for me to buy that will match the same 200 lumens/watt? Or some other type of LED emitters or COBs? I know similar LED filaments are available, but they are more like 100 lumens/watt from random chinese sellers. I've also seen some TCP LED retrofit metal halide bulbs that use COBs and claim 200 lumens/watt.
In theory if Philips is telling the truth their actual LEDs must be more efficient than that because they have to make up for losses in the power supply.
Would it be easier to just smash open a Philips bulb? There are 8 of them that appear to be wired in parallel. I have no idea what voltage/current they are driven at...
Are there LED filaments available for me to buy that will match the same 200 lumens/watt? Or some other type of LED emitters or COBs? I know similar LED filaments are available, but they are more like 100 lumens/watt from random chinese sellers. I've also seen some TCP LED retrofit metal halide bulbs that use COBs and claim 200 lumens/watt.
In theory if Philips is telling the truth their actual LEDs must be more efficient than that because they have to make up for losses in the power supply.
Would it be easier to just smash open a Philips bulb? There are 8 of them that appear to be wired in parallel. I have no idea what voltage/current they are driven at...