@NETscape -- no need -- 115V and 120V transformers are really the same darn thing

yummy, grey dried goo coming out of a box cap...

@PlasmaHH I think that's what they make oatmeal from in chain restaurant.

+s

ah, time to sell some toxic waste. again.

:-)

Hi all

I'm trying to understand how brushless motors work. Can't find a clearcut question explaining it though

I just saw some cordless drills advertising higher torque and longer battery life with brushless motors

and was wondering why that would help

why higher torque and longer battery life helps? well, who needs those, I throw away each drill after use anyways

@Zaid Short answer: Because with a BLDC motor you control the rotation in steps and spin-up and immediate stop are much more controlled. In a normal motor you need to push in a load of energy up front to get it going and when you stop it you take a mountain of energy out of it that's wasted. BLDCs are, in a sense, much more reactive in real-time to the power supplied.

No time for the long answer, as I'm going to get myself professionally injected with medical grade narcotics before they start video taping me from the inside

another thing that no one wants on youtube

:-)

@Asmyldof I was just about to hit the 'Post your Question' button

And now I have

Hopefully a good one will come in. I have banned myself from Stack till well after dinner.

Byes

Man, you folks are tough on newcomers :) Two downvotes because it didn't occur to me to visit Wikipedia?

@Zaid hover with your mouse over the downvote button and read teh text

emergency rooms are so annoying...

well, actually not the rooms, but the people in there...

Is it paranoid and spinning my wheels to run a CRC on a dataset after already verifying the dataset byte for byte with a copy of itself?

with the thought perhaps the byte for byte verification is somehow corrupted and a CRC will be a 2nd line of defense

@PlasmaHH are you in a big city?

@Shalvenay thanks for your input

@NETscape big, small, that probably depends on your definition

the avatar... right in the ocd, man ... do n't morally weasel out of this! it 's not so bad!

evil laughter

so what was the reason again no one here gave me a realtime spectrum analyzer for my birthday for free?

Folks, this chart of LED efficiency vs. wavelength is from 1999 (source). Is anyone aware of a fresher chart? What would a chart like that look like today?

The reason I'm asking is that I need to make yellowish or reddish light with a tight power budget. So, I'm trying to find the wavelength that would be inherently more efficient.