Light bulbs.

It took some getting used to but i like whote led lights or incandescent bulbs with natural white light. It is not till you ise those that you notice how yellow a lot of bulbs we grew up with are.

Over the last five years every time a bulb burns out i replace it with a led. I have yet to replace a led.

I had to replace a LED bulb today . Turned the light on , stayed on for about 15mins and it went out . It was like that for the past few days . Checked out all of the wiring and it was OK . Changed to a new bulb . Problem solved .
 
To my fellow engineers, do you remember ELI and ICE? How about Z and j? Glad I don't have to do that math anymore.

See: http://ceolas.net/Docs/Sylvania_on_CFL_Power_Factor.pdf

Yes, I remember ELI the ICE man. Yes, I am glad I don't have to do the math anymore, but I still have the nightmares. I note, however, a glaring error in the Sylvania reference you gave provided. It says the consumer only pays for real power and not the VARS. Incorrect. Every person and business that pays an electricity bill pays for both the real power and the VARS. Generators gotta be paid to be off unity power factor and transmitters gotta be paid to install and operate capacitors and reactors.
 
buzzing
Yes, I have several 3-way LED bulbs that buzz. All are Philips bulbs. All the ones that I have problems with dimmers are also Philips. I guess I should stop buying Philips bulbs.

I have found Cree LED bulbs to be very good. No buzz, dimmable, and for indoor use I have found their "soft white" bulbs produce colour very similar to incandescents. However, they are by no means the cheapest on the market.