Man, you're full of shit. Every LED light I've owned has gone well over that.

"Even high CRI (color rendering index) LED lighting has a nasty spike in the blue region."

Would you like to know why?

Because that blue led is now so damned efficient and the remote phosphor tech doubly so.

Going by input power/output power, the blue LED is almost 65%-70% efficient. It would have to be to get Cree's current 5150K LED at 300+ lumens per watt.

"However, despite their luminous outputs having increased steadily over that time, they still fall behind more conventional forms of lighting in terms of brightness."

Bullshit. We're pumping 300+ lumens per watt, 5150K, 350mA drive current, 85C operating temperature.

There's not one goddamned thing on this planet that can touch an LED, now. The sun only hits ~93 lumens per watt, once you get all the really complicated math down.

" Do you know anything about semiconductors (and tubes)?"

I'm probably one of few people on this planet that can run LEDs off raw wall power with zero controlling power circuitry.

I also happen to fabricate my own PN junctions just for fun. Expensive chemicals, though.

That's a surprise to me that there are that many, but not entirely. As we get more solar and wind, HVDC will probably become the choice for transmission, it only makes sense. Market penetration of such, however, is still fairly low.

"For instance, the line drops on a two meter cable run of DC or AC are going to be the same."

You don't know what you're talking about.

http://tinypic.com/player.php?...

See that nice long run of LED on the bottom row near the end of the video, the one with more red output?

That's 24VDC.

Two meters down, meter shows a drop from 24VDC to 18VDC. From there, the LED units began getting very, very fucking hot as resistance in the conductor increases.

https://www.youtube.com/watch?...

See that? I built that. Along with the other building in the video above. From design to electrical, every bit of that is my work.

You have zero fucking clue what you're talking about, sir.

My average wall dimmer is a rheostat, not a thyristor.

And I bet you wonder why you have a lonely life. Because if you can't trust any group or associations of more than one person, you're obviously not going to parties, events, or anything like that.

And I'll bet 20:1 your warehouse was old as shit with un-upgraded power boxes and lines.

200V cap? You want minimum 250V for a 120V line.

"LED is DC, and it needs regulated DC."

Try again.

And again.

Come back when you actually design these things for a living, eh?

The spiral CFL was invented in 1976. In 1980, Philips introduced its model SL. That's right next to 25 years (and jives with the statement 'approaching 25 years old.')

"Because I find it hard to believe in 3 months the extra few dollars/bulb is offset in energy savings."

Welcome to California, where we pay more for power than just about anywhere else in the USA. And it's not even a flat rate per kWh.

Yea, I do that every single day, as I grab the RAW EXPOSED PANEL AND HEAT SINK from off the top of my aquarium. And that's a 100w LED panel.

You're not using SMD high-power LEDs.

I've got 100w LED in a 30mmx30mm package. Guess what? It gets hot enough to fry an egg in about 5 seconds without a heat sink.