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Comment Re: DC power? (Score 1) 219 219

He "determined" that E-M waves in the air with earth as a ground plane travelled faster than light. He was very smart (eg, he had an awesomely intuitive understanding of resonance), but also a bit deluded.

Well, since he probably "determined" that before Einstein's General (or is it Special?) Theory of Relativity, he might be excused that faux pas.

And I would characterize him as "Brilliant", not just "Very Smart".

And yes, he had a few bats in his belfry; but that seems to often go with "Genius", ya know? It seems that, when a person has the ability to "see beyond" what people think of "reality", they don't just stop at one particular topic. But that peccadillo is certainly not unique to ol' St. Nikola.

Comment Re:Installed base of AC (Score 1) 219 219

>The only wide spread DC cabling standard is USB and that's mostly low power stuff. more like RV and yachting equipment, it all runs off DC.

Yeah, where anything over a couple of Amps requires a cable as thick as your little-finger. And with the price of Copper, that sounds like a giant step in the wrong direction.

And I doubt you'll find any marine or RV applications for HV DC, for some pretty obvious (and deadly) reasons. And once you get past the consumer-level of marine and "RV", generation and distribution goes back to AC pretty damned fast.

Comment Re:DC power? (Score 1) 219 219

To do this, the A/C converts the incoming wall power to DC and then back to variable frequency AC. Eliminating the initial AC to DC conversion here makes good sense.

Are you sure it's variable frequency AC, and not variable pulse-width AC? Or are they just using a Vector Drive to ultimately power a 3 phase AC motor?

So, in essence, you're building a big ol' SMPS (Switch Mode Power Supply), like in my Panasonic "Inverter" Microwave Oven. So Sharp is just eliminating the "DC Link" part of the SMPS/Motor Drive. Yawn. However, since that involves some fairly stout rectifier diodes and monster capacitors (that eventually wear out from the ripple currents), maybe it's not so dumb afterall.

Comment Re: DC power? (Score 1) 219 219

His main interest was in using high frequency for wireless power transmission. His lack of E-M understanding caused him to waste a lot of his talent pursuing a failing approach.

Oh, I think Tesla understood Electromagnetic principles a bit better than most...

Comment Re:DC power? (Score 1) 219 219

High Voltage DC transmission makes sense in some applications. Its best as a single point to point solution over a fairly long distance, as line losses are minimized. High voltage DC switching and DC to AC conversion equipment is very expensive compared to AC, and typically has a shorter lifecycle, so you don't really want to have a lot of DC switchyards.

How are line losses minimized for DC over AC, given the same "RMS" voltage (yes, I know the term means nothing in DC) and Current?

It seems to me that the only application of HV DC would be to stack up a bunch of PV panels in Series, and then buss the result together before sending it to a HV-input Inverter.

But, unless the EPA revised the laws of physics, it seems like AC transmission will pretty much always "win" over DC, especially over distance.

Or is it because maybe HV DC has less coronal discharge loss over AC?

Comment Re:What benefit to announcing it? (Score 1) 202 202

Oh, no one knows either way about Android M support right now. I've seen lots of speculation and people talking about device strings but none of it seems concrete to me. I just meant that so far my Nexus 4 is on the same version of Android as my Nexus 6, and with some luck it will continue to be supported through M. (It's already long past Google's 18-month or so support window)

Whoa, Nelly!!!!

So, even the vaunted support for the Nexus brand is only "Guaranteed" for a year and a half?!?

FFS, Apple is still supporting (even up through the current version, iOS 9) my iPad 2, which was first sold on March 11, 2011, over FOUR years ago (a millenia in mobile-device-years). Apple has even released versions of iOS specifically targeted at improving performance on the iPad 2.

Similarly, Apple also still supports (even up through the current version, iOS 9) my iPhone 4s, which was released on October 4, 2013, the day before Jobs' death. In fact, I often thought that the real, "secret" reason behind the model name "4s" was "for Steve", "3GS", etc. notwithstanding.

And I believe there was even a relatively-recent "Security Update" for the iPhone 3GS, which was introduced on June 8, 2009. Support ended for the 3GS on or around September 12, 2012.

As far as standalone Security Updates, in May, 2011, Apple patched versions of iOS back to iOS 3.0 with their iOS Update 5. Quite frankly, I don't understand that Security Update, especially considering there is an Apple document dated April, 2015 that talks about it.

Comment Re:Windows 10 Sucks (Score 0) 312 312

Unless systemd is implemented in a really retardo way (which it may very well be), I don't see the big deal, other than "Change Bad!"

Uh, systemd comes from the same guy who gave us Pulseaudio. How many years did that take to become usable?

And, unlike pulseaudio, you can't just uninstall systemd and run your operating system without it.

All the more reason to migrate to the more mature systemd from Apple.

Get to it! Be the hero that saved Linux from teh evils systemd!

Comment Re:Windows 10 sucks (Score 1) 312 312

I was thinking he was the poor sucker with a first generation iMac where the USB wasn't even 2.0. (and where the firmware is set so that it CANNOT boot from an external USB DVD-ROM drive)

Put some Firewire in that Altivec Unit and let's Retina our way to joyland!

Excuse me, but when the first gen iMac debuted in 1998 (nevermind when it was designed, likely in 1997) there simply wasn't a USB 2.0. It wasn't even released as a spec until TWO YEARS LATER.

BTW, the first versions of Windows to support USB 2.0 are Windows 2000 (in SP4) (June, 2003), and Windows XP. The earliest of those would be Windows XP (very limited support until SP1 was released in September, 2002). There is no official USB 2.0 Support in ANY "Win9x" variant.

As for Macs, the first desktop Mac to support USB 2.0 was the iMac G4 1.0GHz (Sunflower design), introduced on September 8, 2003; and the first Mac Laptop to incorporate USB 2.0 appears to be the PowerBook G4 1.0 12 inch DVI model, Released essentially at the same time, on September 16, 2003. This means that USB 2.0 Support was added to OS X 10.3 (Panther), Released on October 24, 2003.

As for Linux, LIMITED"Experimental" USB 2.0 support for SOME USB hardware was available in the 2.4.16 Kernel (don't know the exact release date); but full USB 2.0 support was added to the 2.6.0 Kernel, released on December 17, 2003.

So, from what I can see, USB 2.0 support came at virtually the same time for OS X, Windows and Linux-based PCs.

Got it? As for the rest of your nonsensical post: Grow up.

Comment Re:Don't affect me (Score 2) 312 312

So.. You see a /. article about a subject that doesn't affect you, follow the article link, hit the post button, and then respond to someone (which kinda implies you're watching the thread).

Okay, this doesn't affect you. Right. Of course. Mm-hm.

Sad little boy.

Not to defend an AC; but, if Slashdot commenters restricted themselves to only issues which affect them, this would be one lonely forum.

IBM Advanced Systems Group -- a bunch of mindless jerks, who'll be first against the wall when the revolution comes... -- with regrets to D. Adams

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