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Comment Re:"It wasn't me, it was the one armed man!" (Score 1) 189

It's almost as if they could save money by pushing their shit out to a competent datacenter. I don't really see why BA, of all people, needs their own. Their shit could run on AWS just fine I'm sure. It's not magic. They deal with the same shit they dealt 5 decades ago when it ran on slow big iron.

Comment Re:BIG DC power systems are not really IT guys mor (Score 1) 189

The problem is really quite simple: corporate drones think that throwing tantrums at a problem will get it fixed. Tantrums include not only screaming at people, but also throwing money at a problem. There's this thing called human capital where most qualified people will naturally reward an employer's loyalty to them with their loyalty to the cause of the employer. Yet the corporate world is treating humans like replaceable cogs, and that's what they get: stuff that's held together by good wishes and chewing gum. Why? Because in such a work atmosphere, nothing better will ever flourish.

Comment Re:The problem is the sockets are ill-designed. (Score 1) 154

On any device that's properly designed, you'll have overvoltage protection (a crowbar) as well as overcurrent protection. When supplied with too high a voltage, the crowbar shorts, and the overcurrent protection opens. No fire, and the device is supposed to safely withstand such faults. The overvoltage protection is a necessary part of designing to withstand ESD, so it's not there merely to prevent people from doing stupid things and hurting themselves.

Comment Re:Story not exactly clear on details (Score 1) 154

Given that many USB devices are constant-power loads and thus have negative resistance, I'd be very leery of any sort of a constant-power supply (because that's what you talk of) that's designed for positive resistance loads. A constant-power supply that can deal with negative resistances is not something shown in application notes that people blindly copy from...

Comment Re: Story not exactly clear on details (Score 2) 154

Just to humor you, I have a variable frequency power supply and have plugged various Apple power supplies into it (magsafe bricks and USB supplies). They all seem to work fine and aren't any warmer than usual. I've done 400Hz 90V and 240V, to test on both extremes of the input voltage range. 90V is the worst case for rectifier heating from the average current, 240V is the worst case for rectifier heating form switching losses.

Comment Re: Story not exactly clear on details (Score 1) 154

You'd need big-ass selenium rectifier plates for this to matter. 400Hz will make the diodes run a bit hotter from switching losses, but I can't imagine any scenario where this would liberate so much heat as to cause a fire. More likely, the diodes would fail open and the device would stop working and that's that.

Comment Re: Not in Africa and all of Asia (Score 1) 1058

As a rule, I buy decent 6 year old used cars for $6-$7.5k total, including travel to the place where I pick up the car, and the return drive, and the state tax. We've got 5 cars over 16 years so far that way, and most middle class people wouldn't need anything more than that. $36k is like 5 cars...

Comment Re: Why not? (Score 1) 383

Multi-processing is only exploited when you design your system to exploit it. There was no wide-spread auto-parallelization of algorithms on these systems, at least not in the 80s. Certain database operations could be parallelized if you wanted to pay for it. The support on the application end was scant IIRC.

Decimal operations on modern ia32, ia64 and arm are implemented using 64-bit integers and not slow at all.

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