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Comment Re:Just moves a choke point (Score 1) 395

You wouldn't need the big 16 pump Costco gas stations in anywhere near the vast numbers they exist now.

My car spends over 23 hours a day stopped. So do the vast majority of other cars, mine is hardly unique. For 99.9% of driving,.slow charging at home or in an office or mall parking space is entirely adequate. If I owned a Tesla model S, there is exactly one occasion in the last year I would have needed a supercharger station en-route. This would mean an enormous reduction in the number of "gas station like" charge stations required.

The biggest deal though is not the charge rate of this battery but its lifetime. 10,000 charge cycles is much MUCH better than what we have now and will reduce the cost of ownership considerably and may open up new applications that are not automotive, for example - storage of renewable energy when there's too much sun or wind, since the longevity of the battery (and also the charge rate implies a very low internal resistance, in other words, efficiency) starts making this kind of thing practical.

Comment Re:I call bullshit (Score 1) 395

You don't need such extremes for a small battery, having a 5Ah battery charge in 20 minutes would be awesome and need a much smaller supply. More importantly is the very high number of charge cycles (and the low internal resistance of the battery that this very fast charging would imply) rather than always needing to charge the battery at a high rate.

As for charging a car, the charging stations would need to probably be automatic and high voltage. But rapid charging will be a rarity, something most people need to do only a couple of times a year. What is more important about this battery technology is the high number of charging cycles the battery can manage, not its charging speed. The longer lifetime of the battery hugely reduces waste and cuts cost, the low internal resistance of the battery reduces power wasted during charging. Even given battery recyclability, it's better to have a battery that can be in service for a couple of decades and not need recycling in all that time, than having to go through half a dozen packs in that time.

Most vehicles spend most of the day parked. My own car spends over 23 hours a day just parked, given that and low current charging stations in parking spots and at home, it could charge at a leisurely rate and for normal daily driving use, that would be fine. If my car were electric with the range of a Telsa Model S, only one time in the last year would I have needed fast charging en-route. This is probably true for the majority of vehicles: so the high powered charging stations would be things you find along long distance routes. In reality, charging to a reasonable level in 15 minutes would be entirely adequate, since on a long distance drive you're probably going to want to stop for at least this long.

Comment Re:No mention on capacity though (Score 1) 395

Several reasons:

* Capacitors may require a lot more space and weigh more for the same stored energy - fine at a fixed installation like a recharging station, but impractical in a car where size is a premium.

* Capacitors don't work like batteries - as you discharge them the voltage falls straight away, requiring more complex power regulation to give a consistent output voltage. Much easier to do in a fixed installation where size and complexity isn't a problem, but much more challenging in the confines of a car. Li-Ion type batteries maintain a reasonably steady voltage throughout their entire discharge cycle.

Comment Re:Too bad... (Score 1) 610

85,000 isn't that many for an industrial society to build when you consider the German car industry alone churns out 6 million cars alone (machines much more complex than wind turbines). Many of the UK's wind turbines are offshore too where the wind is very steady and easy to forecast, and enormous windfarms can be made to take advantage of some of the shallow seas around the UK.

Comment Re:Too bad... (Score 1) 610

Modern wind turbines (even at only 30% capacity) will run more like 1000-2000 homes each.

80,000 wind turbines sounds like a lot, but it's not really. Cars are much more complex machines than wind turbines, yet Germany churns out 6 million cars *every single year*. BMW alone probably builds 1 million cars a year in Germany.

Comment Re:And yet IBM soldiers on... (Score 1) 156

The x86 decoder is as large as an entire ARM execution core, and what's more it makes the pipeline and branch prediction a lot more complex with the variable length instructions so necessitates yet more complexity. From an asm point of view (and probably the compiler writer's point of view), a modern RISC processor is simpler to write software for than CISC, things like having all the ALU instructions taking 3 operands, having 32 registers that are truly general purpose (x86 still has some instructions that only work with certain registers) etc. RISC is a bit of a misnomer too. There are CISC chips with fewer instructions than some RISC chips, in reality RISC should be called load and store since that's the main differentiator: ALU instructions on RISC only work on registers and immediate values (which makes the chip a lot simpler to implement), whereas CISC chips often have all sorts of addressing modes for ALU instructions.

Comment Re:Time for a new date (Score 1) 201

Peak oil isn't about quantity of oil, it's about rate of oil extraction. For example, Mexico's Cantarell field at its peak produced oil at a greater rate than the entire Canadian tar sands despite being around 0.1% of the size of what Canada has. We don't yet know whether the rate of production from this field will do anything at all to when peak oil happens.

Comment 5v lines (Score 4, Informative) 167

It's not at all unusual for the 5v and 0v (Vcc and GND) lines to be in the middle of a DIP package (the Slashdot summary sort of implies it's an odd thing). It means the leads within the package are shorter for those lines, lowering parasitic inductance and capacitance for the power supply to the chip, generally you want the decoupling capacitors to be as close to the actual chip as possible so they can be as effective as possible as the power demands change. Putting the supply pins at opposite corners (like it's done on things like 14 pin 74-series standard logic) would very significantly lengthen the distance that the actual supply rails on the chip are from the decoupling capacitors.

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