Wouldn't braile output be better? It would allow for more privacy without the need for headphones, and I suspect most blind people could read it faster.
1 or 2 out of 40 get through? And you think that's good? If we average that, it makes it about 96.3% With my spamassassin I haven't had any spam slip through or any false positives in almost a year (thousands of spams blocked)!
This is not a very good review. They did not make any useful measurements of the supply, nor did they even crack it open to see if it's well designed.
For some reason they used an actual computer as a load. That is going to result in an inconsistant load and useless results.
They claim to have measured "power" with a simple DMM. You cannot measure AC power this way. What they probably measured was apparant power. This doesn't take into account inductive or capacitive loads.
The voltage table is useless because the amount of load is unknown and inconsistent between tests.
There is no measurement of electrical noise on the output - which is the only problem I have ever had with PC PSUs (besides outright failures).
Basically their only real conclusion as "all of the power supplies worked".
Pretty much inaudible? When was the last time you listened to 8-bit audio? It's hardly "high-quality". I'd say the extra 8 bits are pretty important. Of course if the algorithm was smarter, it would be possible to hide a fair bit of data in there without affecting the audio.
For those of you wondering about linux drivers - ATI's fglrx linux driver works fairly well (I use it to play HD.ts files on a Radeon 9800 pro). The only problems are lack of support for xvmc, and some problems with dual head (confusing config, xinerama issues). I don't have any performance issues with full bandwidth 1080i content and 5.1 sound running on a 720p display (video de-interlaced with mplayer's halfpack filter).
The article talks about how much power this thing makes, but they never say how much energy you get from it! Saying that it makes 10kW is meaningless if you don't know how long that 10kW lasts. I'm guessing it is an extremely short period of time, perhaps even in the order of microseconds. This is not news, it's just lame advertising. Nothing to see here, move along.
Oh, and gasoline isn't exactly the cheapest energy source these days anyway...
I am a Christian (protestant). I have not found any Biblical basis for discounting evolution. I personally highly doubt a lot of current evolutionary theory, but that has very little to do with my religious beliefs. I just don't see very much solid evidence for it. We know a lot less about how the universe works than most people think. Chances are a lot of theories we think are solid now will be laughable in the near future.
Why does nobody seem to understand that we know very little about the universe. Chances are much of what people think is scientifically sound now will be laughable as little as 100 years from now. It's foolish not to consider that all our best theories could be wrong.
Because there are theoretical and practical limits. You can't pick up a signal that is totally burried in background noise no matter how good your receiver is.
Also the 5 kilometers is with a directional antenna at each at. That's transmitting AND receiving. I highly doubt your are going to do anything to your brain with stuff anyway. Not unless you sit for hours on end with your head right infront of the transmitting antenna.
I'd be curious i anyone knows if this alleged spontaneous combustion / voltage relationship holds any water.
None at all. That's only half of the information you need to know the potential energy. You need to know the amount of charge as well. A volt can be defined as one joule (potential energy) per coulomb (charge). In other words, how many electrons transferred between the jacket and the sweater?
The draft also includes the option of using nuclear arms to destroy known enemy stockpiles of nuclear, biological or chemical weapons.
Let me see if I've got this right. WMDs are bad. In order to prevent people from stockpiling WMDs, the US stockpiles WMDS to use to destroy anyone else's stockpiles. Yep, makes perfect sense.
New PCs come with Starter Edition or Home Edition. Then you have to buy Home Edition or Home Premium Edition after the fact. Just another way of getting people to pay for copies of Windows they will never use. There should be a site where people can "give away" their extra windows licenses to charitable organizations.
While a power supply with a higher rating may have a cleaner output than a one with a lower rating, this is not necessarily the case. Without other measurements there simply isn't enough information to say.
Computer power supplies use a switching circuit to generate the output voltages. Not the simply, rectifier and filter system you described. They do use a recifier and filter, but this is only at the initial stage and ripple at that point doesn't significantly affect the output.
In a rectifier and filter supply, using a full wave rectifier does not double efficiency. It does allow you to get by with less filtering and a reduced peak input current.
Creating a full wave bridge rectifier doesn't involve adding 1 component to a half wave rectifier. In fact, you need 3 more components. A half wave rectifier is just a single diode. A full wave rectifier consists of 4 diodes.
Switching supplies do have ripple, and it is effected by the load on the supply. Some of the other factors affecting the amount of ripple are switching frequency, inductance of the switched coil, capacitance and resistance of the output capacitor, and input voltage.
Capacitors placed near ICs on the motherboard are for filtering out high frequency noise than can be induced on the circuit board traces. These capacitors are not normally the right values for filtering out 60 or 120 hz noise from a rectifier. If it weren't for induced noise on the traces, you could simply place one capacitor at (or in, as there already is) the power supply instead of one at each IC.
Your computer should run perfectly stable on any supply up to its rated output power and current. If a supply outputs so much noise that your computer is unstable before you reach the rated output, then it is almost certainly faulty or rated in such a way as to scam consumers.
With the same load, a higher rated supply might run cooler or with a cleaner output; but it depends on many different factors. You need to know things like output noise and efficiency. Output power alone is not enough information.
Slashdot Mirror
Wouldn't braile output be better? It would allow for more privacy without the need for headphones, and I suspect most blind people could read it faster.
You mean like peoplemeter? There is an audio version of this for radio as well.
1 or 2 out of 40 get through? And you think that's good? If we average that, it makes it about 96.3% With my spamassassin I haven't had any spam slip through or any false positives in almost a year (thousands of spams blocked)!
Just because it is a simple operation doesn't mean that their code to do it is efficient.
This is not a very good review. They did not make any useful measurements of the supply, nor did they even crack it open to see if it's well designed.
For some reason they used an actual computer as a load. That is going to result in an inconsistant load and useless results.
They claim to have measured "power" with a simple DMM. You cannot measure AC power this way. What they probably measured was apparant power. This doesn't take into account inductive or capacitive loads.
The voltage table is useless because the amount of load is unknown and inconsistent between tests.
There is no measurement of electrical noise on the output - which is the only problem I have ever had with PC PSUs (besides outright failures).
Basically their only real conclusion as "all of the power supplies worked".
Some guys wrote a joe-sixpack friendly http proxy with ssl.
Pretty much inaudible? When was the last time you listened to 8-bit audio? It's hardly "high-quality". I'd say the extra 8 bits are pretty important. Of course if the algorithm was smarter, it would be possible to hide a fair bit of data in there without affecting the audio.
For those of you wondering about linux drivers - ATI's fglrx linux driver works fairly well (I use it to play HD .ts files on a Radeon 9800 pro). The only problems are lack of support for xvmc, and some problems with dual head (confusing config, xinerama issues). I don't have any performance issues with full bandwidth 1080i content and 5.1 sound running on a 720p display (video de-interlaced with mplayer's halfpack filter).
The article talks about how much power this thing makes, but they never say how much energy you get from it! Saying that it makes 10kW is meaningless if you don't know how long that 10kW lasts. I'm guessing it is an extremely short period of time, perhaps even in the order of microseconds. This is not news, it's just lame advertising. Nothing to see here, move along. Oh, and gasoline isn't exactly the cheapest energy source these days anyway...
I am a Christian (protestant). I have not found any Biblical basis for discounting evolution. I personally highly doubt a lot of current evolutionary theory, but that has very little to do with my religious beliefs. I just don't see very much solid evidence for it. We know a lot less about how the universe works than most people think. Chances are a lot of theories we think are solid now will be laughable in the near future.
They aren't storing it for a year, it's usually more like a week. And a lot of news servers that have binaries and good retention times are not free.
Why does nobody seem to understand that we know very little about the universe. Chances are much of what people think is scientifically sound now will be laughable as little as 100 years from now. It's foolish not to consider that all our best theories could be wrong.
There have been a lot of great features added in the past few years. Here's a few of the major ones: folding, improved syntax highlighting, quickfix.
And because it will take about as long to be hacked as macrovision took.
Because there are theoretical and practical limits. You can't pick up a signal that is totally burried in background noise no matter how good your receiver is.
Also the 5 kilometers is with a directional antenna at each at. That's transmitting AND receiving. I highly doubt your are going to do anything to your brain with stuff anyway. Not unless you sit for hours on end with your head right infront of the transmitting antenna.
I think you meant to say "it's copyright infringement". It isn't the same thing.
I'd be curious i anyone knows if this alleged spontaneous combustion / voltage relationship holds any water.
None at all. That's only half of the information you need to know the potential energy. You need to know the amount of charge as well. A volt can be defined as one joule (potential energy) per coulomb (charge). In other words, how many electrons transferred between the jacket and the sweater?
or rather, to reduce inductance, resistance, and capacitance of the trace and to provide a smaller area for noise to be induced.
A Microsoft product that uses a config file? WOW. Wasn't that what the registry was supposed to do?
Also, for those saying a restart is required, you can make apache reread the config file by sending it a SIGHUP.
The draft also includes the option of using nuclear arms to destroy known enemy stockpiles of nuclear, biological or chemical weapons.
Let me see if I've got this right. WMDs are bad. In order to prevent people from stockpiling WMDs, the US stockpiles WMDS to use to destroy anyone else's stockpiles. Yep, makes perfect sense.
New PCs come with Starter Edition or Home Edition. Then you have to buy Home Edition or Home Premium Edition after the fact. Just another way of getting people to pay for copies of Windows they will never use. There should be a site where people can "give away" their extra windows licenses to charitable organizations.
or... spyware/adware/spamware.
True. I didn't mention the center tapped method as it doesn't apply to computer power supplies.
I can't believe you use that outdated WM! Get with the times and switch to FVWM!
While a power supply with a higher rating may have a cleaner output than a one with a lower rating, this is not necessarily the case. Without other measurements there simply isn't enough information to say.
Computer power supplies use a switching circuit to generate the output voltages. Not the simply, rectifier and filter system you described. They do use a recifier and filter, but this is only at the initial stage and ripple at that point doesn't significantly affect the output.
In a rectifier and filter supply, using a full wave rectifier does not double efficiency. It does allow you to get by with less filtering and a reduced peak input current.
Creating a full wave bridge rectifier doesn't involve adding 1 component to a half wave rectifier. In fact, you need 3 more components. A half wave rectifier is just a single diode. A full wave rectifier consists of 4 diodes.
Switching supplies do have ripple, and it is effected by the load on the supply. Some of the other factors affecting the amount of ripple are switching frequency, inductance of the switched coil, capacitance and resistance of the output capacitor, and input voltage.
Capacitors placed near ICs on the motherboard are for filtering out high frequency noise than can be induced on the circuit board traces. These capacitors are not normally the right values for filtering out 60 or 120 hz noise from a rectifier. If it weren't for induced noise on the traces, you could simply place one capacitor at (or in, as there already is) the power supply instead of one at each IC.
Your computer should run perfectly stable on any supply up to its rated output power and current. If a supply outputs so much noise that your computer is unstable before you reach the rated output, then it is almost certainly faulty or rated in such a way as to scam consumers.
With the same load, a higher rated supply might run cooler or with a cleaner output; but it depends on many different factors. You need to know things like output noise and efficiency. Output power alone is not enough information.