I just wanted to point out that a significant portion of newer PSUs are designed to European standards which dictates how much Distortion and PF a device can have, rather than US where Utilities dictate the acceptable levels at point of common coupling. The short of it is that several companies have Switchmode PSU's that are low harmonic pollution and can have a PF >= 1 Pretty neat.
I one day felt an urge to play the old school adventure games. SO I dusted off Laura Bow II: Dagger of Amon Ra, an old sierra game. I played it through in a couple of days, and went searching for more. I found the Adventure Company, and have been purchasing their titles to play with the wife. You can find them sometimes for 5 dollars, though 15 bucks is what I usually play. Which isn't a bad deal for 10-20 hours of entertainment for both my wife, and I.
I love firefox and all, its the first thing I install on any new system. In fact I have every one in may family totally devoted to that flaming nocturnal animal, but that is just asinine. Update should do this Auto-magically, give me a warning that it does not do a proper reinstall, or just point to a download. I did the upgrade, assuming that it would deal with the multiple instances of firefox in my programs list. It didn't, now I have 1.0.1 and 1.0.2 listed. Bah. Oh well, I suppose put up or shut up when it comes to free software.
by local code, around here I think developments with more that six residences are required to run conduit, all commercial, and all industrial is conduit. For houses it's usually romex, which means no conduit to any outlets. Even worse, it means the wire is tacked down to the studs inside the wall, so you have to fish the cavity, rather than taping to the old wire, and pulling a new wire.
I defiantly recommend the conduit idea for any data locations. If you have a two location where you know you will have to pull a lot of wires between, one option is to run a flexible smurf tube between the two locations, which is really handy if you have a lot of horizontal space to cover. As far as outlets go, most residential are rated for 15A, ff one of the vertical slots in the receptacle is in the shape of a sideways T than it's a 20A receptacle. However you can string up to about 12 receptacles on a single 20A breaker. Doing the math, this means you can only load them all up to a fraction of the full rating. If you have big plans for a large amount of equipment in one location, you might want to run 1 or 2 dedicated receptacles to a single area.
And on that note, don't plug in an old copier or laser printer into a shared outlet with your computers. Old switch mode power supplies for these devices pull current only at the peak of the waveform, but they pull something like 30-40 amps, which doesn't cause the thermal element in your breaker to trip, and it's not big enough to cause the instant magnetic element to trip. But it can sure screw up your voltage waveform, which can cause your power supply in your computer to wig out(it sees extra zero crossing in the voltage).
Brutal, I feel bad for the guy. I took a signals and systems from him, he has spent a lot of time (sometimes at the expense of class time) the last couple of years getting things going. He was expecting to spend the next couple of years analyze the details. If someone has to reconstruct the data from this lost experiment, he's well qualified to do it.
you should check out What Einstein Told His Cook, a interesting, informed and somewhat scientific approach to cooking in the kitchen. To quote a two line review: " Science in the kitchen. Wolke, a columnist for the Washington Post, offers explanations, humour and some pretty engaging recipes. Unlike many other books of this nature, Wolke wields a lively and light pen."
its called a BLEVE, Boiling Liquid Evaporating Vapour Explosion. I've heard that large liquid propane tanks have a significant blast radius when in this situation.
To fix that problem Electric Fuel has created a zinc/air battery for use in the field. To deal with the multiple battery form factors they have a little plugin empy plastic box, that leads out with a single pigtail. The actual battery actually is two 12 volt stacks that can be wired in parallel or series if you need 24V.
Sorry, didnt mean to be snarky, I just was to lazy to copy and paste;-> And yeah, it's probably the most singly usless writing format ever, except for determining the students ability to A) follow instructions, B)judge if the student completed atleast some of the reading/research assignment C)keeps the teacher from having to actually read the contents;->
Let me digress for a moment, simply to ask, what the fuck is a 'hemi'?
In some ways, its a joke, but I dont think dodge ment it to be so.
Let me digress for a moment, simply to ask, what the fuck is a 'hemi'?
I have seen that word bandied about in commercials. It is clear to me from its use that it is a word the marketing group of that particular manufacturer has seized like a dog upon a rat and is shaking far past its useful life. Having grown up assisting (e.g., handing tools around) on repair of various auto and diesel marine engines, and never having heard the word, I suspect it may be a recently made-up/marketing word.
Hemi is short for Hemispherical Head, meaning the combustion chamber is not round. It was developed for cars during the Horsepower wars of the 40's and 50's, but had been around for a while used in airplains before cars. It was a state of the art engine design at one point in time. Now its pretty common. That's where the joke that Dodge didnt mean to set up when they did that ad. several Dodge or Chrysler (labaron?) low end consumer cars had a hemi in it during the 70's and 80's I belive. It would be like Chevy putting out an add about their new truck being fuel injected. Yeah its cool, but it aint unique.
For some personal feelings on a Hemi: From what I can tell, it appears that what a hemi does well, is high RPM, high hourse power. Cool for racing, and cars but is not what you want when towing. You want low RPM, high Torque. so I cant imagine taking a boat up a hill with that thing. 2nd' gear, 5 grand, and doing 35 mph;->
Thats not necessarily a good argument for why we keep using them. Slide rules stil work, but I prefer atleast a calculator. you still ahve to address that fact that Iron is expensive, heavy and has odd behaviors.
still wrong, but closer with the 120 Hz, at 60 Hz most people have hard time hearing the sound. The noise is created by the real power (p=v*i) the multiplication of the voltage and the current both 60 Hz waveforms. When you multiply two sine waves together you get a doulble frequency and a half frequency component. That is what you are hearing
Not as true anymore, I have a catalog right here, that I can purchase a homogeneous DC-DC converter solution out of. plus it is significantly lighter than a Transfromer. One of the reasons why computers are not really heavy is that the input is rectified, then converted to high refquncy, before passed through a transformer. and the transformer is only their so you have full electrical isolation.
No, Its very easy to step DC up and down with modern Power Electronics devices. Its called a buck converter and a boost converter. your power supply and TV have something similar called a flyback converter.
Slashdot Mirror
Somebody needs to make an extension that checks against this.
I keed, well, 1/2 kidding.
Sorry buddy, diddling choir boys is most certainly not considered honest and law-abiding.
First, download the Keyconfig extension.
Then edit your prefs.js file (found in your profile directory)
Add these two lines:It maps a Zoom all images in to Alt+= and Zoom all images out to Alt+-. You can zoom text and images separately.
P.S. You must have javascript enabled as these are bookmarklets.
Look up Media player classic. My favorite so far, and its all the good parts of MP 6
What percentage of WalMarts employment base is worked about 35 hours a week?
Yes, but it takes some work. For some units, you can use serial to control the channel change.
I just wanted to point out that a significant portion of newer PSUs are designed to European standards which dictates how much Distortion and PF a device can have, rather than US where Utilities dictate the acceptable levels at point of common coupling. The short of it is that several companies have Switchmode PSU's that are low harmonic pollution and can have a PF >= 1 Pretty neat.
Great, lets just wait until WE DECLARE WAR.........
Use very close sizes and a black curtain or black trim piece that obscures everything except the screen.
I one day felt an urge to play the old school adventure games. SO I dusted off Laura Bow II: Dagger of Amon Ra, an old sierra game. I played it through in a couple of days, and went searching for more. I found the Adventure Company, and have been purchasing their titles to play with the wife. You can find them sometimes for 5 dollars, though 15 bucks is what I usually play. Which isn't a bad deal for 10-20 hours of entertainment for both my wife, and I.
You need to do more research on how MTBF is usually found
I love firefox and all, its the first thing I install on any new system. In fact I have every one in may family totally devoted to that flaming nocturnal animal, but that is just asinine. Update should do this Auto-magically, give me a warning that it does not do a proper reinstall, or just point to a download. I did the upgrade, assuming that it would deal with the multiple instances of firefox in my programs list. It didn't, now I have 1.0.1 and 1.0.2 listed. Bah. Oh well, I suppose put up or shut up when it comes to free software.
by local code, around here I think developments with more that six residences are required to run conduit, all commercial, and all industrial is conduit. For houses it's usually romex, which means no conduit to any outlets. Even worse, it means the wire is tacked down to the studs inside the wall, so you have to fish the cavity, rather than taping to the old wire, and pulling a new wire.
I defiantly recommend the conduit idea for any data locations. If you have a two location where you know you will have to pull a lot of wires between, one option is to run a flexible smurf tube between the two locations, which is really handy if you have a lot of horizontal space to cover. As far as outlets go, most residential are rated for 15A, ff one of the vertical slots in the receptacle is in the shape of a sideways T than it's a 20A receptacle. However you can string up to about 12 receptacles on a single 20A breaker. Doing the math, this means you can only load them all up to a fraction of the full rating. If you have big plans for a large amount of equipment in one location, you might want to run 1 or 2 dedicated receptacles to a single area.
And on that note, don't plug in an old copier or laser printer into a shared outlet with your computers. Old switch mode power supplies for these devices pull current only at the peak of the waveform, but they pull something like 30-40 amps, which doesn't cause the thermal element in your breaker to trip, and it's not big enough to cause the instant magnetic element to trip. But it can sure screw up your voltage waveform, which can cause your power supply in your computer to wig out(it sees extra zero crossing in the voltage).
Brutal, I feel bad for the guy. I took a signals and systems from him, he has spent a lot of time (sometimes at the expense of class time) the last couple of years getting things going. He was expecting to spend the next couple of years analyze the details. If someone has to reconstruct the data from this lost experiment, he's well qualified to do it.
you should check out What Einstein Told His Cook, a interesting, informed and somewhat scientific approach to cooking in the kitchen. To quote a two line review: " Science in the kitchen. Wolke, a columnist for the Washington Post, offers explanations, humour and some pretty engaging recipes. Unlike many other books of this nature, Wolke wields a lively and light pen."
its called a BLEVE, Boiling Liquid Evaporating Vapour Explosion. I've heard that large liquid propane tanks have a significant blast radius when in this situation.
To fix that problem Electric Fuel has created a zinc/air battery for use in the field. To deal with the multiple battery form factors they have a little plugin empy plastic box, that leads out with a single pigtail. The actual battery actually is two 12 volt stacks that can be wired in parallel or series if you need 24V.
Sorry, didnt mean to be snarky, I just was to lazy to copy and paste ;-> And yeah, it's probably the most singly usless writing format ever, except for determining the students ability to A) follow instructions, B)judge if the student completed atleast some of the reading/research assignment C)keeps the teacher from having to actually read the contents ;->
Google is your friend.
note, about 35mA will kill you if it traces a path through your heart
Let me digress for a moment, simply to ask, what the fuck is a 'hemi'?
;->
In some ways, its a joke, but I dont think dodge ment it to be so.
Let me digress for a moment, simply to ask, what the fuck is a 'hemi'?
I have seen that word bandied about in commercials. It is clear to me from its use that it is a word the marketing group of that particular manufacturer has seized like a dog upon a rat and is shaking far past its useful life. Having grown up assisting (e.g., handing tools around) on repair of various auto and diesel marine engines, and never having heard the word, I suspect it may be a recently made-up/marketing word.
Hemi is short for Hemispherical Head, meaning the combustion chamber is not round. It was developed for cars during the Horsepower wars of the 40's and 50's, but had been around for a while used in airplains before cars. It was a state of the art engine design at one point in time. Now its pretty common. That's where the joke that Dodge didnt mean to set up when they did that ad. several Dodge or Chrysler (labaron?) low end consumer cars had a hemi in it during the 70's and 80's I belive. It would be like Chevy putting out an add about their new truck being fuel injected. Yeah its cool, but it aint unique.
For some personal feelings on a Hemi:
From what I can tell, it appears that what a hemi does well, is high RPM, high hourse power. Cool for racing, and cars but is not what you want when towing. You want low RPM, high Torque. so I cant imagine taking a boat up a hill with that thing. 2nd' gear, 5 grand, and doing 35 mph
Thats not necessarily a good argument for why we keep using them. Slide rules stil work, but I prefer atleast a calculator. you still ahve to address that fact that Iron is expensive, heavy and has odd behaviors.
still wrong, but closer with the 120 Hz, at 60 Hz most people have hard time hearing the sound. The noise is created by the real power (p=v*i) the multiplication of the voltage and the current both 60 Hz waveforms. When you multiply two sine waves together you get a doulble frequency and a half frequency component. That is what you are hearing
Not as true anymore, I have a catalog right here, that I can purchase a homogeneous DC-DC converter solution out of. plus it is significantly lighter than a Transfromer. One of the reasons why computers are not really heavy is that the input is rectified, then converted to high refquncy, before passed through a transformer. and the transformer is only their so you have full electrical isolation.
No, Its very easy to step DC up and down with modern Power Electronics devices. Its called a buck converter and a boost converter. your power supply and TV have something similar called a flyback converter.