|
neonbregna posted:D.C. Is also the cool and chill form of electric current you can smoke weed with. A.C. is sentient and hates all forms of life. Thanks Thomas Edison, if you hadn't hosed over Tesla things could be better 
|
#
?
Jan 26, 2017 23:44
|
|
|
|
| # ? May 14, 2024 23:31 |
|
|
That's not the relation.
|
|
#
?
Jan 26, 2017 23:53
|
|
|
MF_James posted:Thanks Thomas Edison, if you hadn't hosed over Tesla things could be better Not really ac is vastly superior for transmission
|
|
#
?
Jan 27, 2017 00:09
|
|
|
neonbregna posted:Not really ac is vastly superior for transmission Nah, high voltage is what's vastly superior for transmission, doesn't matter if it's AC or DC. AC is just easier to transform from one voltage to another if it's 1890 and semiconductor devices are still decades away.
|
|
#
?
Jan 27, 2017 00:21
|
|
|
Sagebrush posted:Nah, high voltage is what's vastly superior for transmission, doesn't matter if it's AC or DC. AC is just easier to transform from one voltage to another if it's 1890 and semiconductor devices are still decades away. AC transformers are still more efficient, but the difference isn't very large at this point.
|
|
#
?
Jan 27, 2017 00:43
|
|
|
MF_James posted:Thanks Thomas Edison, if you hadn't hosed over Tesla things could be better Woah what the hell did you just say? (Edit: misunderstood ya, oops) Also as far as DC goes, it's a bitch to mechanically interrupt DC current versus AC. Three-Phase fucked around with this message at 00:55 on Jan 27, 2017 |
|
#
?
Jan 27, 2017 00:46
|
|
|
Random safety thought: is there any reason why a car's headlights don't turn on automatically when the windshield wipers are in use? Would it be difficult to do from a mechanical standpoint?
|
|
#
?
Jan 27, 2017 01:37
|
|
|
Probably beaus you don't want people to think you are signalling to them when you blip the wipers for a few seconds.
|
|
#
?
Jan 27, 2017 01:48
|
|
|
I posted this in the schadenfreude thread, but it's just as good here https://www.youtube.com/watch?v=V3-UugI0JoA
|
|
#
?
Jan 27, 2017 01:54
|
|
|
Bozart posted:AC transformers are still more efficient, but the difference isn't very large at this point. The issue is switching it back to AC at the end of the line to power everything that's designed for AC power. At some point in the length of the transmission line, it's worth it to convert to HVDC because then you avoid the capacitive losses of charging/discharging a really long capacitor 60 times a second. Those losses are much higher for underwater lines, so you'll see more HVDC there, but big thyristors keep improving in price so you're starting to see it more in overland runs as well.
|
|
#
?
Jan 27, 2017 02:02
|
|
|
And then you turn it back into AC power to send to people's homes, at which point they have a dozen tiny boxes that each individually turns it back into DC again, then slices it up to tens of kilohertz switched current, to transform it down to 5V, and then back to DC yet again to power the stuff people care about.
|
|
#
?
Jan 27, 2017 02:08
|
|
|
Jabor posted:And then you turn it back into AC power to send to people's homes, at which point they have a dozen tiny boxes that each individually turns it back into DC again, then slices it up to tens of kilohertz switched current, to transform it down to 5V, and then back to DC yet again to power the stuff people care about. There is still a lot of household stuff that runs on straight 60Hz 120V.
|
|
#
?
Jan 27, 2017 02:12
|
|
|
Volcott posted:Random safety thought: is there any reason why a car's headlights don't turn on automatically when the windshield wipers are in use? Would it be difficult to do from a mechanical standpoint? Most cars made after like 2005 just have the headlights on all the time.
|
|
#
?
Jan 27, 2017 02:13
|
|
|
`Nemesis posted:I posted this in the schadenfreude thread, but it's just as good here lmao at the one that catches fire
|
|
#
?
Jan 27, 2017 02:14
|
|
|
`Nemesis posted:I posted this in the schadenfreude thread, but it's just as good here why don't they just lower th
|
|
#
?
Jan 27, 2017 02:28
|
|
|
Phanatic posted:There is still a lot of household stuff that runs on straight 60Hz 120V. Pretty much just big white goods at this point, I think. Perhaps some older kitchen appliances? Virtually everything these days has an actual microcontroller and hence at least some circuitry to turn AC into low-voltage DC. And a lot of portable appliances use that power circuitry to power the entire device, so you get it to be 110/230V agnostic for free.
|
|
#
?
Jan 27, 2017 02:30
|
|
|
`Nemesis posted:I posted this in the schadenfreude thread, but it's just as good here What the gently caress happened at 1:02? edit: nvm you can see it better in later shots that they are ramming a curb that sends them flying in to the other lane. Irradiation fucked around with this message at 02:37 on Jan 27, 2017 |
|
#
?
Jan 27, 2017 02:35
|
|
|
Yeah the lane narrows to the point where the curb is basically where the middle of the lane used to be. 
|
|
#
?
Jan 27, 2017 02:51
|
|
|
boner confessor posted:lmao at the one that catches fire They sure took their sweet time putting it out!
|
|
#
?
Jan 27, 2017 03:15
|
|
|
tactlessbastard posted:They sure took their sweet time putting it out! Judging by the incident at 1:11, they may have had a score to settle with the bridge.
|
|
#
?
Jan 27, 2017 03:20
|
|
|
Phanatic posted:The issue is switching it back to AC at the end of the line to power everything that's designed for AC power. At some point in the length of the transmission line, it's worth it to convert to HVDC because then you avoid the capacitive losses of charging/discharging a really long capacitor 60 times a second. Those losses are much higher for underwater lines, so you'll see more HVDC there, but big thyristors keep improving in price so you're starting to see it more in overland runs as well. You also cannot transfer reactive power (heavily used by induction motors in all kinds of things) through DC lines. So at the inverter station you need to have big banks of capacitors or synchronous condensers.
|
|
#
?
Jan 27, 2017 03:21
|
|
|
Volcott posted:Random safety thought: is there any reason why a car's headlights don't turn on automatically when the windshield wipers are in use? Would it be difficult to do from a mechanical standpoint? It's just a relay for old-school cars or an ECU tweak in new ones. My 2012 Challenger has amber DRL's up front but turns the headlights and tail lights on when the wipers run.
|
|
#
?
Jan 27, 2017 03:24
|
|
|
suuma posted:Most cars made after like 2005 just have the headlights on all the time. But not the tail lights, which is a huge loving annoyance when it's dusk and pissing rain, grey cars are practically invisible.
|
|
#
?
Jan 27, 2017 03:26
|
|
|
suuma posted:Most cars made after like 2005 just have the headlights on all the time. DRLs aren't the same as having your headlights on. The tail lights aren't on, and it's not nearly as bright as your headlights. Doesn't stop people from driving at night on them though.
|
|
#
?
Jan 27, 2017 03:30
|
|
|
Guy Axlerod posted:DRLs aren't the same as having your headlights on. The tail lights aren't on, and it's not nearly as bright as your headlights. Doesn't stop people from driving at night on them though. What are these people saving their headlights for, double nighttime?
|
|
#
?
Jan 27, 2017 03:34
|
|
|
suuma posted:Most cars made after like 2005 just have the headlights on all the time. DRLs aren't always the same as actual headlights. Bad implementations of DRLs are worse than not having them at all, like the cars where the low beams and dashboard lights are on all the time so you end up with morons driving around in black cars at night with no taillights. Subaru did it right - the dashboard isn't illuminated unless you turn on the headlights, and the headlights turn off when you take the key out so you can't accidentally leave the lights on like my neighbor who has a jeep.
|
|
#
?
Jan 27, 2017 03:36
|
|
|
neonbregna posted:A.C. is sentient and hates all forms of life. "Spooky, ain't it?" https://www.youtube.com/watch?v=tVJzwG4Ee4c PS I'm the CWT INTK STRUCT Three-Phase fucked around with this message at 03:45 on Jan 27, 2017 |
|
#
?
Jan 27, 2017 03:41
|
|
|
Three-Phase posted:"Spooky, ain't it?" Glad I'm not the only one who remembers this movie. This, and the HBO movie "Wedlock" or "Deadlock" are movies that it took me years and years to remember the name of. Greatest Exploding Head movie ever https://www.youtube.com/watch?v=TZesS-EUP6E
|
|
#
?
Jan 27, 2017 04:05
|
|
|
Volcott posted:Random safety thought: is there any reason why a car's headlights don't turn on automatically when the windshield wipers are in use? Would it be difficult to do from a mechanical standpoint? Daytime running lights are the much easier and more obvious choice. Of course so is metric.
|
|
#
?
Jan 27, 2017 04:06
|
|
Yes, it's like a lava lamp.
|
Sagebrush posted:Nah, high voltage is what's vastly superior for transmission, doesn't matter if it's AC or DC. AC is just easier to transform from one voltage to another if it's 1890 and semiconductor devices are still decades away. Semicondutor devices (specifically diodes) are actually pretty old, older than vacuum tubes. They were scientific curiosities in the 1870s and first commercially sold in 1906 It’s just that it took a really long time for them to become practical for high‐power applications.
|
|
#
?
Jan 27, 2017 09:05
|
|
|
Guy Axlerod posted:DRLs aren't the same as having your headlights on. The tail lights aren't on, and it's not nearly as bright as your headlights. Doesn't stop people from driving at night on them though.
|
|
#
?
Jan 27, 2017 09:21
|
|
|
evil_bunnY posted:Wait DRLs don't have the tail lights on in the US? What kind of retardation is this? Thanks Obama. 
|
|
#
?
Jan 27, 2017 09:25
|
|
|
evil_bunnY posted:Wait DRLs don't have the tail lights on in the US? What kind of retardation is this? Or Australia. Where are you that they do? Or what car manufacturers do?
|
|
#
?
Jan 27, 2017 09:25
|
|
|
Personally I just have my headlights on every time I'm driving, even during the day. Am I weird for doing this?
|
|
#
?
Jan 27, 2017 09:33
|
|
|
VodeAndreas posted:Or Australia.
|
|
#
?
Jan 27, 2017 09:36
|
|
|
Mikl posted:Personally I just have my headlights on every time I'm driving, even during the day. Am I weird for doing this? Yes.
|
|
#
?
Jan 27, 2017 10:02
|
|
|
You actually get fined in some parts of Europe for turning them off during the day.
|
|
#
?
Jan 27, 2017 10:04
|
|
|
Jack-Off Lantern posted:You actually get fined in some parts of Europe for turning them off during the day. Isn’t it literally impossible to turn off the lights in most of those countries, though?
|
|
#
?
Jan 27, 2017 10:06
|
|
|
Platystemon posted:Isn’t it literally impossible to turn off the lights in most of those countries, though? In some cars. In my car, for example, you can't turn off all lights, but you can turn off the headlights and only have parking/marker lights (which are not DRLs).
|
|
#
?
Jan 27, 2017 10:16
|
|
|
|
| # ? May 14, 2024 23:31 |
|
|
Platystemon posted:Isn’t it literally impossible to turn off the lights in most of those countries, though? Only on newer cars. Like after 2015 or so. Plenty of cars left on the roads that allow you to do whatever with your lights. Platystemon posted:Yes. Don't listen to this idiot. Driving with lights on during the day is way safer.
|
|
#
?
Jan 27, 2017 10:48
|
|