in japan, there is no standard AC frequency. as a result, there are two national grids. also, Japan is the only country using 100V voltage
And somehow their CRTs still were 60hz even in the 50hz regions. What gives?
>>107566933>japan is a backwards shithole despite trying to appear as technologically innovativenothing surprising
>>107567113CRTs depend on broadcasting standards, them matching the AC frequency makes some parts of their design slightly easier but it's not necessary. Japan just adopted America's standard nation-wide. Practically all CRTs past a certain point were able to switch between 50Hz and 60Hz regardless of the power frequency.
>>107567217>using less power to accomplish the same job makes you a backwards shitholeDon't you have to refuel your gasoline powered television or something?
>>107567287>using less power to accomplish the same jobexplain the logic behind this statement
>>107567287voltage != power
>>107566933>in japan, there is no standard AC frequencyThis is wrong.There are two standards.
There are five grids in US/Canada. So what?
>>107566933I still remember when japan was occupied by germany (north) and the USA (south). So many causalities at the second border war.
now days it doesn't matter.
>>107567113In the very early days, TV was matched to line frequency for performance reasons. It was not actually a hard requirement. And as electronics got better this synchronization became less important. When color game out, TV was uncoupled from line rate. Also, Japan TV broadcast apparently started in 1953, so it totally skipped the early TV era where synchronization mattered.
for the life of me I can't understand the difference between wattage, voltage or amperage, how they relate and what they're used for. most explanations are surface level babyshit and I don't get it because I don't see the bigger picture.I somehow got a job in electrical infrastructure but I don't know shit!
>>107567943Voltage is like the diameter of a pipe, amperage is the amount of water flowing through it, and wattage is if you take that diameter and multiply it by the amount of water flowing through it.
>>107567964no, voltage is like pressure. and wattage is just wattage (water flowing through a pipe also uses energy). admittance would be the cross-sectional area of the pipe. this is why adding another branch in parallel always increases current flow even if the new branch has one gorillion resistance, because you still added more pipe area.
>>107567964>>107569127thanks, I still don't get it. I think the pipe analogy is good but two different things about voltage make me confused againso lets say I have the pipe and the amperage exceeds the amount the physical material can handle, does the pipe burst (cable melt)? then what about if voltage is exceeded or is that not possible?
>>107567113televisions being driven by line frequency is something only seen on the earliest, simplest, vacuum-tube based sets, it hasn't been a requirement since transistorisation
>>107567287this makes no sense. 100V isn't "less power" than 240V, as voltage is not a measure of power.higher voltages tend to be more efficient, both in terms of transformation and also in copper usage. like for example you can use 2.4x less copper with a 240V circuit vs. 100V given the same load
>>107569448They were never actually driven by line frequency. The sync pulses in the broadcast have always been what controlled horizontal and vertical oscillators. Line sync was a performance thing to improve image quality on early sets whose power supplies were not very good. Without line sync there would be visible artifacts on screen due unsycronized power supply ripple.
100 volts? Do Japs not like tea anymore?
>>107567811I love that band
>>107566933100v truly sucks, make sure you don't run a water boiler and vacuumcleaner simultaneously kinda thing. and that waterboiler is twice as slow as a european one.
>>107566933It's actually pretty bullshit because some of your big appliances tend to not work if you move from tokyo to osaka or vice versa.Older washing machines for example.My microwave oven is also locked to 1000W on 50hz even though it can do 1200W on 60hz. It's stupid
>>107567287retard
>>107567287I can't believe we share a board with retards like this
>>107566933>100VCringe. Anything over 220V is the superior standard.
>>107569405voltage is pressure, that anon was right, the other was wrong. its how high you can make water go if you point a hose up, same, its how much electricity can jump in the air, the higher the more distance or insulator between wires you need.
>>107569642https://www.youtube.com/watch?v=W9xxef9roPg
>>107569631Can I get the reference number for that JAV?
>>107566933Since everyone on /g/ is a cumbrain, I'll post an image that even you can understand
>>107569405power loss goes up in the square of amperage, so when you hit the maximum things heat up quickly beyond being safe. voltage has much less direct effect on the cable, the main danger there is that someone might touch a live wire and electrocute themselves.
>>107566933Japanese power outlets are similar to NA ones but without the grounding slot. Why?
>>107569448My 2004 pal trinitron displayed black top and bottom horizontal borders when playing 60hz content
>>107567943
>>107572356that has nothing to do with what i said. but with regards to what you said, that letterboxing is usually just a conversion artifact. that is the content like a video game is displaying the lower resolution ntsc graphics in a higher resolution pal framebuffer, resulting in blank areas at the top and bottom
>>107570911>>107572405>no bulgesYikes!
>>107569405>so lets say I have the pipe and the amperage exceeds the amount the physical material can handle, does the pipe burst (cable melt)? then what about if voltage is exceeded or is that not possible?voltage being like pressure in a water pipe still holds as an analogue here, because too high a voltage for a given wire will result in a breach of its' insulation. i.e. it will arc out to something outside of the wire, kind of like a burst pipe.higher voltages require more insulation (water pipe thickness)
>>107572534>>107569405as for amps, that's the speed of the water through the pipe, and watts is the volume of water flowing through for a given period of time. they aren't the same as the resistance (diameter) of the wire (pipe) can vary. a large (low resistance) pipe can deliver more power (watts/water) than a smaller pipe at a given flow rate
>>107572356For TVs without full support for 60hz this is to be expected. The vertical size is calibrated for 50hz. The scan moves across the screen at a fixed rate, at 60hz it has less time, so it can't cover the full size of the screen. TVs that fully support both 50 and 60hz detect the frame rate and adjust the vertical size to compensate.
>>107566933This is evidence that we live in an altered timeline.Originally Japan was occupied by American and Soviet forces following WW2, and as a result two different AC standards. But because of meddling by time travelers, Japan was only occupied by the US and this is the only thing that didn't change when the timeline fractured.
