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hristov 7 hours ago

It is absolutely stupid to talk about this as edisons revenge. If Tesla had the modern high power transistors needed to get high voltage dc out of the ac produced from a spinning turbine he would be all for high voltage dc too. Tesla understood that high voltage was needed for efficient long range transmission. He also understood that transformers were the inly remotely efficient way to climb up to and down from these high voltages. And transformers only work with ac. So he designed an ac system and even designed some better transformers for it.

If there was anything like a high power transistor back then he would have used that. High power transistors that are robust enough to handle the grid were designed inly recently over 100 years after the tesla/edison ac/dc argument.

teleforce 4 hours ago | parent | next [-]

>It is absolutely stupid to talk about this as edisons revenge. If Tesla had the modern high power transistors needed to get high voltage dc out of the ac produced from a spinning turbine he would be all for high voltage dc too.

This!

The soon people realized these facts the better. The pervasive high rise buildings did not happen before the invention of modern cranes.

Exactly twenty years ago I was doing a novel research on GaN characterization, and my supervisors made a lot money with consulations around the world, and succesfully founded govt funded start-up company around the technology. Together with SiC, these are the two game changing power devices with wideband semiconductor technology that only maturing recently.

Heck, even the Nobel price winning blue LED discovery was only made feasible by GaN. Watch the excellent video made by Veritasium for this back story [1].

[1] Why It Was Almost Impossible to Make the Blue LED:

https://youtu.be/AF8d72mA41M

ta9000 2 hours ago | parent | next [-]

Does that mean when we run out of Ga there are no more LED TVs?

mcbishop 4 hours ago | parent | prev | next [-]

I've heard the EV charging has played a big role in the maturation of GaN / SiC.

teleforce 4 hours ago | parent [-]

Yes, EV and high frequency electronics (microwave, mmWave, photonics) that require very fast switching capability.

UltraSane 3 hours ago | parent [-]

And military radars love GaN

jibal 3 hours ago | parent | prev [-]

https://shrunk.ai/research-journals/f/cranes-skyhooks-and-it...

chrneu 5 hours ago | parent | prev | next [-]

the internet really needs to stfu about tesla and get over that oatmeal comic that spawned a billion internet myths. dude was a decent inventor but suffered from chronic mental health issues and, in his lifetime, wasted so much time/energy/money and burned so many bridges with his horrible attitude. there's a reason most people didnt like him in his day, he was a depressed asshole who alienated everyone around him, and yes I know he was likely gay in a time when that wasn't cool. the fact still remains; his inventions are massively overblown by internet nerds.

the podcaster Sebastian Major from "Our Fake History" did a looonnngg patreon episode on tesla and debunked most of the weird myths around tesla. Sebastian doesn't have a vendetta or anything, it's just amazing how much of the Tesla stuff is just nonsense or is viewed through a very weird bias nowadays. Major also briefly touches on the weird Edison stuff and how the internet has twisted Edison into a villain.

aaronbrethorst 3 hours ago | parent | next [-]

We’re talking about Nikola Tesla, not Elon Musk, and I don’t think Musk is gay.

beAbU 37 minutes ago | parent [-]

I think you need to read the post you are responding to again.

aaronbrethorst 13 minutes ago | parent [-]

Whoosh!

anonymousiam 4 hours ago | parent | prev [-]

Tesla was an outstanding technologist, but a poor businessman. He had a "vision" (actually more than one) about how his ideas could transform the world. Some of his ideas were amazing, but he was swindled out of his patents because the investors knew he had a passion and wanted to see them in use. The polyphase AC motor or fluorescent light bulb could have made him millions.

IMHO, the vision he had about universal free electricity (transmitted wirelessly) was the dumbest. It was a novel idea, and he invested a lot (his time and other people's money) in it. The problem with his idea is that there was no way to monetize it (and profit from it). (There were also the technical issues of the power loss over distance (1/R^2), the harm to the environment, and the interference with radio communications.)

Edison was quite a villain. He stole many of his "inventions", and orchestrated a PR campaign against Tesla touting the "evils" of AC power. AFAIK, the electric chair was either invented or inspired by him.

I know these things because I've read many books on various topics related to Tesla, and all of this knowledge predates the Internet.

fsh 3 hours ago | parent | next [-]

Essentially none of this is true. The war of the currents was between Edison and Westinghouse, not Tesla. Tesla's downfall was that he turned into a crackpot who rejected modern science, such as Maxwell's equations, and started defrauding investors. Edison was an outspoken opponent of the death penalty, and the electric chair used AC simply because it is much more deadly.

HWR_14 3 hours ago | parent | prev [-]

Edison did not invent the electric chair. When the inventors were trying to choose between using AC or DC he helped them decide on AC as part of his PR campaign.

arijun 7 hours ago | parent | prev | next [-]

Also, if anything would have been Edison's revenge it would have been HVDC, where they're sending power long distances with DC. (But as you said, even there it wouldn't make a ton of sense, since they were arguing in a different era).

5 hours ago | parent | next [-]
[deleted]
themafia 5 hours ago | parent | prev [-]

The two primary reasons to do that are to allow the intertie of two AC grids that are not otherwise synchronized, and to take advantage of "earth return" paths when necessary to double the capacity of the line. The latter you may need to consider just to make the line cost effective over an equivalent AC span.

Georgelemental 6 hours ago | parent | prev | next [-]

It's just a fun title, you are overthinking it

fsh 3 hours ago | parent | prev | next [-]

It was Westinghouse who pushed the AC grid against his rival Edison's DC approach. Tesla was a minor figure working for both of them for a bit.

jacquesm 6 hours ago | parent | prev | next [-]

Agreed, for the IEEE to go down this route is more than a little weird.

bryanrasmussen 3 hours ago | parent | prev | next [-]

sure, and also Montezuma didn't actually plan on diarrhea ruining people's vacations, but vernacular usage being what it is we have the phrase Montezuma's revenge.

I only found Edison in the headline, I didn't find it anywhere in the body, nor did I find Tesla. Glancing through the article it almost seems like someone tried to make a catchy headline to get clicks.

bluGill 6 hours ago | parent | prev [-]

Tesla also design the modern induction motor which needs ac. Though these days we often run them on a phase generator which has a dc step.