81–90 of 163 posts
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I do wish your blog articles had the published date at the top.
It's my subtle protest against the HN belief that people need to be warned against articles from previous years. That said, it's a bit alarming to realize I wrote the article 9 years ago.
And now power supplies are getting another step smaller and more efficient by switching from silicon transistors to GaN. ( https://www.cui.com/blog/how-gallium-nitride-gan-enables-sma... )
Hopefully this tech finds its way into more devices as it gets cheaper. It would be neat to have GaN based inverters for electric cars.
And now power supplies are getting another step smaller and more efficient by switching from silicon transistors to GaN. ( https://www.cui.com/blog/how-gallium-nitride-gan-enables-sma... )
While obviously Jobs’ claim was false, I will say that Apple is the only company I am aware of that manufacturers power supplies which are reliably completely free of perceptible inductor whine. I have very acute high-frequency hearing and I often have to replace non-Apple USB(-C) switching power supplies with Apple ones so I don’t go crazy from the whining. Teardowns of Apple PSUs typically reveal very favorable ele…
> Apple is the only company I am aware of that manufacturers power supplies which are reliably completely free of perceptible inductor whine...I often have to replace non-Apple USB(-C) switching power supplies it's a well-studied economic fact that monopolists generally sell higher quality products, and it helps them maintain their monopoly. With their market power and the fat margins they earn, there is plenty of bu…
Well, that's completely ahistorical. "Nobody ever got fired for buying IBM" was due to conservatism and idiocy on the part of managers and businesspeople, not to mention... you know... IBM's monopoly power and the advantages that went along with that. During the bulk of the minicomputer and mainframe era it had little or nothing to do with the relative quality of IBM's stuff.
Earlier quoted context omitted.
It's my subtle protest against the HN belief that people need to be warned against articles from previous years. That said, it's a bit alarming to realize I wrote the article 9 years ago.
Hi, kens. This is my n-th time rereading this article, this time I noticed a small typo. Footnote 90, "More recent VMR specifications" should've been "VRM".
I never heard that Apple invented switching power supplies... how common is that train of thought? I've been using them since way before this article was written
The article is neither making or debunking that claim. It is debunking the claim that apple revolutionized computer power supplies by borrowing the switching power supply design used in oscilloscopes. It’s the second sentence of the post.
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The article is debunking this claim by Steve Jobs: "That switching power supply was as revolutionary as the Apple II logic board was," Jobs later said. "Rod doesn't get a lot of credit for this in the history books but he should. Every computer now uses switching power supplies, and they all rip off Rod Holt's design."’
Which like the GUI was ripped off from someone else: The GUI was stolen from Xerox, and the switching power supplies were ripped of from an oscilloscope company, Hewlett-Packard. Didn't Woz work for them. Hmmmm...
And on switching power — did any other computer company think to use it? Apple did. And borrowing that tech did revolutionize computer power supplies.
Earlier quoted context omitted.
I do wish your blog articles had the published date at the top.
It's my subtle protest against the HN belief that people need to be warned against articles from previous years. That said, it's a bit alarming to realize I wrote the article 9 years ago.
Earlier quoted context omitted.
Well, he’s dead and I’m still here. I don’t think he made it.
Maybe he would still be alive if he didn't try to fake his cancer treatments https://www.scientificamerican.com/article/alternative-medic...
The peanut gallery is not to be trusted on how curable his cancer was, and this article says nothing firm about anything.
If someone chooses not to be tortured for their last weeks of life, in order to have those weeks, that doesn't make them unscientific or suicidal.