设计与产品righto.com
MacBook 充电器拆解：苹果电源适配器内部的惊人复杂度
Macbook charger teardown: surprising complexity inside Apple's power adapter
2015 — 2024，它一次次回到首页
黑点是上首页（≥ 50 分）的那次投稿，空心点是没冲上去的投稿，点越大分数越高。
导读
Ken Shirriff 的经典拆解文章：作者拆开 Apple 85W MacBook 电源适配器，展示其内部远超预期的复杂电路设计，包括反激式开关电源、精密的干扰滤波和安全保护电路。文章还对比了廉价山寨充电器，解释了 Apple 充电器贵在哪里、安全在哪里。
为什么经久不衰：把一个日常小物拆解出工程深度，兼具技术干货和可读性，近十年后仍是理解开关电源和充电器安全差异的最佳入门读物。
HN 评论精选
复杂度真实存在，但不足以解释售价；乔布斯关于 Rod Holt 发明开关电源的说法言过其实。
这篇文章很有意思！作为科班出身的电子工程师（上过整整两学期电源课程），我告诉别人这种复杂度并不让我惊讶时，总让人大跌眼镜——但这种复杂度并不足以完全解释价格差异。另外，Jobs 确实是个十足的骗子：现代计算机的开关电源都基于标准拓扑结构，Rod Holt 虽然是位出色的工程师，但并非其发明者，那是一种当时早已广为人知的反激式设计。
weland查看英文原文
This is a pretty interesting article! I raised more than my fair share of eyebrows by telling people I'm not really surprised with this kind of complexity (note: I'm an EE by formation, I took a frickin' two-semester course on power supplies) but that it doesn't fully justify the price difference. Also, Jobs was a blatant liar :-). The SMPS in any modern computer is based on a standard topology that Rod Holt -- though a brilliant engineer in his own right -- didn't invent. I don't remember the specific details, but it's based on a flyback design that was certainly well-known at the time.
原装充电器用料确实更好，但溢价过高，希望市场出现性价比更高的优质替代品。
我的结论是：80 美元的 Apple 充电器确实比 12 美元的廉价充电器更安全、元件质量更高，但好得没那么夸张，不足以完全解释差价，Apple 在上面赚了不少利润。那么问题来了：有没有人在卖不带 Apple 税的高质量充电器？比如 40 美元、用料和原装一样好的？
Analemma_查看英文原文
My takeaway from this is that the $80 Apple charger is definitely safer and has higher-quality components than the $12 cheapo Chinese charger, but not nearly so much better that it solely explains the price difference, and that Apple is making a healthy margin on these things. So my question is, is anyone selling a quality charger without the Apple tax? Is there anyone making, say, $40 chargers that have the components of the real thing?
内部设计精良，但线缆应力释放处太脆弱，坏了还因超粗焊点几乎无法自行维修。
我特别讨厌他们把应力释放做得那么脆弱。我的充电线一年内就磨损了（经常进出包里、按设备暗示的方式缠绕——尽管所有人都劝别这么做）。于是我像所有爱折腾的黑客一样拆开想重新焊上，结果焊点粗得离谱，我的烙铁根本搞不定，最后只能花钱买了个新的。里面塞了那么多元件确实令人印象深刻，我只希望线缆本身能更耐用些。
agentultra查看英文原文
I really hate how weak they made the strain relief. I found mine frayed within a year of use (in and out of bags and often hastily "wrapped up" in exactly the way the device suggests one should by form... but which everyone advises against). So I did what any enterprising hacker would and tore it open to strip and re-solder the connection... only I found super-thick solder points and don't have a strong enough gun to de-solder them. Ended up just blowing cash on a new brick. I was rather impressed by how many components they stash away in these things. I just wish the cables themselves were a little more reliable. They're otherwise fine devices.
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