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本帖最后由 hwckent 于 2025-11-26 14:20 编辑
发一段diyAudio成员对《ELEKTOR》杂志的评论，避免盲目跟风！同理，对于本论坛坛友只发电路图的同样适用，很多都是道听途说转发的，尤其没仿真文件的！跟风需谨慎！
也许我与《ELEKTOR》杂志的经历能让你更理解这些问题。
上世纪七十年代起（大概从1975年开始），这份杂志曾是我的主要信息来源之一。我持续收集了大约25年的每一期杂志。
我和几个朋友制作过许多他们的音频项目，但几乎总是遇到设备无法稳定工作或根本无法运行的问题。当时功放电路的振荡现象被视为常态，需要自行解决。由于示波器在当时稀有且昂贵，许多人甚至从未察觉问题，只是定期更换新的高音扬声器。
多数情况下，杂志后续刊会发布修正说明，通常这样开头："可能由于电子元件质量差异，部分读者在制作本项目时遇到些许问题……"随后附上的修复方案有时能解决问题，但大多无济于事。
尽管令人沮丧，这段经历却推动我以极高精度和细致态度进行电子制作。因此设备故障绝不可能是我的工艺问题。曾有位专业电子开发人员来访，他不相信我的手焊电路板能达到如此水准。
当《ELEKTOR》的项目无法工作时，我甚至曾斗胆致电开发人员——在那个年代虽然可能但通话费用高昂。由于我记者父亲的电话账单本就是天文数字，我也就无所顾忌。
这让我洞悉了《ELEKTOR》的运作模式：他们接收来自不同开发者和爱好者的项目投稿，若决定发布，仅支付极低报酬（爱好者无酬劳，开发者微薄稿酬）用于拍摄照片、绘制电路图/PCB及撰写文稿。当时酬劳还不足三位数的德国马克。
这些项目在发布前，《ELEKTOR》编辑部从未进行实物搭建或测试验证。偶尔他们会收到测试样品，但音频项目最不受重视，数字设备和测量仪器则获得更多关注。顺便提一句，杂志编辑部自行开发的很多项目仅停留在图纸阶段，从未按发布方案实际制作过。
外部开发者撰写的许多关键内容常因版面限制被编辑删减。
这一切始终（至今仍是）关乎杂志和PCB的销量，而非产品质量或方案可行性。他们无需为错误指导承担责任——总能将问题归咎于制作工艺差或元件质量低。在那个没有互联网的时代，制作者之间几乎无法交流。这套运作模式竟延续数十年。自然，他们也不会为辐射超标问题负责（按他们的设计可能导致其在欧盟国家面临巨额罚款）。D类功放就是典型例子。
所以，如果你制作的《ELEKTOR》项目无法运行或存在明显设计缺陷，这并非特例。要知道，当时我们连仿真软件都没有！若你考虑制作《ELEKTOR》的任何项目，请优先寻找替代方案。他们提供的设计无一能与当下diyAudio论坛及业内人士提供的精良方案相提并论。
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原文:
Hi, maybe my experience with ELEKTOR will make these problems more understandable for you.
Elektor was one of my major information sources many years ago (think from 1975 on). I collected any edition for 25 years or so.
Me and some friends build many of their audio projects and allmost always we had problems with them functioning reliably or at all. Oscillation of amps was considered something normal, you had to fix it your self. Osciloscopes were rare and expensive at that time, so many did'nt ever notice and simply bought new tweeters on a regular base.
In most cases further editions of the magazine had corrections in them. They usually started: "Probably to differences in quality of electronic parts, some readers building this project experienced some minor problems...". Followed by some bug fixes that sometimes cured problems, in most cases not.
Even as this was frustrating, it pushed me to building electronics with highest precission and care for the last detail. So my build quality could not be the cause for missfunction. I once had an professionel electronics developer visiting me, who did not believe me to have soldered my PCB`s by hand.
Sometimes, when an Elekor project didn't work, I was so brazen to make telephone calls to the developers, which was possible at that time, but expensive due to high communications cost of long distance calls. As my father, a journalist, had an astronomic telephone bill anyway, I didn't care.
That made me understand how ELEKTOR worked: They got projects offered by different developers and hobbyists. When interested in publishing, they got paid no (Hobbyist) or very little money (Developer) to do some Photographs, schematics, PCB etc. and write a text about the build. We talk about very low 3 digit German Marks at that time.
Then projects got published without the ELEKTOR staff building or testing any of these for verifying them working reliable. Only sometimes they got a sample for testing. Audio projects where considered lowest value, digital stuff and measuring equipment got more attention. By the way, many of ELEKTOR's staff own developnets where only done on paper, never build at all as published.
Often important, critical parts the external developer wrote, were edited out to make it fit page size.
It was (and is) all about selling a magazine and PCB's, not highest quality or 100% working products, as there was no way to make them responsible for their faulty advice. They could blame allmost any problem on bad build quality and low quality parts. Then, there was no Internet, so hardly no communication between builders. They got allong with that sheme for decades. Of course, they take no responsability for radiation problems, which are caused by following their plans and can cost you a fortune in EU countries. D-amps anyone?
So if your ELEKTOR build does not work or has obvious design faults, this is not something extraordiare. We did not even have any software at that time, remeber! If you consider building any ELEKTOR stuff, look for an alternative first. Nothing they offer is even comparable to todays refined DIYS stuff we get from diyAudio and people being present here.https://www.diyaudio.com/communi ... elektor-amp.405636/ |
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发表于 2025-5-29 07:29
楼主
多谢指教！ 做工漂亮！
