Tencent Digital (Ben) Many people do not buy 12-inch MacBook or new MacBook Pro (such as me) because of interface problems. Yes, I can't imagine I need a converter when I want to use the laptop to charge the iPhone 7 Plus. I can only say that this experience is not what I want.
However, Apple does not seem to mind, because there are still many users will buy new MacBooks and converters. Of course, this idea has also been recognized by some critics and the media.
For example, Thenextweb believes that USB-C is actually the best computer interface ever. The reason is simple: it is as small as a micro USB, can be plugged in anyway, can transmit audio quickly, and is extensively inclusive to integrate Thunderbolt 3 compatibility for data throughput up to 40Gbps.
Best of all, you don't have to think about it. The USB-C interface can be plugged in and you'll plug it in. After a while, you'll love it.
Of course, USB-C is currently faced with "growing troubles." Because it is not universal, adapters are necessary. For example, if you are an iPhone user, you need to purchase a USB-C to Lightning. If you are an Android user (the mobile phone is a micro USB), you also need a corresponding converter. Most importantly, many computers only have a USB-C (such as a 12-inch MacBook), so you must buy a Hub, otherwise the U-disk will not be used when the laptop is charging.
Buying various USB-C adapters is also a small price
On the positive side, USB-C can replace a variety of interfaces, such as 3.5mm, USB-A/B, micro USB, HDMI, or Mini DisplayPort, as long as all computer and accessory manufacturers agree to use only USB- C standard, this is undoubtedly a long process.
I do not deny that USB-C will become the trend of digital devices in the future, but it will not be completely universal in one or two years. So, I think I still need the standard USB, even if I want to distinguish anyway, after all, computers, mobile phones are consumer products, investment for USB-C is not an exaggeration? I respect the views of Thenextweb, but I also reserve the right of my choice.
Source: thenextweb
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Applications:
The grounding transformer is a kind of auxiliary transformer that used to offer an earth point for the Delta-Star system. They are typically used for providing a path to ground for unbalanced load current and for fault currents on system where a suitable ground is otherwise not available.
Design:
The grounding transformers are generally designed with one of the two configurations: Zig-Zag (Zn) with or without an auxiliary winding or a Wye (Ynd) with a delta connected secondary. The Zig-Zag connection is preferred as it is more cost effective and have smaller size than the Delta-Wye unit. For more safety, neutral earthing resistors (NER) are often used in conjunction with the grounding transformer to limit neutral ground fault current magnitude. The rated voltage of the NER should be equal to the line to ground voltage of the grounding transformer. The current rating and duration should match the grounding transformer
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