Xiaomi Mi Mix 3 announced: specs, features, price | 25 Amp Circuit Breaker

In my experience, the more people know about electricity, the more cautious they are. And the more they have to deal with dangerous voltages, the more cautious they are. With few exceptions, most Youtubers you see doing dangerous stuff online have no idea what they are doing. Speak to a decent electrician and you’ll see they work more safely than most engineers and thousand time safer than amateurs. We don’t really need electrical cowboys showing off how dangerous the stuff they do is.

It’s a great idea but a shame it isn’t laid out correctly, The traces on the low voltage side of the opto-couple are too close to the mains voltage and also the trace from resistor R8 to the opto is too close as well.

Nissan has said that most people who get their LEAF charging stations installed by AeroVironment will pay around $2,200 to $2,500 in hardware, permits and labor—$750 of which is for the actual charge station hardware. While the pictures are interesting in-and-of-themselves for those of us that care about what happens under the hood of all of our equipment, the bigger question the pictures bring up is what, exactly, you’re paying for when you plunk down your $750 for the hardware.

I don’t know who all of you people are, but stop being ridiculous. This guy made an ESP8266-based TRIAC switch, and gave the design away for free. He has ample warnings on his web page about this project. I encourage anyone who wants to use this design to research the subject thoroughly to make sure they understand what they’re doing.

Cooking Triac? In my experience there are only good Triacs and bad Traics. You can tell the bad Triacs because they usually have a a little bit of plastic encasing still attached to the three legs after they have exploded.

There are split-phase premises supplies and three-phase. Split-phase is used for residences and small businesses, and three phase is used for larger businesses and some larger multi-tenant buildings. When using two of three phases, they’re 120 degrees apart and the nominal voltage is 208 volts. When using both sides of split-phase, the two are 180 degrees apart and the nominal voltage is 240 volts. The nominal voltage from one phase to neutral is 120 volts.

All of the wire in the high current path is 10 gauge wire that was cut from SOOW cable, so it is, indeed, rated for 600V. In addition, it has 105 degree insulation, which means that it’s actually good for more than 30A. But it’s largely moot since the NEMA 5-15 plugs would only ever be found on 20A circuits (and even then, they likely wouldn’t be dedicated).

On Wednesday, Flake voted against advancing controversial nominee Thomas Farr, a North Carolina lawyer who is up for a district court spot, during a Senate floor vote. And since then, Judiciary Chair Chuck Grassley canceled a committee meeting that would have included votes on more than 20 judicial nominees, apparently due to Flake’s key vote in committee.

A few people made some useful design suggestions. I like the Power Integrations LNK switch suggestion for power. I’d also recommend looking at the SR086, which does the same thing — but it’s inductorless! That’s the chip I’m using for my ESP8266-based WiFi dimmer.

Stone (Bronze?) Face Human facial expressions can be incredibly fleeting; High shooting speed can help in places you might not expect.

This. An isolation transformer can be a very useful thing, but also very dangerous. If you touch ONE end no problem, but if you touch both ends you will get cooked and the RCD will NOT trip. Or more directly: An isolation transformer does NOT allow you to switch off your brain! And NEVER connect a scope to such a transformer.

True enough; This hack goes back decades floor finishers who have large floor sanders use this hack to run their large sanders.