Xiaomi Mi Mix 3 announced: specs, features, price | 220v Contactor Relay

The run and start capacitors provide the phase shift for starting torque because their capacitances add up when wired in parallel. In fact, both capacitors are wired in series with the start winding and in parallel with the run winding.

TJ may also want to mention on his project page that without a choke, the TRIAC will dump out a ton of EMI (that’s why most commercial dimmers have to have a choke in series with the load to be able to get FCC certification).

You can burn your house down in many different ways. Knocking over a poorly placed candle, or dropping a napkin on the electric stove are much more likely than a fault in the wiring, and the insurance company will pay out just the same. They would have to show that you were grossly negligent.

In case you hadn’t noticed, 2010 is the Year of 3D in the HDTV space, and all the television makers are rushing to add 3D capability across their product lines. Sony has come up with a clever way of capturing 3D images using the same "sweep" technology as in their normal 2D panoramas. As the camera is swept across a scene, it will naturally see various parts of the subject from slightly different angles at different points along its sweep. Sony’s engineers have taken advantage of this to add a 3D Sweep Panorama mode to a number of their cameras, the A33 and A55 included. While the 3D data is apparently stored in a fairly standard file format, viewing the 3D images currently requires connecting the camera’s HDMI output to a Sony 3D-capable television set. Sony’s promised 3D Sweep Panorama playback support for their PS3 game consoles, supposedly coming as early as this September. That’s still a bit limiting, but hopefully as 3D technology matures, various manufacturers will be able to read each others’ 3D formats.

But 110/120v A/C? that stuff is baby-play, as long as you realize that you shouldn’t use both hands, or use grounding straps, it just kinda buzzes, I’ve played around with TENS devices that had more (felt) kick than it…

For the person who jumps up and says “coatings insulate the water from the trace”, well no it doesn’t, we are talking about AC voltages and water that has formed over a large trace (even insulated) forms a capacitor that will conduct AC even when you have a DC insulation. Even if it did you then still have the exposed solder pads.

MOVs are rated for specific ac-line operating voltages. Exceeding these limits by applying a sustained abnormal overvoltage condition could result in overheating and damage to the MOV.

What we can say for now is that the new Corolla has taken a giant step forward, and that in terms of cabin quality and refinement, comfort and dynamic capability it is up there fighting among the very best. Likewise, you would hope, Toyota’s famed reputations for both reliability and customer service should continue to add credence for buying one.

Once upon a time, must have been 13 or 14 at the time, was doing the annual find the blown bulb in the christmas tree lights. Must have completed said mission and marvelled how the bit of cable at the middle/end of the lights was hidden within insulation tape (lights must have been 20 or so years old, this was in the 90s) and the curious being that I am thought let’s see what the tapes hiding – obviously bare wires.

Temperature swing in the water heater may be about 50K, incandescent bulb filament temperature swing is closer to 3000K. I doubt there is much variation in the resistance of the water heater’s heating element

But don’t believe brand names are any better, especially if you buy them from eBay or Amazon! There is too much profit to be made remarking parts to trust any of these type parts from anyone but a major distributor like DIGIKEY or MOUSER Electronics.

NEC article 440 was added because air conditioning and refrigeration systems are different from typical loads, like lights and heaters. Air conditioner compressor and fan motors are largely inductive (magnetic) loads and have different characteristics than purely resistive circuits. Article 440 has specific guidelines for HVAC and refrigeration equipment manufacturers to follow when writing the equipment data tags as well as for electricians when sizing conductors.