How to Fix a Broken Air Conditioner | 220v Contactor Relay

It turns out that the live viewfinder image doesn’t cover the full screen in 3:2 aspect mode, but is normally confined to roughly the central 80% of the available display area. When you switch to the Fn menu display, though, you need to press your eye pretty close to the viewfinder eyepiece to be able to see the menu items on the left and right sides of the screen. I found that with my eyeglasses on, I had to shift my eye to the left or the right to see the menu entries on the sides, or else really mash my eyeglasses against the eyecup. Switching to 16:9 aspect ratio expands the image to fill the left and right of the EVF’s LCD as well, which is also problematic for eyeglass wearers.

FreeSync is available on the NU8000, Q6FN, Q7FN, Q8FN, and Q9FN. Once you’ve installed the latest firmware on one of those TVs, you can find it under Game Mode in the settings menu.

Heater might be pulling 22 A when hot, but on power up … likely much more. Think about incandescent lightbulb or electric motor, for example.

The varistor’s absorption of the transient energy during a surge event produces localized heating within the component, which eventually leads to its degradation. If left unprotected, the degradation of a varistor can increase heating and thermal runaway. As such, a growing number of varistor-based surge-protection devices offer a built-in thermal disconnect function. It provides added protection from catastrophic failures and fire hazards, even under extreme circumstances of varistor end-of-life or sustained overvoltage.

Maximum video length is 29 minutes or two gigabytes per clip, whichever limit is reached first — although if SteadyShot is enabled, this limit is slashed to just nine minutes per clip, likely due to sensor heating issues when using the sensor-shift stabilization mechanism. Full HD videos are recorded using 17Mbps AVCHD compression, while the lower resolutions are saved with MP4 compression, at a bitrate of 12Mbps for 1,440 x 1,080 pixel video, or 3Mbps for VGA video. Movie capture is started and stopped with a dedicated Movie button located just to the right of the electronic viewfinder, within easy reach of a thumb press.

They’ve lifted 200kg so far, and it looks like a pretty cool addition to a shop already packed with other builds, like their MOT spot welder and a propane tank sandblaster.

Can you please tell me the minimum creepage and clearances between the low voltage and mains side by your standards? How have you done the measurements and decided is not enough? I’m more than happy to hear the story. Ans also again…did you hear about conformal coating and what’s for?

people remember “the good old days” and they forget all about the horrible accidents and fires and massive death that came from ignoring fire regulations

Not at all. One lumberjack pushes while the other pulls, and they’re both pushing and pulling against the ground. It’s fits perfectly.

I have pulled this hack in a pinch with specific pieces of test equipment, etc. (usually large power supplies) in non-residential settings but instead of having a snazzy box I would use one extension cord and my trusty Fluke and sort it out. In that application, the circuits were almost always dedicated (or near-dedicated), but in a residential setting, there are still many circuits that are rarely loaded much if at all, and I see this as working perfectly fine for those times.

Low voltage DC distribution makes sense in some cases. 12V is pretty low, though: copper losses are still high, so the amount of copper required is expensive for house-scale. 48V uses one sixteenth the amount of copper, and still is below the shock hazard limit. 48V rack systems are mature, common and are a great idea.

For a more detailed explanation of how to match MOVs to applications, check out the “DC Application Varistor Design Guide.”