The buyer’s guide to electric-car charging stations | 19mm Momentary Push Button

Anyone know a good source of information for dummies on electromagnet math? I’d love to build one of those electro magnetic pan brakes, but blindly connecting 240VAC to a coil scares me.

The leads on that TO220 case SCR and that solder trace are not going to handle 20 amps continuously without heating up. A SCR that’s up to the task of carrying 20 amps for hours on end would have a TO-218 case or even be stud mount. If all else fails you could just use a contactor relay which is what they normally use for this application.

FYI: The bare minimum requirement is AWG #20 wires for chassis wiring 11A which is what’s needed for 100W at 12V. I wouldn’t exactly call that a thick wire. While you can get away with using thinner wires fopr the AC heater, but you’ll need the wire to be able to carry the current defined by your fuse and have thick enough insulation for the voltage rating. So at the end of the day, the overall diameter for the AC heater still ended up being thicker.

As for anti-static grounding, proper setups aren’t ‘hard grounded’. For reasons of safety they have resistances in the megohm range, (usually distributed resistance), between the technician and ground.

It’s a little unusual to see an effective pixel resolution for an electronic viewfinder, but we believe the reason effective resolution is some 20% lower than the EVF’s actual pixel count is that Sony has selected an LCD with approximately a 4:3 aspect ratio, but are only using the central 16:9 aspect ratio swathe of the display. This is likely done both to match the rear-panel LCD display aspect, and also because even with this crop, the EVF already has a generous 1.1x magnification — much higher than that of most APS-C DSLRs — and a somewhat tight eyepoint of 19mm from the viewfinder eyepiece (18mm from the eyepiece frame). Were the whole display used, the eyepoint would fall uncomfortably low — it’s already just a little tight for eyeglass wearers. Thankfully, it includes an unusually wide -4 to +4 diopter adjustment range, better mitigating the tight eyepoint for those with eyeglass prescriptions inside this range. It also has a 100% field of view, and three step automatic / manual brightness control.

But this time, as I tested the 2018 Kia Niro PHEV, everything went right. I was able to drive and charge this plug-in hybrid like a normal person who has to keep it for more than a week. Full charges greeted me each morning. And, at the end of my test, some seriously impressive fuel economy blew my mind.

the scariest thing I have ever seen/been around was in a fuel terminal at an oil refinery. I couldn’t figure out why we had printers, plotters, Apple II’s and monitors dropping like flies.

HDR is a feature that’s easy to over-use, as it can quickly over-flatten the contrast of an image, resulting in a dull, lifeless photo. On the other hand, there are times when nothing else will do. I’ve shot a lot of landscape images over the years where I’ve really wished I had it; situations where there was bright sky and deep shadows, or a bright rockface but also interesting detail I wanted to capture that was in the shade. With an auto-HDR option, I often find myself trying it, but also shooting a normally exposed shot as well. I more often like the normal shot, but sometimes the HDR one is the keeper. (I really wish there were an option to have the camera capture three shots; a normally-exposed one and the the high/low exposure pair it uses to build the HDR image from. It’d be handy to be able to shoot a normal image, with the HDR shot as backup.)

Burst depth for the Sony A33 is seven Raw or Raw+JPEG frames, and 16 Fine or 20 Standard JPEG frames in a burst. That’s quite a bit less than the A55, which can capture twenty Raw or Raw+JPEG frames, while JPEG shooters can expect 35 Fine or 39 Standard-compression frames, but in our experience, the Sony A33 makes up for this deficit somewhat by clearing its buffer much faster. This means that although the A55 will get you more shots in a burst, the A33 will be ready to start another burst much sooner.

The Sony Alpha A33 accepts both Memory Stick Pro Duo / Pro-HG Duo, and SD / SDHC / SDXC media, and is powered by an InfoLithium battery pack.

There’s a lot of FUD in the comments here about extension cords (which if you know what you’re doing, you have some 12AWG SO and call it a day, 10 if it’s really dang long) and in terms of current, if you screw up and overload a plug you have a handy-dandy circuit breaker there for you. If you want to say I can’t trust that, you have other issues. I wouldn’t want to try this in a house with K&T, which I didn’t know was still so prolifically installed until I moved to the Midwest.

This certainly looks like one of the more impressive ARM-powered Windows 10 laptops we’ve seen so far. The first few devices ran on the same Snapdragon 835 chip found in Android smartphones from last year, and they showed early promise with some issues that still needed work.