Graphcore’s new AI chips are the best-looking server processors you’ll never see | 25 Amp Circuit Breaker

• Pick your features: Models come with either a recoil handle (similar to a lawn mower) or electric push-button start, and one or more outlets to plug in extension cords. Some include covered outlets, illuminated control panels or automatic shutdown in case oil runs low. Portables can weigh from 100 to 250 pounds, so you’ll want to buy a wheel kit. With the wheels installed, a generator can be rolled like a wheelbarrow into place.

However, experience tells me that this very minimal standard is not good practice. Modelling for 240V will only cause problems with the first over voltage transient or spike.

I believe two-man saws bite both directions. And if they don’t, then pretend that they do for the analogy.

Solar water heaters are nice. Sadly, when one gets far north, the sun isn’t a common sight during the cold parts of the year.

Steady in the dark. The Sony A33′s Handheld Twilight (HHT) mode uses multiple shots and micro-alignment to permit handheld exposures even in very dark conditions. This was a very dark bar scene, but the shot came out sharp enough for a 5×7 print. It could have used some exposure adjust and (definitely) a different white balance setting. Exposure is auto-only in HHT mode, but the similar multi-frame NR mode gives full control.

I think *local* distribution of DC makes some sense. We have too many wall warts in our houses. Standardized 12 volt DC power with a whole-house supply would be far more efficient. Of course, it’s not going to be commonplace in even my children’s lifetime, but…

We must also remember that just because an item is unplugged and may also of not been plugged in for a few days it can still hold a big charge in the electrolytic capacitors. Back in the 80’s I used to work for a service department in the uk called Vallances. When working on tv’s with a crt I found that crt screens that had not been plugged in for a week or two could still hold a big charge and the first thing I did was to short the tube to discharge it. I also remember one of the older engineers working on an old valve radio which was unplugged at the time, suddenly there was a bang and a big cloud of smoke and a very stunned engineer. All I an guess is that an old electrolytic capacitor was shorted and exploded. So remember when something is unplugged it can still be very dangerous, more so with microwave capacitors.

Sega also announced that it was working with a Japanese developer to review the design and software for the console. It’s not clear if this news means that AtGames, the US company behind the poorly reviewed Genesis Flashback console, is still involved in the project as it was originally announced. It seems that AtGames has deleted the original Facebook post from April that announced that the Mega Drive Mini would be powered by its hardware.

Did your kitchen light stop working soon after the closet light? Did you change a light switch last month? Facts about recent electric changes in your home could lead me in the right direction, so it’s helpful if you can list them up front. (Don’t miss these 41 secrets home inspectors won’t tell you.)

I had three electrocutions with mains voltage in about one hour. It was a dark and stormy night, when I decided to try again building my own half-bridge SMPS which had tendency to explode whenever I plugged it in. It was made of two boards: one contained EMI filters, bridge, fuse and HV electrolytic capacitors, other had high-side controller, transistors, transformer and everything else. When another transistor decided that it would rather choose new Pope instead of working, I got a bit angry. I grabbed something to drink in kitchen, returned and grabbed the board in order to smash it against the wall. I forgot to unplug it first. Ouch. Half a hour later, it was still dark and stormy night, I attempted to fix an ATX supply. When I was grabbing something from behind of supply, I touched the board with my forearm. Supply was plugged, of course. Ouch. Half a hour later, yes, it was a dark and annoying night, I was still working on the ATX supply. I unplugged the supply and was inspecting the traces, my nose and lower lip brushed solder pads of those two big caps that were charged to ~320V. I went to bed with my face hurting…

[Nick Sayer] falls into the “would rather build it than buy it” category. This particular project is a clone of a fast electric vehicle charger. There are commercially available versions sold under the Quick 220 brand name. The idea is that for fast charging, some electric vehicles call for a 240V outlet and Americans without electric cars often don’t have one. If they do it’s for an appliance like a stove or clothes dryer and probably not found in the garage.

I haven’t seen you around the traps here before and you have put in a good effort so welcome aboard.