Nokia’s banana phone from The Matrix is back | 19mm Momentary Push Button

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.

Wikipedia states most of mainland europe is on TN−S. “This arrangement is a current standard for most residential and industrial electric systems particularly in Europe”, if thats wrong, someone should fix it, preferably someone who has a authoritive position and can quote standards https://en.wikipedia.org/wiki/Earthing_system

[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.

And the MOC3041 can not handle a 1 amp load, “Peak repetitive surge current” is what it can handle for 0.0001 seconds at every 60Hz cycle before getting (possibly) damaged. The continuous load limit is far less than 1 amp.

– Use isolated differential probes to measure high voltage. – Use current clamps or current transformers to measure current. – Put bleeding resistors in any big capacitor in your circuit. – Don’t change the position of the probes in the power circuit without power everything down. – Don’t work with high voltages alone. – If there’s more people involved in your experiment, block any circuit breaker, button or at least put some signs to prevent people from turning them on while you are messing with the circuit. Paranoids may even ground things while they are playing with the installation to direct the current to the ground in case someone makes a mistake.

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With 12/24V, the resistance is low enough that it can be done using copper traces on PCB. P=V^2/R, so the resistance needed to be increase by 100 times for 12 to 120V. The traces gets a lot thinner and longer.

The first was when I was a wee, messing w/ a big 24v motor w/ weight (read: kickback voltage as it spools down && lots of amperage) and I turned it on w/ my hands on both leads…

I learned British version of English, but my accent is all over the place. I also speak a bit of Spanish, Portuguese, Latin and a tiny bit of German. I can swear in Russian too, because my wife knows that language. And don’t forget my native tongue, which is Polish.

You can use mains voltage if it involves already approved/CE-licensed parts that are simply wired together such as a power supply to a circuit board, but if you design and build your own part with 120 V inside, it’s on your head when the house burns down.

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.

The issue with the DC heated beds seems slow temperature rise. Some bigger builds and beds need a quicker heatbed heater. (In my opinion not needed for PLA) Only for ABS.