user134450
@user134450@feddit.de
- Comment on I'm loose bottom, tag yourself 8 months ago:
theculturetrip.com/…/11-german-places-with-incred…
Not as long as OPs but has some real goodies.
- Comment on xkcd #2907: Schwa 8 months ago:
Maybe those were illegal smoke and honey melons 🤔
- Comment on Why is it dangerous to chain power dividers? 8 months ago:
Other commenters have pointed out the problems with overloading of connectors and reduced efficiency because of the added resistance but there is another really important reason not to chain power strips: circuit breakers work best against short circuits when the resistance between the breaker and the short is fairly low (for instance less than 0.5Ω) so that the current will quickly go over the rated current of the breaker. If the resistance is a lot higher because you have too many extensions between the breaker and the fault, the time the breaker needs to react will go up. Counterintuitively this usually means more energy will be turned to heat by the fault.
In extreme cases this can mean the difference between a broken power strip that you can just throw out and a burned down house.
- Comment on They hadn't even evolved into secretary birds yet smh 9 months ago:
downvote for lack of feathers. smh.
- Comment on What’s a “sovereign citizen “? 9 months ago:
that sounds almost exactly like the Reichsbürger in Germany. They also claim the current German state is actually just a corporation and the laws of the German empire are somehow still applicable. They also create their own passports. And of course they are deeply interconnected with Neo-nazis.
- Comment on Making a PDF that’s larger than Germany 9 months ago:
you mean turing complete?
- Comment on Adjusting SMPS output voltage 1 year ago:
skipped reading the silkscreen … it says Q1 on the lowermost package but the other three are diodes. so could also be a forward converter or something similar.
- Comment on Adjusting SMPS output voltage 1 year ago:
indeed it looks like a Royer oscillator in there (because there are transistors before AND after the tranformer).
- Comment on Where did the abbreviation "w/" for "with" come from? 1 year ago:
click on the link pls
- Comment on Where did the abbreviation "w/" for "with" come from? 1 year ago:
“ἰχθύς” is the ancient greek word for “fish” en.wiktionary.org/wiki/ΙΧΘΥΣ
- Comment on Where did the abbreviation "w/" for "with" come from? 1 year ago:
yes indeed. i keep being confused how email can still suck so much sometimes when it had decades to mature.
- Comment on Where did the abbreviation "w/" for "with" come from? 1 year ago:
yeah this is a real pet peeve of mine.
In German many people, web mailers and also sometimes even email software use “AW:” (short for AntWort) instead of “Re:” and then some of them don’t even recognize the existence of a previous “AW:” or “Re:” giving you such wondrous email subjects as: “AW: Re: AW: Re: AW: AW: Re: AW: Re: really important subject” 🤦
- Comment on Where did the abbreviation "w/" for "with" come from? 1 year ago:
you h2e it?
- Comment on How to Dimension a Power Supply for an Audio Amplifier ? 1 year ago:
Acording to the datasheet the TDA7294 uses -V~s~ and +V~s~ in the block diagram so i would assume it is intended to be used with DC power. If the module is specced for use with AC as well as DC, then this just means what you already suspected: it has an integrated bridge rectifier and most likely some sort of low pass for the rectified power (read: a bunch of big capacitors).
You could just go with a big transformer core that powers them all at the same time; many commercial amps do that and it works fine in general, provided you have enough margin for power spikes and the modules will not influence each other when connected in parallel to power.
In my opinion using separate transformers would be paranoid but it would work of course.
- Comment on New Vaccine Can Completely Reverse Autoimmune Diseases Like Multiple Sclerosis, Type 1 Diabetes, and Crohn’s Disease 1 year ago:
Looking at the price per kWh for commercial batteries tells me that we are seeing the battery revolution right now.
Graphene is already commercially used in some applications:
There are already very effective cures for some types of cancer (note that the differences between the many types of cancer can be huge and so the effort and time needed to create cures will also be very different. some treatments also are effective but not completely understood yet, like for bladder cancer)
Nuclear fusion devices are commercially used in material analysis (mostly for semiconduction industry and ore processing). There are different types in use – some even use thermonuclear fusion on a small scale.
It all seems like super crazy supercoducter level tech until it becomes mundane and part of peoples lives … then we stop noticing how amazing it really is.