user134450

"ἰχθύς" is the ancient greek word for "fish" https://en.wiktionary.org/wiki/%CE%99%CE%A7%CE%98%CE%A5%CE%A3

yes indeed. i keep being confused how email can still suck so much sometimes when it had decades to mature.

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" 🤦

you h2e it?

i think the mine was successfully removed. so, mission accomplished?

just found this post: https://mstdn.social/@deaidua/111308908881071433

so they are possibly Sonobot 5's

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.

Edit: dont forget that this thing will produce heat. If you really go with an 800W transformer then you have to be able to cool about 400W in the worst case (going by the data sheet power dissipation of the chip and assumed transformer + rectifier efficiency of 90%).

picture of a Swedish general

i guess dalle only knows American uniforms :)

Bullets are made of lead

for the military: not anymore. lead for bullets is only used for hunting nowadays and even there it is banned in many countries (being replaced by copper or zinc instead). the core of military small arms projectiles is usually steel or a special penetrator (i.e. tungsten)

Tatsächlich ist das vermutlich das geringste der Probleme. e-Fuels werden mit 99%er Sicherheit durch Fischer-Tropsch-Synthese (FT-Synthese) aus Synthesegas hergestellt werden und deren Produkte haben eine deutlich andere Zusammensetzung als erdölbasierte Raffinate. Ein Marker den man relativ leicht messen könnte wären vermutlich die zyklischen Kohlenwasserstoffe und speziell Stoffe wie Toluen; diese kommen in Benzin natürlich vor aber bei der FT-Synthese werden sie kaum anfallen (unter Nachweisgrenze). Sensoren für beispielsweise Toluen gibt es bereits.

Das Hauptproblem ist das der Preis selbst im optimistischsten Scenario unter Ausnutzung wirklich aller verfügbarer Synthesegasquellen (Biomasse, erneuerbare Energien, Industrieabfälle…) sich derart gestalten wird das keiner damit seinen PKW betanken wird außer vll. Millionäre.

Fichterische Dreiheit

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 in the semiconductor industry and in ore processing). There are different types in use – some even use thermonuclear fusion on a small scale.

It all seems like super crazy superconductor level tech until it becomes mundane and part of peoples lives ... then we stop noticing how amazing it really is.