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Joined 3 months ago
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Cake day: June 10th, 2024

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  • I disagree. There’s a lot of reasons why people don’t have children, including:

    • emotional devastated youth (abandoned by parents, addicted to smartphones, misunderstood by society)
    • people can’t find partners for this reason
    • too much stress from too much work
    • wages are barely keeping up with inflation, and I project they will in fact not keep up in the long term in the US due to missing labor protections and decreasing demand for labor.
    • rising cost of living because politically, nobody really cares about the population.

    edit: sorry i realized i made these points US-specific but you were talking about russia, sorry.










  • Thank you for this well-thought and balanced viewpoint. It took me 19 days to process all the information.

    So basically, I was wrong when I assumed that inverters had an efficiency of around 50%. That misunderstanding comes from the phrase that “filters in the inverter eliminate high-frequency components in the PWM’s output”. I thought they discard that power. But that’s apparently not the case. So the efficiency is more like >95%. So that’s good.








  • I’ll give you a short introduction to the power grid (btw. it’s called “stromnetz” (electricity network) in german). The power grid has many “levels”, where each level represents a network of cables that transport current at a given, specific voltage. For example, you might have one 220kV level, and then a 5kV level, and a 230V end-consumer level.

    Between these levels, there have to be translations. These are “transformers” today, transforming high-level AC into lower-level AC or the other way around. For AC networks, they are basically a ring of iron and a few coils. However, for DC networks, other transformers exists, such as Buck/Boost converter.

    My question basically is: is there anyone who can give me experimental data on how well DC networks would work in practice? Personal experience is enough, it doesn’t have to be super-detailed reports.


  • All that aside yes in the future there’s probably going to be a high voltage DC network in Europe. Less so for private consumers, at least not in the foreseeable future, but to connect up large DC consumers, that is, industry, with DC power sources. If you’re smelting aluminium with solar power going via AC is just pure conversion loss.

    Thank you, that was exactly what I was looking for. I know about aluminum production processes, and that it requires large amounts of DC power.