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

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  • Cooking rice is a notoriously hard problem (and for that reason I recommend noodles instead) but my tip is:

    • Don’t (!) do the 2:1 thing where you mix 2 cups of water with 1 cup of rice. Some of the water will boil off and the ratio will be distorted, except if you close your cooking pot, in which case it begins to foam like crazy and give you something to clean up
    • Do just fill a large pot with lots of water and make it boil; then when it boils add the rice and cook a certain time with the pot open. I’ve made the best rice this way.











  • 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.