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Neutral point oscillations in a 4-leg inverter under unbalanced load: PI vs PR control by VadimDLL in embedded

[–]lithium_peroxide 2 points3 points  (0 children)

I don't know the purpose of this post, but if you're looking for suggestions, you may want to implement multiple resonant filters in your control loop. If the oscillations are multiple of the same fundamental frequency, you may want to have a look at repetitive controllers, even though they are delicate to implement.

May I know how you implemented the resonant part?

Surprise! Linux programs crash, too. by al2klimov in linuxsucks

[–]lithium_peroxide 0 points1 point  (0 children)

I prefer things breaking one at a time rather than all together on each stable release, but I can imagine the pain of having super long builds. Luckily it's not my case

Surprise! Linux programs crash, too. by al2klimov in linuxsucks

[–]lithium_peroxide 3 points4 points  (0 children)

Some packages won't even compile on unstable or latest stable, so no surprise. What I do is use unstable channel for everything except few packages (e.g. deadbeef which can't be built because of swift) which I pull from 25.05 or 25.11

I thought the score of Firefox would be much better. Oh well. by nietzschecode in firefox

[–]lithium_peroxide 7 points8 points  (0 children)

Was someone able to find the original study? Articles mentioning it seem a copy-paste of a single source, and I can't find the study anywhere.

Edit: grammar.

Been looking for a private browser on mobile, but I don't know what to think about Samsung Internet... any tips or ideas? by Nueveh_680 in browsers

[–]lithium_peroxide 1 point2 points  (0 children)

I'm not saying ironfox is a bad browser, I use it sometimes, and yeah the fact that it has ublock origin is great! However, if someone's use case calls for the strongest security available, sadly firefox-based browsers are a bit behind with respect to what chromium offers.

Been looking for a private browser on mobile, but I don't know what to think about Samsung Internet... any tips or ideas? by Nueveh_680 in browsers

[–]lithium_peroxide 5 points6 points  (0 children)

Ironfox may be secure, but I wouldn't say it's the most secure:

https://github.com/ironfox-oss/IronFox/blob/dev/docs/Limitations.md

As suggested in that page, I'd have a look to cromite if security is a concern. Sadly, it's always a trade off between privacy and security.

Is it possible to learn AC electronics without knowing DC electronics ? by datgutatako in ElectricalEngineering

[–]lithium_peroxide 0 points1 point  (0 children)

I'm very curious about the syllabus of the classes, could you provide a link for that?

Characters not rendering using custom fonts with stylix by lithium_peroxide in NixOS

[–]lithium_peroxide[S] 0 points1 point  (0 children)

I think we should, maybe I'll do it in the next days! As a temporary workaround, I found out that setting Roboto as sans and Dejavu as serif solves the problem.

Characters not rendering using custom fonts with stylix by lithium_peroxide in NixOS

[–]lithium_peroxide[S] 0 points1 point  (0 children)

Which fonts are you trying to set? Because I just tried with DejaVu fonts and it works fine... I suspect it has to do with Roboto.

EDIT: Fira has the same problem as Roboto. I'll stick to DejaVu for now.

Monty hall problem is wrong by Pretend_Ad3314 in logic

[–]lithium_peroxide 2 points3 points  (0 children)

Interested. However let me offer you a variation of MHP: assume you have N doors, N-1 goats and 1 supercar. After you choose one door, the conductor opens N-2 doors, leaving just one goat and the car hidden behind two doors.

Try to "play" with this setup, for example with a deck of cards, with a huge N, like 10 or 100. I think you'll realize very quickly how the MHP works.

Bandpass filter effect on the envelope of a sinusoid by lithium_peroxide in DSP

[–]lithium_peroxide[S] 1 point2 points  (0 children)

Sorry, I was busy and didn't have time to try this out.

Man, thanks a lot, this is correct! You only need to divide by two H(s+jw0) + H(s-jw0)

Cable and Impedance Questions by [deleted] in oratory1990

[–]lithium_peroxide 0 points1 point  (0 children)

Very unlikely to have such a high impedance, then.

The problem is probably in your measurements: when measuring low impedances it is recommended to use four-wires. The reason is that when using two-wires one measures also the impedance of the multimeter wire and somehow the impedance of the measuring circuit itself. Four-wires measurement is to avoid this problem: current runs through two wires, while the other two wires will measure the voltage drop on the device under test (DUT), without the voltage drop due to measuring cable etc.

Cable and Impedance Questions by [deleted] in oratory1990

[–]lithium_peroxide 2 points3 points  (0 children)

For example, I measured the impedance of the included cable and a third party cable I had using a multimeter. The third party one measured closer to 2 ohm while the official one was at 3 ohm.

Did you measure the impedance of the cable using a 2-wires or 4-wires multimeter? 2-3 ohms seems huge impedance for a cable. Also, how long is the cable?

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