Birbla

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Hacker News

This is one of the coolest animation/diagrams I've ever seen, I wish they had them when I did this at uni. It sure beats whiteboards with scribbles and arrows all over it...

by lloydatkinson

Do this also for triodes/tetrodes/pentodes. I would like to explore a difference between the current (as in BJT) and the voltage (as in field transistor and valves). Currently the only thing I see is that in field transistor the stream is uninterrupted and in BJT the stream is hopping across the base.

I suppose a pentode or a valve working with the grid current is not easy to demonstrate. And I believe no electrical engineer is a real one until he groks the valve theory.

by eimrine

Some feature requests:

IsYou have an online simulator. It'slinked at the top, but I missed it. It would be nice to add a link in ech example to the example runing in the simulator.

I tried the simulator, but I can't see the moving electrons/holes. Also, in the diode simulation, how do I reverse the battery?

Isit posible to show arrows that show the total current in each electrode? Since electrons and holes have different charge, it's hard to see the current. (IIUC the simulator can show the number, but not draw an arrow. So this may be hard to implement.)

by gus_massa

For people who don't have an EE background, like myself, it would be great if for each animation you could add a small explanation for the layman. Looks very cool.

by jsmcgd

Ohhh. I have no real knowledge of electricity or electronics, but I know transistors are very fundamental so if you squint a bit, you might say this is what we set in motion when we program, or even just use a computer! Or at least some of it. Not knowing enough to benefit from it I learned nothing, and don't regret a second of that.

by customguy

- Headings w/ id= attr and a Table of Contents?

- > model vortices in superconductors or the Quantum Anomalous Hall Effect: https://news.ycombinator.com/item?id=43955906

- Nils Berglund fluid and particle sim videos: https://youtube.com/@nilsberglund

- The other day I tried having a model implement Fedi's superfluid quantum gravity for a black hole simulation in JS and then given also EHT data. I asked it to implement with R3F ReactThreeFiber and Drei (ThreeJS) and NextJS with OpenNext for the GUI and framework. I haven't yet upgraded to WASM optimization for the nonlinear fluid parts. There are parameter combinations that result in mirror-like rejection.

- (FWIU CloudFlare AI rewrote significant parts of NextJS this past year and there's OpenNext to get the full benefits of nextjs on any hosting platform)

- Another neat one to model particles of: LightSlinger antennas

- Gravity from QED, but also MHD Magnetohydrodynamics, and SQR Superfluid Quantum Relativity with a dilatant superfluid to explain why c

by westurner

Would you consider releasing these under a permissive license?

I run a (Canadian) ham radio training site[0] and would love to put them in the lessons. With attribution of course.

Edit: Oh gosh, your whole site is full of wonderful illustrations. My niece might finally get her license with these :)

[0]: https://clares.ca

by amingilani

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  • Hacker News
  • This is one of the coolest animation/diagrams I've ever seen, I wish they had them when I did this at uni. It sure beats whiteboards with scribbles and arrows all over it...
    by lloydatkinson
  • Do this also for triodes/tetrodes/pentodes. I would like to explore a difference between the current (as in BJT) and the voltage (as in field transistor and valves). Currently the only thing I see is that in field transistor the stream is uninterrupted and in BJT the stream is hopping across the base.

    I suppose a pentode or a valve working with the grid current is not easy to demonstrate. And I believe no electrical engineer is a real one until he groks the valve theory.

    by eimrine
  • Some feature requests:

    IsYou have an online simulator. It'slinked at the top, but I missed it. It would be nice to add a link in ech example to the example runing in the simulator.

    I tried the simulator, but I can't see the moving electrons/holes. Also, in the diode simulation, how do I reverse the battery?

    Isit posible to show arrows that show the total current in each electrode? Since electrons and holes have different charge, it's hard to see the current. (IIUC the simulator can show the number, but not draw an arrow. So this may be hard to implement.)

    by gus_massa
  • For people who don't have an EE background, like myself, it would be great if for each animation you could add a small explanation for the layman. Looks very cool.
    by jsmcgd
  • Ohhh. I have no real knowledge of electricity or electronics, but I know transistors are very fundamental so if you squint a bit, you might say this is what we set in motion when we program, or even just use a computer! Or at least some of it. Not knowing enough to benefit from it I learned nothing, and don't regret a second of that.
    by customguy
  • - Headings w/ id= attr and a Table of Contents?

    - > model vortices in superconductors or the Quantum Anomalous Hall Effect: https://news.ycombinator.com/item?id=43955906

    - Nils Berglund fluid and particle sim videos: https://youtube.com/@nilsberglund

    - The other day I tried having a model implement Fedi's superfluid quantum gravity for a black hole simulation in JS and then given also EHT data. I asked it to implement with R3F ReactThreeFiber and Drei (ThreeJS) and NextJS with OpenNext for the GUI and framework. I haven't yet upgraded to WASM optimization for the nonlinear fluid parts. There are parameter combinations that result in mirror-like rejection.

    - (FWIU CloudFlare AI rewrote significant parts of NextJS this past year and there's OpenNext to get the full benefits of nextjs on any hosting platform)

    - Another neat one to model particles of: LightSlinger antennas

    - Gravity from QED, but also MHD Magnetohydrodynamics, and SQR Superfluid Quantum Relativity with a dilatant superfluid to explain why c

    by westurner
  • Would you consider releasing these under a permissive license?

    I run a (Canadian) ham radio training site[0] and would love to put them in the lessons. With attribution of course.

    Edit: Oh gosh, your whole site is full of wonderful illustrations. My niece might finally get her license with these :)

    [0]: https://clares.ca

    by amingilani