37 Comments

  1. Finally! This absurd obsession with miniaturization has gone on long enough!

  2. For those wondering, probably closer to 20uH if you assume 6 turns, a total length of 1.5 meters, a coil radius of 0.5 meters.

  3. What voltage is it rated for though?

  4. **It is closer to 6uH** and could certainly handle a lot of RF current.

    Inputs: 6 tursn, 0.3m radius, 2m length.

    [https://www.omnicalculator.com/physics/solenoid-inductance](https://www.omnicalculator.com/physics/solenoid-inductance)

  5. Well, still better than the custom jobs we used to do at my previous job…

    https://imgur.com/gallery/vFx40Pb

  6. Turkey. Probably in Üsküdar, just east of Istanbul, on the Asia side.

  7. You should see the secondary!

  8. The welds don’t look military grade (my pop was a steamfitter at Oak Ridge, TN WWII).

  9. Purely an amateur but is that metal fence going to cause any capacitance issues? Seems a bit close

  10. “right off the ground”

  11. It looks like it’s connected to a ground plane on both ends.

  12. All my life I always thought the coils where the coolest part of any board I ever saw.. I have been taking shit apart for 39 years now. Transformers are cool too

  13. Ya build yer own vape coils, brah?

  14. DIY-audiophiles would totally go for this.

    Here is an example of a cast copper capacitor.

    https://www.partsconnexion.com/DUELUND-81949.html

    There are bigger ones out there that run into the thousands.

  15. The nearby fence will load it somewhat. I see a number of shorted turns.

  16. My vote is its a 0.01 GW filament.

  17. u/playako Türkçe tabela :d

  18. That would make an impressive induction heater

  19. Aaaand as per usual it’s almost useless for actually locking your bike.

  20. You are not supposed to ground both ends 😐

  21. Now say that in Turkish

  22. Someone actually needs to go there with some crock clips on the nuts/bolts and put it in circuit to make it do something.

  23. I have a feeling it works better as a resistor than in inductor

  24. Lightning bolt ready

  25. In Turkey? I dont think so. That is a bike parking place.

  26. That’s not far off the coils used in some [radio transmitters](http://j-hawkins.com/wlw/wlw6.jpg). (Output coupling)

    [2nd harmonic filter](http://www.rfproof.com/WLW_SECOND_HARMONIC_FILTER_INDUCTOR.jpg)

    These are from WLW, the old 500KW transmitter.

  27. Rated for high current though

  28. that one is 4cm in diameter

  29. It is from the Tesla laboratory in Boulder Colorado

  30. *(Wrong… I’m using it as a resistor)*

  31. I bet you could run some serious current through that inductor.

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