RF tutorials - Understanding and building a VARIOMETER

[@jonathanlister5644]

Absolutely brilliant! I thought I understood inductors 'till I watched this, thanks.

[@isaiahnelson3643]

Subbed. This was a concise and cogent explanation for a topic in amateur radio I was recently reading about but didn't understand until this video. Keep the content coming!

[@cricket1043]

Excellent presentation, thanks!

[@manuellongo4365]

Always interesting and informative videos - I am now well past tinkering with electronics but still interested.

[@M4CHINE69]

Im def printing this for my crystal radio

[@M4CHINE69]

Oh yeah what gauge wire did you use in awg?

[@alifeleparanj3688]

Nice Video! I have been looking for such a thing to use in the matching box of an RF plasma generator

[@FesZElectronics]

If you try it, let me know how it works out!

[@alifeleparanj3688]

@@FesZElectronics For Sure. I have a suggestion for some videos. There is nothing beneficial video series on youtube about high voltages. I mean videos about high voltage generators and possible topologies, safety considerations, etc. Most of the material and videos about HV on youtube are just show-offs of the results rather than suitable learning material. And because high voltages are dangerous, one can not actually go through with trial and error. High voltages are extremely useful in academic labs, so I can imaging the high number of people looking for something relevant on youtube. So I am suggesting to make a video series on high voltages which can absorb so many viewers. High voltages are attractive to both scientists-researchers and hobbyists. HV video series with educational material can be super popular!

[@ScientistPrepper]

Real helpful video. Great explaining of everything.

[@paulp1204]

I don't know how I missed this video. Is great, I had forgotten that two antiparallel inductors will cancel out their inductance, because it's all about the B field. Thanks Fesz. PS, maybe both your inner and outer coil formers could be shorter, and the relative diameters closer together...

[@FesZElectronics]

I haven't tried with short coils, mainly because I wanted to have large inductance values, to make it easier to measure. I think the best approach though to make this sort of device is spherical coils. Even though its very difficult to built, coil length will no longer be an issue, and very small air gaps can be achieved.

[@priyanshukumawat4142]

i recognised your channel from playlist of lt spice and discovered many more great content ,Greetings from INDIA!!

[@shubhamnayak9369]

Same bro

[@FesZElectronics]

Thank you! I'm happy you are enjoying my content! The LTspice tutorials seem to be my most viewed content, but I try to keep things more diverse and do other stuff also.

[@priyanshukumawat4142]

@@FesZElectronics here is a suggestion if you like you can make a playlist of end to end small electronics projects that can be done easily and are intuitive . this is I am sure you can even search on youtube there is no such playlist available may be this will help your channel growth .....

[@dhanujajayasinghe1336]

Great video.

[@MegaCadr]

Very cool!

[@izzzzzz6]

I have a ball variometer. Very nice!

[@aurthorthing7403]

Sweet! Now I'm looking at everything in my house to see if I can make a round one. Only thing I can find are plastic Easter eggs.

[@FesZElectronics]

If by round, you mean spherical, I've seen those made with cutout circles - have two pieces of 2D circles inserted one into the other at 90 degrees. At least for the inner inductor this works quite nicely and can be made easily from cardboard or plywood - something that looks like this www.thingiverse.com/thing:3401282

[@aurthorthing7403]

@@FesZElectronics sweet! Yeah, something like that but I want to make the outer coil round as well. It's a good excuse to get a 3D printer.

[@rhp9797]

Another great video!!

[@domtom128]

Great video as always! In what frequency range can it be used, did you maybe measure its self resonant frequency?

[@domtom128]

Also how is the coupling varying with frequency?

[@FesZElectronics]

I'm not sure if I have the right tools to make the measurement, but if I manage, I will let you know.

[@user-vpp]

Can it be used to increase the frequency from 50Hz to kilohertz?

[@bertoid]

I don't see why spherical coils would be so ideal. A sphere is symmetrical in 3 dimensions, but as it rotates about just one, you can do whatever you like with the other two. So what about rectangular coils? (Similar to compressing the cylinders along the shaft axis, making the coils elliptical) This would allow closer coupling (at the maximum, and lower coupling at right angles, giving greater range) Or maybe make the coils as flat spirals?

[@AlienRelics]

I am going to try exactly that, in a configuration like this: www.abschirmgehaeuse.de/media/images/va1f_01-large.jpg

[@tonychristoph1063]

👍

[@_wave64_]

2:24 The SOKOL :)

[@FesZElectronics]

You have good eyes :D

[@m1geo]

/me clicks the power switch on the 3D printer... Thanks, George M1GEO.

[@peterbrowner4687]

Nice movie!!!

[@girishsrivastava1327]

I m hw engineer from India, looking for some work which can be manage online. Could you please help me.

[@leewilliam3417]

Mmmmm😊

[@LaurentiuFrunza-bg1it]

Very expensive project ...2 pvc tubes or paper and scraps i make for battery tube receivers not compare....

[@girishsrivastava1327]

Hi

[@aa-bu7ml]