#919

Рет қаралды 4,521

2 жыл бұрын

Episode 919
Let's talk about these terms and look at an example
how LCR meters work: • #560 LCR Meter
Be a Patron: / imsaiguy

Пікірлер: 45

@thrillscience 2 жыл бұрын

Thank you once again for your excellent vidoes. I'm a 58-year-old "math major" who programs computers for a living, but dabbles in electronics. Your videos are exactly on the right level for me, and I like your style.

@andrecarlos985 2 жыл бұрын

Nice and simple way to introduce a complex topic, good effort. That's the cornerstone of a great teacher, even if you never teached.

@theworldaccordingtome6448 2 жыл бұрын

We never did Smith charts at school but now thanks to you they are starting to make more sense. My only comment is that at 2:18 you say: "Its easier for low frequencies to go through the capacitor", I think you meant to say "Its easier for high frequencies to go through the capacitor". Thanks again for the Video.

@sacch6579 9 ай бұрын

I thought so too....

@rrb6544 2 жыл бұрын

crystal clear and awesome presentation, I love those maths behind impedance, reactance and smith charts 😀

@g0hjq 2 жыл бұрын

Thank you for a very imformative video. I always wondered what the Smith Chart was, and your explanation was very clear and understandable.

@radoslawbiernacki 2 жыл бұрын

Sir, this is most easy to understand and usefull video about Smith chart on YT. Please continue. Your videos are great!

@IMSAIGuy 2 жыл бұрын

Thank you

@krzysztofsoja5301 2 жыл бұрын

Thanks a lot! Looking forward to see next one about the Smith chart :)

@hanskoc3473 2 жыл бұрын

I agree, write a book, you are a such great lecturer. It wolud be a second book of you, just after "The memories of the high-tech corpos' engineer" :)

@skylabby 2 жыл бұрын

You've made it so easy to understand..Thank you.

@t1d100 Жыл бұрын

Nice introduction! Thank you!

@darkobul1 2 жыл бұрын

I was just trying to find info on this and you posted the video.

@JoseHernandez-md8tv 2 жыл бұрын

Never got it told like this, please keep going that way.

@rrb6544 2 жыл бұрын

gorgeous VNA you build with that 8711... great!

@tommieSPQR 2 жыл бұрын

Very instructable.

@krish2nasa 2 жыл бұрын

Excellent explanation! Please make a video on Smith Charts, Thank you very much.

@wildbill1 2 жыл бұрын

Nice video of understanding a smith chart and a nanovna

@electroautomation3397 2 жыл бұрын

Really like your videos. I'm an old fart myself and play around with inductors, capacitors and VNAs. I usually am trying to incorporate microcontrollers into my designs to automate adjustments so.... more videos with micros ??? Anyhow... keep up the work - we all seem to like it :)

@IMSAIGuy 2 жыл бұрын

I have 900 videos, go look at the old ones. lotas of micros

@bobkozlarekwa2sqq59 2 жыл бұрын

Where were you when i was in school? Great video!

@TonyBarr99 2 жыл бұрын

Also, I have to say that the 2π converts the frequency, f from the unit of Hertz (cycle/s) to the "unitless" unit of radians/sec. The 2π being of the unitless unit of radians/cycle.

@IMSAIGuy 2 жыл бұрын

well radians are a unit, and seconds are a unit. so radians/second are certainly units. The 2pi part does come in handy with all those sines and cosines repeating themselves every 360 degrees.

@IMSAIGuy 2 жыл бұрын

since 1 Hz = 2pi radians/second. the units conversion is just cycles/sec to radians/second. sometimes called angular frequency (omega)

@ozzymandius666 2 жыл бұрын

@@IMSAIGuy As a physics guy, we consider radians to be dimensionless. Arc length/radius, so both f and omega have units of 1/time.

@3cu14rs 2 жыл бұрын

More smith chart stuff please.

@TonyBarr99 2 жыл бұрын

For all you mechanical engineers out there (like me!) who like to dabble in electronics: The Smith Chart is the "Mohr's Circle" of electronics. What do you think?

@IMSAIGuy 2 жыл бұрын

lots of circles floating about, optics folks can one up you with Poincaré spheres

@a2phil 2 жыл бұрын

Possible stupid question. Can a VNA be used to check capacitors and inductors? I have some capacitors to check...

@IMSAIGuy 2 жыл бұрын

you can check the capacitance value at a frequency.

@yuanwang5901 2 жыл бұрын

Just wondering hp 8711 how many sweep points it can do? 401?

@IMSAIGuy 2 жыл бұрын

1600

@leo959 Жыл бұрын

U and lasersaber sound the exact same.

@arduino5267 2 жыл бұрын

Sir what a kind of machine is that?

@IMSAIGuy 2 жыл бұрын

That is a Vector Network Analyzer

@arduino5267 2 жыл бұрын

@@IMSAIGuy oh ok thank you

@PapasDino 2 жыл бұрын

You were great until the very last equation when you used capital "I" to represent impedance; that might confuse someone (I could hear the gears turning in your head as you said that and was surprised when you used it!).

@IMSAIGuy 2 жыл бұрын

Yes I should have used Z but I really believe the problem with teaching is that people get hung up on just memorizing things instead of the fundamentals. And if you see a random Z there is no way to tell what it stands for. and why j when there is already an i. Just wait for my big lecture on gamma and what the smith chart really is. I will loose 99% of my audience

@RideGasGas 2 жыл бұрын

@@IMSAIGuy So the current (C) is equal to E/I ? . . . ;-)

@IMSAIGuy 2 жыл бұрын

I think you are confusing E and V. E is for energy, or power of 10 exponent, can't remember, vitamin E maybe 😎

@PapasDino 2 жыл бұрын

@@IMSAIGuy Hmm, not so sure about discarding E since it has historically (at least in EE) stood for electromotive force (emf). E and V are often (perhaps mistakenly) used interchangeably when talking about voltage if the discussion relates to ordinary electronic circuits. In ham radio you probably won't get dinged for exchanging E=IR and V=IR. Think that E should be used when the discussion is about fields, ie motors, generators, antennas, transformers etc. for example when thinking about back-emf.

@RideGasGas 2 жыл бұрын

@@PapasDino Right, E is electromotive force measured in Volts, I is current measured in Amperes, R (or Z) resistance or impedance measured in ohms, and of course as noted X is reactance also measured in ohms.