What do vacuum tubes (valves) do?

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[@andrewhall8131]

Finally someone that can explain things in English instead of Goblygooch !! Great job.

[@kushagrgupta8654]

Hmm gobblygooch.. Gonna use that somewhere..

[@mauer594]

it's not a great explanation and misrepresents a few key principles and features of vacuum tubes.

[@ahmedahmed-tp6bo]

yes..good ... but hhhhhhhhhhhhh this the first time i see this word "Goblygooch " i am an arabic guy....a new word i learned from your grand mother i guess ....thank you

[@KRAFTWERK2K6]

So far the BEST and most relatable explanation of the function of a vaccum tube / valve. And it also visualizes why tubes don't just amplify like a transistor would but actually shape the audio signal in a smooth all-electron way. THIS HERE is exactly where all the audio magic happens that people like so much and what the tubes / valves do to the audio signal which then renders a very ear-pleasing sound (some would call it saturation). This right here is the reason why and how it happens.

[@kenhammscousin4716]

Is it really? Fool, with this information I will build a weapon to destroy my enemies! Thank you

[@ectobluntus]

THANK YOU SO MUCH!!! I can't tell you how many 20+ minute videos I've watched that explained the tone characteristics, advantages/disadvantages vs solid state, types of tubes, etc but never explain how the tube itself works. This is exactly what I needed.

[@MercyNoMore]

It's nice to finally see an uncomplicated explanation of how tubes actually work.

[@mf_rat]

Can you send me the link to the uncomplicated explanation you watched?

[@Paprika526]

What a fantastic explanation! Thank you for taking the time to create this video!

[@VK4KK]

Short yet all I needed to understand the principal for a tube. Thank you so much!

[@kevinw6237]

Brilliant explanation. Thank you so much

[@loverforever9030]

Wow finally get it! Very good job

[@concretel10n]

Beautifully explained - thank you

[@khushisingh2163]

Thanks man really helped a lots

[@rappergenerico]

Woah, this was a great explanation, thank you!

[@jantadeuszgasiorowski6166]

Finally answered all my simple-ass questions! Thank you!

[@user-jl2wd1it8h]

Great video!

[@whiskiikat]

PERFECT Explanation :)

[@curtvincent3728]

Fantastic graphics and faucet analogy! Thank you!

[@ProAudioEXP]

Glad you liked it!

[@albertchiu655]

good tutorial ! 👍

[@mauer594]

It's perhaps notable that the heater merely controls the rate at which the cathode releases electrons - it is not typically part of the same circuit as the cathode/diode, which are the things that release and pick up the electrons.

[@wesmatron]

Genius shines in making things simple.

[@Earlvis]

The heater does not provide electron flow to the plate. That happens at the cathode. The heater only encourages boiling off of electrons from the cathode.

[@joeswampdawghenry]

Well done!

[@misterjack347]

Plz do an analogy on Transistor as Amplifier too. This was explained very well.

[@shironmitchell]

Thank you sir

[@MSI2k]

Very nice

[@Serjm87]

fascinating!

[@cyrillewis9606]

This setup is similar to a battery/resistor/led circuit no? The AC flowing through the grid ebbs and flows like when we turn a knob to regulate the flow of water in a faucet.

[@PrincePrince-ov7nd]

Sir which metal is use for anode and cathode

[@iampuzzleman282]

How does the frequency or actual sound get involved within the tube? The sound comes in and the electricity comes in and how does this involve the tube?

[@bpg786]

Fantastic explanation of how a valve works, thank you. Just to start the conversation, assuming you are using the standard (Oxford Dictionary) definition of the word amplify, which is to increase in strength, then a valve dose exactly that doesn't it? It increases the strength of the signal in the vertical axis of the graph only leaving the horizontal axis largely unmodified. The vertical axis is amplitude, so by the most basic definition wouldn't that make it an amplifier?

[@mr.crighton9491]

everyone's already said it : THANX!!!

[@jaaqess2525]

How did anyone ever think to make the first tube?

[@alexanderquilty5705]

Is this using electron flow theory or conventional flow theory?

[@jackalovski1]

I’m offended that this is the first video KZbin recommended to me when I asked it how vacuum tube amplifiers work. I know you tried to explain it with the tap but it doesn’t output an alternating current because it doesn’t alternate and you even showed an AC waveform in the diagram with the zero line going through the middle of it when it should be at the very bottom of the sin wave.

[@chronobot2001]

I thought the heater was literally a heater and the plates were cathodes, anodes and grids.

[@mauer594]

They are. The heater controls the amount of electrons that the cathode can release into suspension.

[@Chris-cf2kp]

Makes me wonder then, how electrons passing through a grid, are filtered so preciseley to replicate the waveform onto a plate? And how does the plate transfer that signal accurately? Is it resonant? Electrical current? How does a varied wave across an area of a plate end up outputting just one value of a waveform instead of waves overlapping on the plate?

[@kenhammscousin4716]

Ah, yes, I concur. Shallow and pedantic.

[@joeswampdawghenry]

Osmosis

[@robertharrison1601]

Improvisational street harmonics

[@davidseal8375]

Input to grid is ac ....when the grid is negative electrons won't pass between cathode and anode....when the grid is positive it causes a increase in electron flow.....

[@TheMightsparrow]

What is this utilised for?

[@corinnarust]

sorry if i'm wrong amplifying and can be a diode and triode (if there's the grid) electrons can't flow through the plate, only by the heater sorry for i've killed the english

[@daksheshsharma7020]

👍 from india

[@fredwilliams8571]

The FILAMENT is the HEATER not the cathode.

[@andrewbeattieRAB]

I’!! be damn.

[@mistirion4929]

So basically it's an amplifier. It takes a weak signal and amplifies it, if you want to call it like that or not. That said, this video was absolutely great because I've never quite understood what exactly they are used for or what they do on a basic level. Thank you so much

[@mauer594]

A Vacuum tube is a valve - it controls the rate of flow of electrons. The control grid may amplify it, but that's not the "function" of the tube itself.

[@bpg786]

It increases the strength of the signal in the vertical axis, its an amplifier 👍

[@mf_rat]

Faucet analogy doesn't make any sense. Where is the water coming from to turn the faucet on and off?

[@DasAntiNaziBroetchen]

You didn't even explain how the grid is removing electrons, as if that is completely obvious.

[@CFox.7]

So you clearly got a strong Australian accent but you pronounce tube as toob and say faucet in place of tap...okayyy

[@ProAudioEXP]

Born and raised in Australia…lived in America the last 35 years. 😊

[@aLittlePal]

So you need to focus on the nature of the grid, and how the grid material react to your input ac power fluctuations, that is where the precise fidelity and resolution is made, the vacuum tube is just generating a strong constant signal, the grid which is connected to tour input is the real one who was doing the audio signal work

[@buntypatil8722]

Thanks sir