How Washing Machine Motor Speed Is Controlled Under 1300 RPM

[@debelix]

As a service technician with over 30 years of experience with European home appliances I must point some errors you made in this video. When checking the speed of the motor the Electronic board (Electronic Timer) does not read the voltage from Tacho generator but the frequency because it is much more accurate! The same is the case with analog electronic pressure switches (Pressostats). About the TRIAC you got it all wrong. You described it's function as BJT transistor - the more current thru the gate (Base) the faster the motor will turn. Triac's are activated at specific point in time in regard to sinusoidal wave of the mains voltage. This is called triggering or firing ANGLE. Let's say the sinusoidal wave is at 0 and it starts to go up in positive half periode, when it reach the top we send the firing signal to the gate and from that moment on the Triac will conduct the current (at this point it is no longer relevant if the firing signal is still present at the gate or not) until the wave comes back down to 0 again then it will cut off. We repeat the same when the wave goes down in negative half periode. That way the motor will rotate at half speed because we trigger the Triac at the half of the wave length. So by changing the firing angle of the Triac's gate we change the speed of the motor. The sooner you trigger the gate the more time during the periode the Triac will conduct and the opposite is true, if you trigger the gate later the less time the Triac will conduct which will result in lower speed. The triggering or firing angle can be from 0 to 180 degrees because that's the length of the half period (negative or positive). 0 degrees firing angle = 100% motor speed and 180 degrees = 0% motor speed.

[@forevertechenglish]

The Idea of the video is just to explain how the washing machine motor work clockwise and anti clockwise, I didn't discuss the indepth logics of electronics used in circuit.

[@RogerTannous]

@debelix, 100% true. Also regarding Pressostats, I've seen models where there is a membrane that gets pushed by means of pressure, it moves a coil along with it, and the circuit is built around a 4060 IC which results in a change of frequency. Some older models have the 4060 chip on the washing machine's main board, rather than inside of the Pressostats themselves. And you are also right about the triac thingie, you described the triac functioning correctly, while the author of the video repeatedly treated it as a BJT instead! If the main focus of the video is just to show how we change the direction of the rotation, then they should have only mentioned that the triac serves to change the motor's speed...

[@RogerTannous]

And lol, I just rechecked the title of the video, it's about how we change the motor's speed! The direction of rotation was something extra...

[@RogerTannous]

The funny thing is that the guy was apparently connecting the multineter to something else while pretending to be measuring the voltage from the tacho 😂 the rotor was clearly at rest!

[@kyimedical]

Magical or animations still antedating me though , good to learn deeper knowledge with oscilloscopes demonstrations ! I thought there was micro controller program as well , direct drive would be more complicated as there was 3 phase AC motor that need power inverter . Compare able to electric car and e bike control module!

[@titinegruta9532]

Va mulțumim cu deosebit respect și aprecere....pentru modul pedagogig in care prezentați.....succes in toate proectele

[@ovoono4484]

This is the best video about this topic ever! The best!

[@forevertechenglish]

Thanks

[@Rajaappa-s8e]

THANKS A LOT FOR THIS EXPLANATION. I HAVE SAVED ONE YEAR EVENING CLASSES. AppA 17.6.2024

[@Dimitar_Stoyanov_359]

[9:30] "When we switch on this relay. See! We switched on this relay." 😂

[@lucyxchan6808]

Hm...yes, the floor is made out of floor...

Thank you very much for your work and sharing. I build up a 555 flip flop to make my washing machine motor work with the circuit you explained here. It works both directions but when we come to use it in the machine; since it doesn't wait the clockwise turn before starting the counterclockwise turn, the motor heats up in a very short period of time. Do you have any proposal to make it wait the turning stops before it changes the rotation ? Thank you for your time and interest. Best wishes.

[@mcgam2000]

In the USA, most modern washing machines with microprocessor control use 3 phase motors with variable frequency motors. And they also have a feedback system for the "taco" or tachometer

[@alexanderramos4260]

Thank you very much aguas tuyú

[@hansdampf2084]

Standard in europe for like 10 years.

[@منصورایقانی]

I have watched so many videos on this field so far but I hadn't seen a video that explains this matter as accurate as you did. That was exceptionally practical and useful! I just can't thank you enough!

[@forevertechenglish]

Wow, thanks!

[@DantesAlvesdeSantana]

Bem explicado👍👍

[@PaulBarneau]

Hola gracias por enseñar!!! hasta yo. que soy prácticamente ignorante entendi su explicación!! Gracias

[@forevertechenglish]

Eso es genial de escuchar y un placer Querido

[@omarmohmmed]

❤❤❤😊😊😊 شرح جميل جدا وغني بالمعلومات شكرا على المجهود الرائع

[@roshnivaldar2746]

Great Video and well explaned with Diagram, Thankyou

[@herobandar8257]

The best of the best how to video.

[@forevertechenglish]

Thanks

[@johnanigbogu2909]

Hello sir, I like how your video is well detailed.can you make a video and show us how washing or dryer knob selector works?🙏🏻🙏🏻🙏🏻

[@forevertechenglish]

Will try

[@hoihaihoi]

Great video... Thanks for sharing knowledge.

[@ilkertokgoz2465]

Thanks for English and legendary teaching. Certainly best of the best.

[@forevertechenglish]

Glad you think so!

[@julianlp4121]

Excuseme sir, are you sure the rotation velocity is handled switchin on and off the relay rather than working with the triac switching period?

[@marcosmartir3354]

Excellent video sir,thanks a Lot God bless You

[@forevertechenglish]

Most welcome

[@mcgama88]

Thank you for this post as very clear in the voltage components. M.

[@tech.curiosity]

Awesome and so usefull video, strait to the subject from the start, i love it. Thank you so much.

[@forevertechenglish]

Glad you enjoyed it!

[@ChanYC8829]

Thanking you very much for all your details technical information.

[@forevertechenglish]

THANKS 🙏👍

[@fcvgarcia]

Thanks for the great video!

[@dav1dbone]

My friend in Kolkata Port opened a container of waste electricals from the UK and Chopper jumped out, he was brandishing a claw bar, he jumped up on the container roof and started hunting other containers to bust out other stowaways.

[@valerianpantsulia5137]

Great video and good detailed explanation, thank you......🤗👍👍👍👍👍👍✌

[@cardboardboxification]

2:25 “si the taco is something like this “ lol

[@question_mark67]

It's actually at 2:23

[@rezahamidimilani]

You are really the best. ❤❤❤

[@tissapathiratna7761]

Thanks 4 the Video.

[@farabielec]

Thank you

[@forevertechenglish]

You're welcome

[@MarineElectrical]

Good job!

[@forevertechenglish]

Thanks

[@faridakli466]

أنت شخص مميز أشكرك

[@พิสิฎฐ์สายสอาด-ฝ7ฑ]

ขอบคุณที่ให้ความรู้มาครับ

[@christianrazvan]

This should have more views. Good 👍

[@ciselec]

Thanks for your help

[@aliz83677]

In some modules in addition to relays and triac, we have a bridge diode and the motor uses dc voltage. Also the relays are parallel and both turn on and off together. Could you explain about them?

[@alsoncomputertechnology3445]

Thank you sir, but my problem is that my washing machine motherboard is faulty can you help me show me how to make the motor work in forward and reverse direction with the help of relay. 😊

[@chundrusatyanarayana3161]

Good explanation

[@bishopp14]

Damn. I'm only 3 min and 58 seconds into this thing and I'm straight craving tacos right now!

[@brianperkins6121]

If the motor is driven by the "AC" current sine wave through the Triac , the control board monitors the frequency of AC current coming back from the of Taco sensor and controls the current going to the triac "Gate" by regulating the current feed sent to the triac's gate it can control the Triac's switching point , as the AC sine wave coming into the triac varys from zero volts ramping up to full line voltage then back to zero again. if the Triac cuts of the current half way up the sine wave of say 100 volts AC you would be feeding the motor only 50 volts ,, so the motor would run at only half of its full power level,, the control board can constantly reference the Taco frequency to control the motors "desired" rotation speed..the motor has two sets of field windings , one is wound to drive the motor "clockwise" the second set , is configured so that the motor will run counter clockwise, (Desired rotation direction) As said the relays select which of the field winding are selected (rotate CW or CCW) , The Triac then controls how much power the motor is given to control its "desired" speed.. for the actions the washing machine is carrying out out the time.. The washers control circuts that drive the Triac send a pulse to the gate of the triac to turn it on. "But" that circuit can send the pulse so that it turns on after the sine wave has dropped to half its voltage . once the voltage in the AC sine wave drops to zero the Triac will automatically turn off the power flow. waiting for the next pulse to turn it on again ,, timing the turn on pulse at different points gets you more or less power.kzbin.info/www/bejne/b3nIXpdjfsmFh7s

[@forevertechenglish]

Well Said

[@Quemedices684]

This motor is called “universal” motor because in fact is a DC motor that can be driven from AC voltages. They don’t have CCW and CW coils, just the stator winding and the rotor (field) winding. This kind of motor can be easily controlled by changing the voltage (that is what the phase cutting triac is doing). From the schematics he has drawn the rotor coil is in series with the stator, that gives a high starting torque and high speed

[@KKn3k9]

So sweet...

[@avnisenay1515]

bravo

[@josephpadula2283]

It is not Mexican food taco. The part is a tachometer .

[@CM-bq9fp]

As so often, two answered questions open three new ones: why is the Motorspeed changed by different triac positions ("fire angles"). I thought if the voltage supply is 50Hz (1200rpm), the triac does not change that, it only deforms the sinusoidal voltage form.

[@danny323dee]

thats because the voltage supplied is not 50Hz, its 110v in the us and 220v elsewhere, the frequency is 50Hz dont get them confused

[@theoracle6005]

This is a universal motor with Multiple taps that control speed . Relays are used for forward and reverse control - clockwise and anticlockwise motion. On 3 phase induction motors - frequency control is used and controlled by an inverter

[@iandarall4551]

Fantastic explainkng

[@mikegLXIVMM]

hmmmm....why am I hungry for tacos all of the sudden?

[@professor-viewsalot]

Its a Triac NOT a Transistor learn how they work. Be a good idea to check on the RPM sensor too, the V is incidental proportional to RPM but its the FREQUENCY thats used and important to generate pulses to drive the triac.

[@nurarif8954]

Mercy Mr

[@forevertechenglish]

Avec plaisir

[@williamlangley2044]

I used to repair laundry mat equipment, these motors will work on dc and ac power.

[@kumudiniwasanthi1952]

Super

[@electricannulus8854]

When are you producers going to realize that using computer generated narration ruins an otherwise good video. AI, as it is erroneously called, is brutal and often makes no sense and cannot be followed. This is the case here.

[@elektrolyte]

i LOVE TACOS 🥰

[@elektrolyte]

and PCBBs

[@forevertechenglish]

I love technology

[@TheOgi22]

He describe just about On/Off motor spinig by relay, not RPM control.

[@ralph5450]

It's the washing machine the they use on the Red Dwarf.

[@orposhi]

Subtitle are on the diagram

[@keithyeung2586]

The Triac control the DC by the phase, for the motor will have the XL resistor. I think this is not true circuit. 我認為線路有問題

[@jimhibbard1546]

Did they just say taco. What the hell is bro talking about.

[@salh2665]

❤❤❤❤❤❤

[@avimango46]

Why BLDC motors are not yet used?

[@theairstig9164]

They are

[@forevertechenglish]

They Are

[@rubenscorreamoreira8891]

Vídeo em português?

[@Manta_Dennis]

SEE! 👀

[@grassroot011]

Taco? Haa. ??? Tachometer more like, Si?

[@layyahwal7261]

Sudi Arabia

[@arturtrzebinski2112]

Gotta go the fastest

[@kokopelli314]

Notice the blurred marks of the actual video creator at the top. This person stole someone else’s work then put an erroneous robo-script on to make quick cash.

[@forevertechenglish]

Dear, I have two channels, the one is english and the other is hindi. My viewers wanted an English channel, so I created one. I used A-I for scripting in english, as it is cost effective.

[@joemendyk9994]

Take that you troublemaker....

[@bridgetshepherd5202]

Why would you blur your own logo?

[@IasonPetridis-ng3ve]

​@@bridgetshepherd5202 You are a genius. You catched him!

[@christianvictor827]

​@@bridgetshepherd5202You can clearly see it's the Forever Tech logo on the Hindi version of this channel.

[@AliPasha200]

Sir There is no audio in this video so can't understand you.

[@forevertechenglish]

Dear plz check your you tube watch page audio may be it is muted

[@AliPasha200]

@@forevertechenglish i heard voice of english translator. Glad to learn more about automatic washing machines 🙂

[@geoffgeoff143]

You are controlling the torque, not the speed.

[@edgarnavarro8919]

Ok

[@rameshmanukonda]

You are showing only 3 points on a relay where there will be 5 points on a relay.what happend anothet 2 connections on the relay.

[@forevertechenglish]

Dear remaining two points are for 12 dc volts coil to energize the relay to connect disconnect the point i had showed in the video soon we will release video on relay topic in english but if you are intersted visit to my hindi channel video and you find answer of your question kzbin.info/www/bejne/h3StlIh4bL-fqcU

[@arthouston7361]

I will not listen to a computer narration…….goodbye.

[@forevertechenglish]

Its your will dear, you will miss alot of things

[@JAYDELROSARIO-l5t]

COMMERCIAL NOT HOUSE APPLIANCES

[@tigerseye73]

I dislike robot instructors.

[@rubenscorreamoreira8891]

Traduzir o vídeo para português é possível??

[@forevertechenglish]

Você pode usar legendas em português

[@curtiswalter86]

Sounds like im listening to a bot later much

[@MorKabry]

Vous mettez le titre en français et c'est l'anglais qui se présente

[@forevertechenglish]

Tu peux utiliser les sous-titres français, mon frère

[@chrisjarvis4449]

lesson to me ! ok . lesson to me let me make this clear ! ok . hey do you ever get off with the motor ? just asking ! ok.

[@patrickjohnson7801]

I'm hungry

[@gppizza8979]

did anyone get all that?

[@fernandomatias5514]

❤️🇵🇹🍀

[@jayconway1205]

I could only watch for about 1 minute before I was so irritated listening to the robovoice that I had to exit. Good luck if you choose to watch it.

[@mohammad45h]

🙏🙏🙏🙏🙏🙏🙏🙏💝💝💝💝💝💝💝💝👌👌👌👌👌👌😘😘😘😘😘😘😘

[@innocenzomaiolino7693]

Se non tutti sanno inglese. Come si fa capire. O ci vuole un traduttore. Ma almeno la traduzione. A fianco

[@forevertechenglish]

Puoi usare i sottotitoli in italiano per capirlo

[@stevep7950]

Are you a robot?

[@forevertechenglish]

Nope Real human. Using Ai for the english narration.

[@abdelzri3357]

Ikjjjjjjk

[@theschwarts]

mmmmmmmmmmmm tacos!

[@mariobarrera146]

What if you have std

[@ICUNA22]

Do you believe in magic???

[@mjmeans7983]

Thumbs down because I don't like computer generated speech. Stopped watching after 25 seconds.

[@forevertechenglish]

Well Then you just don't get the knowledge you would had. Your Bad

[@mjmeans7983]

Thank you for responding. Please that this as constructive criticism. I do realize that any interaction (even comments) improves the YT algorithm for you. So perhaps the interaction helps you build your channel. But, a computer generated voice is no better than reading a web page since the computer voice lacks vocal queues that can show uncertainty or confidence in the points being conveyed that are not evident in the mere text. So the way I see it, without a real person telling me what they think and why, with appropriate inflection, my time is better spent reading authoritative technical manuals.

[@forevertechenglish]

Well, it varies person to person. Some one would watch the video till the end just to get the knowledge, I got the point. These Ai voices don't have the depth and feel the real person could give. But the thing is who is seeking for knowledge he would neglect the voice and get the knowledge instead. I love your criticism, I know the manuals could be better then watching a computer generated video. But even I didn't find the things which I needed in the manuals. I learn it through experiencing it. And that's what I am trying to share, Have a good luck for the rest of the day, Regards

[@peterjansen4894]

stolen content

[@thecasualcitizen492]

Computer Generated Voice? What effort does it take for a computer to read a text file/ Thumbs DOWN!

[@海闊天空-g8w]

Copycat video!

[@forevertechenglish]

How??

[@skrame01]

Mmmm tacos.

[@karacahil53]

bla bla bla