⚠️ This video took a long time to make if you would like to buy Paul a coffee to say thanks, link below: ☕ PayPal: www.paypal.me/TheEngineerinMindset Channel membership: kzread.info/dron/k0fGHsCEzGig-rSzkfCjMw.htmljoin Patreon: www.patreon.com/theengineeringmindset

@JjMn1000

3 жыл бұрын

I love them!

Hey Paul, I noticed that recently you started making this kind of circuit design videos which rightly attracted young generation of electronics engineers, today another student of mine (I am a physics teacher at school) dropped this link to me. Keep it up. great idea (y)

@EngineeringMindset

3 жыл бұрын

Very glad to hear, plenty more coming too

@abdulalessi2962

3 жыл бұрын

@@EngineeringMindset well i am waiting, it’s very useful and well explained! Specially for me as a beginner in electrical engineering.

@arsenicjones9125

3 жыл бұрын

We should stop to thank Ham Radio operators. W/o them diy electronics would have died in the 90’s. While the world moved to disposable electronics they kept and practiced the runic arts until our generation was ready to fix all our own stuff and stop tossing it.

@Wallrod

3 жыл бұрын

@@EngineeringMindset I'm an adult but actually interested in electronics now, it's REALLY good to have so many no-nonsense, concise learning videos about this. None of that 'hey guuuuuuuys today we're...' fluff and filler, thanks for doing these.

Man, this video is pure quality, thanks for explaining in such detail how this circuit works

@EngineeringMindset

3 жыл бұрын

You are most welcome

Where were you when I was studying electronics in the 80's. This makes so much sense and great explanations.

I can't believe these lessons are for free. Thanks for sharing!

I wouldn't compare LEDs at 50 Hz square wave with incandescent lights at 50 Hz sine wave. The fillament stays warm enough to be bright for a bit, it has an integrated smoothing through thermal mass. 50 Hz flicker is very much noticeable.

@PatrickKQ4HBD

3 жыл бұрын

It needs a small rotary inductor in series. A cheap DC motor should work well. 😉

@PatrickKQ4HBD

3 жыл бұрын

Didn't he say that this circuit ran at 1.4 kHz as built?

@altosack

3 жыл бұрын

@@PatrickKQ4HBD - Yes, but he mentioned you could increase the capacitor and reduce the frequency.

@lordjaashin

2 жыл бұрын

@@altosack so? what is the issue here? his point is still valid.

Best engineering channel ever... Much better than some fake electrical guys channels

I love all of your PCB videos! I have tried to find educational videos for making PCBs and you nailed it! Thank you!

Just got the PCB's I ordered for this project, can't wait to build it. Thank you Paul for taking the time to make this video and for sharing, I love it!!! Thank you Sir :D

Man this video did a way better job at explaining the 555 circuit then videos that are dedicated to the 555.

This is a really good explanation of the infamous 555 timer. Thank you very much!

Followed the link to Altium and found that, as a student, I am eligible for a free 6 month licence. This is fantastic!

@EngineeringMindset

3 жыл бұрын

Fantastic!

@The.Talent

3 жыл бұрын

@@EngineeringMindset now trying to figure out how to get the Library Loader working. It keeps going into debug mode before I can put my username and password in and it’s crashing the app. I’ll have to reach out to the devs.

Please accept my sincere thanks, you have explained the Circuit in such a manner that it becomes easy to understand. Keep up your good work

This is the best of all explanation of how to use and what is why for 555 controller and how to use it with dimmer and mosfet transistor. Thank You very much, because I like deep explanation that can tell you what would you do more or follow Your steps so You can get everything done as it should to be. I use to do this/repairs and collecting schematic element and solder but I stop, life took me in the other side of some branches of work, and now I see how I was stupid for not following my dream and keep doing this 12 to 13 years ago. Tnx that You doing this. 👍💯

Great way to start the morning.

@EngineeringMindset

3 жыл бұрын

Morning!

Excelente aporte. Toda una clase de electrónica para hacer un regulador LED. Gracias 👍

Love it, my knowledge gain again from this channel

@EngineeringMindset

3 жыл бұрын

Glad to hear it!

great explanation specially going into the frequenty, most forget about that. Going to hook this up on my arduino stead of the potmeter!

This kind of videos is amazing, something I can do at home 👍🏻

thank you very much, keep up the good work, the efficiency of your work is 100%. :)

Fantastic video on a fantastic channel! Thank you!

One of the most depp explaination of 555 ic tx so much for efforts.

Thanks so much the circuit design series is amazing.

@EngineeringMindset

3 жыл бұрын

Glad you like it!

So cool!!! Thank you

Muito boa a explicação e a edição.

Thanks for this video Paul a big help for big project but not that expensive🙂🇵🇭🇵🇭🇵🇭

Show de show de bola! Quem sabe .... Sabe!!! Poisé.

LOVE THIS CHANNEL

Very good videos want more of this kind

Nice and simple, using a small micro controller would open a world of features to this project...

@Darkmaster5629

6 ай бұрын

This would also make it more expensive and overcomplicated

Thanks a lot,very detailed and informative video.Keep it up the good work.

@EngineeringMindset

3 жыл бұрын

Glad you liked it

Hi Paul, I love and enjoy your tutorials. Do you have or can you create PCB for LED sequencer? I would like to build sequential turn signal for my car. it would be nice to run 14 or 28 Chanels. Thank you in advance.

Thank its more helpful !

Hy sir my name is Nirban and I am from India and I am also electronics engineer. My question is 1- how many times using the circuit with out heating issue. 2- how much ampere using in output in this circuit 3- when battery is low led brightness automatically dimming or led off I am your big fan ❤❤❤

Thank you for teaching us! I have a suggestion/request... Please add a close-up shot of your breadboard layouts. Or, better yet, provide your breadboard layout in a Fritz photo and/or file. Fritz is freeware.

Excellent

Hi buddy, thank you for the great videos you are making, please make a tutorial on making (magnetic stiffeners) and (electronic magnetic stiffeners), these stiffeners are used in dishwashers and all kinds of piping system paths, And it makes the deposits in the water disappear, (please make an instructional video about making electronic boards for magnetic stiffeners) Thank you for saving me from addiction with the videos you made and for making me able to I exist, I use. thank you

Just built this, and it works fine. One funny thing that happens though is that the LEDs flicker brightly if/when I turn the poti too fast. Could this be due to my using a "normal" 555 timer rather than the CN version? I don't really understand what the difference between the two is.

hi.. up to how many Amper/current this pcb can handle?

very good explanation

Wow, I really enjoyed this great lecture. If you get a chance, could you explain the principles of AM radio? ❤

Thanks!

@EngineeringMindset

2 жыл бұрын

Thank you, Milian

Great Project, I did have one question? On review of the video at time stamp 10:11 I see that the Wiper output is connected to the "CW to Diode" trace. and was wondering if this is incorrect? getting ready to do a breadboard example, and will try. Thanks

Bigclive showed an interesting design for an rgd led dimmer. Instead of using the 555 as a pwm driver, it was used there as a triangle wave generator and the mofsets were actually driver by a comparator. Potentiometer wiper to the + pin and the triangle ramp waveform to the - pin. This is the circuit in a nutshell

@lordjaashin

2 жыл бұрын

can you share the link to the video?

@EngineeringMindset

6 ай бұрын

Seen our new Potentiometer Explained video? ➡️ kzread.info/dash/bejne/ipZhr7yGn7jak7Q.html

Hi there. Thank you for this video. I build the circuite but LEDs does not turn off completely. I tried different hacks and finaly i solved the issue by adding a 47nf cap between the gate and the GND.

Man... I was on the internet cause my stupid brain decided i had to make a modern antiques Phone into a lamp. But NOT a simple lamp (obviously, cause why easy stuff even if Im stupid? Right?), no. An rgb lamp with a potentiometer to dim the light (or any dimmer for what it's worth) AND, nice to have, being still able to use the number buttons to set preselected light colors (preselected i don't have any idea how. I guess an Arduino must be involved in this mess but i cannot use one). AND the on/off switch must by used through the switchhook. GOOD GOD I AM SO OVERWHELMINGLY DUMB FOR THIS IDEA. I was saying, i came here expecting something easy for me but this made me feel a total idiot 2 mins in. I mean, nothing wrong on your side it's all my fault. I guess it is extremely useful for people who can appreciate it. Much envy from italy, Great job!

@EngineeringMindset

6 ай бұрын

Seen our new Potentiometer Explained video? ➡️ kzread.info/dash/bejne/ipZhr7yGn7jak7Q.html

Thanks you so much sir for this vedio toturial it is very helpful for me as a bigginner, keep it up sir👏👏👏

Thank you for sharing sir new supporters here

very good explanation from iraq

Hey sir, you explained the function of pin 3 very well (you chiseled it in my mind), but I don't see any reason why increasing/decreasing the frequency controls the dimness of the light.

Could you please tell me where the number 0.693 come frome? thanks

For LED, that like constant current or constant voltage driver ?

As long as u are my master. I don't need any engineering degree to make my project done. Thanks Paul.

I had so much trouble understanding how to make pwm from 555 timer although the video didn't help me fully understand it but it was well explained 👍🔥 only problem is that I don't understand what's an op amp, comparator, inverter, flip flop 🤔✌️

What would the limit on amps be on this board?

Is it possible to use PAM technique?

Hello Mr.Paul, is it necessary to use LM555 or can I use Ne555?

What is the purpose of connecting the two diodes in parallel on the charge discharge part?

I love your videos

@EngineeringMindset

3 жыл бұрын

Glad to hear, Tank

Can I switch the motor with a heating element to control temperature?

Thanks for the video! I am brand new to electronics, and I think I am going to try to put one together in order to make an LED leak light for repairing woodwind instruments. Perhaps a dumb question, but could I use a 1N4148 diode instead of a 1N4148B diode? I’m struggling to find the latter for sale on Amazon but it’s easy to find the former and I don’t know what the difference between them is. Thanks!

You should be fine to use the smallest track size JLCPCB accepts and have no issues up to 500mA of draw. Idk why everyone’s always trying to make their tracks wide af for a tiny current.

☕😎👍🏻 Thanks!!

Pls can you make a video on ac lamp dimmers with triacs

Hi, i built this exactly as shown on a bread board, but created it using 4 AA batteries.. I can't get this to light up at all.. Are you free to chat to go over this?

Will this design work for 5V supplied 114 LED display? As all the cathodes in the display will be connected together can it be connected there to regulate their brightness?

@EngineeringMindset

Жыл бұрын

Seen the new LED explained video? so much detail covered! kzread.info/dash/bejne/gWyBlNxrmKzIkco.html

Awesome video.. I am just wondering if this is the most simple version of an LED driver and if industrial drivers use any other design?

@EngineeringMindset

3 жыл бұрын

For sure there are many ways to achieve the same or very similar results, each version will have pros and cons. Industrial is far more complex and will use smd components, I use through hole components as its easier to see and handle

Hi, please make a video for cross over filter

Can this curcuit be used with 5mm leds instead of the led track?Thanks!

@EngineeringMindset

3 жыл бұрын

Sure

I have learned a lot from your channel and it has upgraded my knowledge

I need cheap schematic and pcb software. Any suggestions?

Paul I am looking for a circuit to control 2 12VDC led strings. They need to oppose each other as one dims the other brightens

@EngineeringMindset

Жыл бұрын

Seen the new LED explained video? so much detail covered! kzread.info/dash/bejne/gWyBlNxrmKzIkco.html

I am looking to expand my knowledge. My degree is not in electrical engineering and I am well beyond typical student age, other than a lifelong student. Any suggestions for material or a focus to start with? I am looking for more complex led, battery and power management type things. Thanks!

I am curious why don't we use a simple variable resistor to dim or brighten the LED, instead of using this complex circuit??🤔

@JohnDoe-dx6ix

3 жыл бұрын

Yes, I was wondering the same thing. But again, I am just a weekend electrical warrior.

@EngineeringMindset

Жыл бұрын

Check out NEW resistor video, everything covered! ➡️ kzread.info/dash/bejne/do2XrqiBl7mpnpM.html

Hi Paul, when discharging the mosfet, youve connected a 10kOhm resistor to ground but youve used a 1kOhm resistor to protect pin 3 of the 555. Will the electrons not follow the path of least resistance and flow back to pin 3? Or am I missing something, which is likely the case.

@EngineeringMindset

Жыл бұрын

Check out NEW resistor video, everything covered! ➡️ kzread.info/dash/bejne/do2XrqiBl7mpnpM.html

@EngineeringMindset

5 ай бұрын

See my new MOSFET explained video here➡️: kzread.info/dash/bejne/c6uGrNWzlcKfnZc.html

Why one side of diode is shoted instead you can give directly to pin 7 (discharge pin)?

Hi, my microscope led is this exact model. I burnt out the original circuit board because I plugged a 12 V wall charger instead of the recommend 5 V. So my question is can I use this led with a buck converter to allow a normal generic 12v to power it? Also need a dimmer switch attached to control brightness. Does anyone know how to go about this ?

@EngineeringMindset

Жыл бұрын

Seen the new LED explained video? so much detail covered! kzread.info/dash/bejne/gWyBlNxrmKzIkco.html

Hey..this circuit is really useful..can you please provide the circuit diagram for this..the PCB file is not useful for me..

Could this circuit be scaled to power higher powered LED's? Say a 100 watt CREE led running PWM frequency of about 100KHz? I would imagine that the main factor for this would be to select a proper MOSFET/FET for the switching and properly heatsinking it. In addition protecting the 555 timer from gate current.

@EngineeringMindset

5 ай бұрын

See my new MOSFET explained video here➡️: kzread.info/dash/bejne/c6uGrNWzlcKfnZc.html

Finally I can understand how 555 timer internal works.

This video is amazing, but I'm a bit confusing: at 6:40, you said that when input one (positive) voltage equals to input two (negative) voltage, output signal is low. However, at 8:05, when both inputs are at 8 volts, the output signal is high. Is that a typo? (I could be wrong)

@EngineeringMindset

3 жыл бұрын

Good point, it's going to reach 8.000001V momentarily which will cause the high signal output

i am really starting to appreciate the 555 timer. it is such a simple device that allows an easy to create timer.

@putra8283

Жыл бұрын

Sir i dont really know 555 timer really do in that video,, so what does it do in the video??

@nafyadgetachew7322

9 ай бұрын

​@@putra8283 it is a kind of almost a bistable Multivibrator that generates functions.

An LM317 would provide similar performance at a reduced cost. The amperes is well within the range needed.

Absolutely Excellent splained !!!! I want it in the Spanish version please, even I know English language, Thanks a lot. 👋👋👋👋👋👋

@EngineeringMindset

3 жыл бұрын

In about 1 week the Spanish version will go live

@alejandroperezkeogan8281

3 жыл бұрын

@@EngineeringMindset ok, I'm still waiting this too in Spanish......kzread.info/dash/bejne/h4SIt5inibbHfdI.html ...look if you can !!!! 🙏 Thanks

@EngineeringMindset

3 жыл бұрын

Translation is done, just waiting on dubbing and audio editing then it will go live. Hopefully next week

As usual, a very well expalined and informative video. Thank you! Just a small note, at 12:10 the shown frequency in the video is written 1.42 Hz whereas it should be written 1.42 KHz as you have said. Thanks again!

@phil6031

2 жыл бұрын

I think that's a comma ( , ) for a thousands separator, not a decimal point ( . )

I ordered this board and completed its assembly. But I can't get voltage from the output when there is voltage on the on-off button, please someone who knows help me

i did it.... it works on the breadboard..... but i have a question if i want to limit the output for only 9 led what alteration should i do to the plan if the power supplied is a 12v 280 amp capacity

@EngineeringMindset

Жыл бұрын

Seen the new LED explained video? so much detail covered! kzread.info/dash/bejne/gWyBlNxrmKzIkco.html

Why flicker instead of lowering the current to get a stable smooth dimmable light?

Your videos are fantastic. Even a layman like myself can understand. I have what I hope isn’t a dumb question. When the transistor drains the capacitor it looks like it does so by just connecting the drain on the potentiometer to the ground. The diode ensures current only flows one way. That makes sense. But isn’t the positive terminal of the battery still connected to the same circuit too at 12v less the voltage reduction of the potentiometer resistance and that resistor before the diode? I don’t see anything that would somehow tell the potentiometer to switch from the input to the drain circuit, but maybe I’m not understanding how the drain works.

@EngineeringMindset

Жыл бұрын

Check out NEW resistor video, everything covered! ➡️ kzread.info/dash/bejne/do2XrqiBl7mpnpM.html

@EngineeringMindset

6 ай бұрын

Seen our new Potentiometer Explained video? ➡️ kzread.info/dash/bejne/ipZhr7yGn7jak7Q.html

Why can't we use plastic instead of laminated sheets for generator stator cores in order to reduce drag?

@EngineeringMindset

3 жыл бұрын

You can, but it will be less efficient

@axieforever2985

3 жыл бұрын

But why and how, please make the video for this...

Small correction to anything from 3:20: The MOSFET actually doesn't change its resistance meaningfully after you applied more than its gate Threshold Voltage (in this case around 3V). That also means that the MOSFET isn't doing the "averaging" over the PWM Signal by putting out an "average" resistance. It actually switches with the same frequency the PWM Signal does and so do the LEDs. The perceived change in brightness is done by the human eye :)

@DasEtwasification

Жыл бұрын

​@@kennmossman8701 Sorry hard disagree. Look at the RDsOn vs VGs Graph in basically any MOSFET datasheet (provided a link below). Thats a very "elbow shape". Meaning that after the treshhold value (5V in this case) for VGS is reached the RDsOn reaches a steady state very quickly. If it would not do so and have a more linear characteristic the Mosfet would burn up due to I2R losses. There is a dependency but as you can see in the graph its very flat. And certainly its not used to adjust RDsOn (or by that the current), at least in no application I have seen so far. PWM is the way to go here, esp for LEDs.

@EngineeringMindset

5 ай бұрын

See my new MOSFET explained video here➡️: kzread.info/dash/bejne/c6uGrNWzlcKfnZc.html

Excellent explanation. I have some doubts. If we connect directly to the LED, it turns on (forget about regulating the brightness). You mentioned using a MOSFET, but I don't understand why it needs to be turned on and off 100 times when we are using a DC source. Please clear my doubts 🙏

@EngineeringMindset

5 ай бұрын

See my new MOSFET explained video here➡️: kzread.info/dash/bejne/c6uGrNWzlcKfnZc.html

Why does D2 - the discharging diode - has to be connected to R1 and D1?

@shauni_jade

3 жыл бұрын

Yeah I was wondering the same, plus it has a path from 12V for current flow, which will increase power consumption

@TheVonMatrices

2 жыл бұрын

Yeah, I have the same question. None of the diagrams ever show current flowing through it.

@TheVonMatrices

2 жыл бұрын

​@@shauni_jade Wouldn't that result in the light being lit 100% of the time since the pin is always receiving 12V?

Great video. Some algorithm food. 🍔🍔🍔

@EngineeringMindset

3 жыл бұрын

Hope you enjoy

مرحبا شكرا على جهودك أتمنا ان يكون مترجم الى اللغه العربيه وشكرا

sorry if I have some bad sentences in english, I will get back on track again. So tnx again.

Paul, can I dimmer a car lamp led 12000k to change the color from 12000k to 8000k? Thanks if you give me a tip.

@EngineeringMindset

Жыл бұрын

Seen the new LED explained video? so much detail covered! kzread.info/dash/bejne/gWyBlNxrmKzIkco.html

With the draw of the electric motor, I understand the need for this, but with the low draw of the LEDs why couldn't the potentiometer just be used in series, avoiding use of the MOSFET and 555?

@EngineeringMindset

3 жыл бұрын

Because the potentiometer wastes all the energy as heat, PWM doesn't

@5minprod

3 жыл бұрын

@@EngineeringMindset thanks! That makes this much easier to grasp

@orangeshaw2370

3 жыл бұрын

Because most circuits are NOT driven by batteries, the LED frequency will still most probably have the 50Hz ripple smoothed down to DC by bridge rectifier & cap. With PWM you can select a much higher frequency ✔

@orangeshaw2370

3 жыл бұрын

Yes it is a 100Hz ripple (as a result of 50Hz alternating current) but on LEDiode's some people are lazy/frugal & omit the bridge rectifier and only use one half of the wave (PROBABLY).

@EngineeringMindset

6 ай бұрын

Seen our new Potentiometer Explained video? ➡️ kzread.info/dash/bejne/ipZhr7yGn7jak7Q.html

Can we use a variable resistor to control current

@EngineeringMindset

Жыл бұрын

Check out NEW resistor video, everything covered! ➡️ kzread.info/dash/bejne/do2XrqiBl7mpnpM.html

You stated using a 555 timer simplifies the circuit. But using a different 8-pin DIP (say, an ATtiny25) would be MUCH simpler, with many fewer components, and more easily modifiable as well.

@altosack

3 жыл бұрын

@@kennmossman8701 - Yes, I didn’t think of the supply for the uC, since everything I build has one. I still think it’s simpler; while it may not be hard to just copy the circuit presented in this video, really understanding it and being able to modify it to suit another application is another story.