Bruce, you are (and have always been) one of the greatest contributors to the hobby of R/C model flyingand R/C drones. This is information that EVERY R/C hobbyist should understand before they even get their wallet out for the first time. Better still, it's bloody FASCINATING ... even for us Old-Timers. Many Thanks from the UK.
@redpony666
9 жыл бұрын
You are the best in the west on the east side of town. Frankly my good man you are a truly dedicated philanthropic educator and you kick ass.
@DanWillFixIt
10 жыл бұрын
when you need to really fully understand how an rc component works you go to school and watch Bruce's videos/class....Extremely informative video! Excellent!!! Thanks Bruce!
@svroundabout
8 жыл бұрын
I just learned more in 25 minutes than I learned in an entire semester of circuits in college! Showing my kids this so circuits don't seem so daunting as they did for me many years ago. Thank you!
@tekoppentekoppen761
8 жыл бұрын
I feel the same way. This guy is pretty much the best teacher I have listening to during my entire life.
@dougmcken
8 жыл бұрын
I'm 57, have an honours degree in civil civil engineering and have learned FAR more about electrical engineering in the last year by watching these videos by Bruce and a few others than I did at university. I'm also enjoying it far more this time round; it's not an ordeal, it's an adventure. :-)
@messenjah71
8 жыл бұрын
I feel exactly the same way. Studied electrical engineering for a short while in college, yet I've learned more about electricity through rc trucks than I ever did at school.
@stevegauth30
10 жыл бұрын
Ya know, I've asked this question a few times and never really got an answer. Thanks again for enlightening me, as you have done many times. Your a very smart feller and a lot of us are lucky to have someone like you to learn from. Thanks.
@rablm3
10 жыл бұрын
The switching term you've described is called Pulse Width Modulation (PWM). Thanks for the video, great job explaining the concept.
@quadcopter1023
9 жыл бұрын
Taking me back to my radio ham studies back in the 1980s.... great way to explain things.
@davidr5343
10 жыл бұрын
Thanks Bruce! You are one in six billion - the only man on earth producing such great, informative videos.
@mymailmo69
8 жыл бұрын
My god sir.... with all due respect you are the best to learn electronics from.. Ive been trying to learn electronics for about id say 7 yrs now on my own and never have i learned about any certain electronics without having to go over the explination atleast 5 times to be 100% sure i understand. But the way you explain things yoy make it so obviously clear i am so in tune with the way you teach! if i lived near wherever you teach i would dfinately take your class...shit you may not even be a teacher ill still pay you directly just freakin teach me please...You are one awesone dude! Good job sir!
@Danzeeman
2 жыл бұрын
Another THANKS for that vid Bruce 👍🏻 Been flying models for many years, but never took the time to understand the workings of those BECs, nice and clear explaining now did the trick 😎
@furulevi
8 жыл бұрын
Hi, could you please explain the difference between an SBEC (more expensive) and a Step-Down Buck Converter (cheaper). Thanks in advance!
@stukingman6438
10 жыл бұрын
EXCELLENT EXPLANATION! The more I learn, the more I know how much I don't know. Please keep producing these great videos - many of us depend on them!
@Nightsd01
9 жыл бұрын
That's amazing. Thanks for making this video. I'm currently making a quadrocopter from scratch, I'm programming the circuit board, radios, etc. and I recently realized that the brushed motors I were using didn't provide enough power to get it off the ground. Now I've switched the design to use brushless motors with some good ESC's. Fortunately I designed the circuit board to run off of 7.4V, so I won't need a BEC, but this was a fascinating video nonetheless!
@herminigildojakosalem8664
6 жыл бұрын
Some people just have the inate talent to explain and "show" things well. Even in ages past there were the village storytellers who awed their listeners with how well they described their topics. This video also shows good use of visual "teaching aids". Thank you for making and posting this video as well as for the other videos you've posted before. Mabuhay! (Long live!)
@mattjtouma
4 жыл бұрын
Excellent video! Very informative and easy to understand. As an electrical engineering major it's really nice to see more advanced topics in the RC hobby
@laragrimes855
9 жыл бұрын
Thanks for clarifying a subject that is rife with acronyms. Excellent job, as usual.
@logansportpilotrp8174
5 жыл бұрын
Hey Bruce,salutations from Ford City PA-USA,great video,no one knows these electronics quit like you,thanks again for the great info.
@jasoneyes01
9 жыл бұрын
Outstanding! This is a very good introduction to linear versus digital power supplies. Honestly I never saw this explained on an oscilloscope, Now I know!
@TheEPROM9
10 жыл бұрын
Clever the old switch mode PSU's. Taught me some more on the details of how they work.
@davedeja
10 жыл бұрын
Great video, Bruce. I knew what the BEC did for me but now I know how it does it. Very good information.
@8mrLuka8
8 жыл бұрын
Really interesting. It was nice to see the real world on the bench. Thanks :)
@possumheadcarpentry
10 жыл бұрын
Thanks Bruce, you have just made something complicated simple.Hoping to come over to see my son and family next xmas, will try and head to toke.
@cocemojoe
9 жыл бұрын
spectacular, three cheers, and five stars. Thanks for your contribution to the RC industry.
@BelperFlyer
10 жыл бұрын
Very good talk, Bruce. Certainly simplified and some might say over simplified, but it explains the basic idea very well. Certainly as much as the average aeromodeller needs to know. I'm a retired electronics design engineer but I still enjoyed it and watched the whole video.
@ronggrimard9430
7 жыл бұрын
Always enjoy your educational videos they are very helpful and I like your style of discussing these subjects...please keep up these Great classes...Thank you
@skysurferuk
10 жыл бұрын
Love your analogies...Keep 'em coming, Bruce, cheers, mate.
@joet-sk4sw
8 жыл бұрын
thanks for the awesome detailed info on the difference in bec systems, very helpful..
@VictoryGuitarShop
10 жыл бұрын
Fantastic demonstration, keep them coming, Merry Christmas!
@RCbattler
10 жыл бұрын
Bruce a quick question, So the ESC's BECs are fastefull, right! Will the ESC UBEs still waste some power even if they are not plugged in (in case i am not using ESC's 5V power)? I my 5V power i am getting from separate SBEC.
@drakevelazquez8728
4 жыл бұрын
Very good descriptions and examples. One note From a beginner. That oscillator I think would be new or unknown to most newbies. It is for me. That among the work space being cluttered with other items and not showing how you connected things to measurement tools and not being able to see your work table makes it hard to visualize in the mechanical side If you just made a mental note to check camera angle and to clear any unneeded items on work table it would be a perfect explanation and show!! Thank you for the videos learning a lot.
@fly15levy7
10 жыл бұрын
Great draw whiteboard explained and show power supply and oscilloscope. I understand them but not words. I m sure say thumbs up
@darrellking943
10 жыл бұрын
Just wanted to let you know that your video was indeed very helpful to me. I have been building models for a while now and always just assumed that the mgf of the product was giving me the right stuff to work with. But that is not always the case. Anyway thanks for the helpful video.
@machekl
4 жыл бұрын
Great video!!! I enjoy very much learning from people like you. Thanks a lot for sharing your knowledge
@upde
10 жыл бұрын
Hi Bruce I know nothing about electronics but started wanting to learn after I bought my first Phantom. Now I'm hooked and I'm trying to soak up everything I can. Lot to learn for an old guy like me but you make it interesting and understandable. I enjoy your post and hope you keep it up. I'm working through your previous post trying to learn all I can. Regards, Dave
@CarminesRCTipsandTricks
6 жыл бұрын
I have really always wanted to know how a Bik works. Thank you very much for that!!
@Flash1940
10 жыл бұрын
Very good Bruce.....you even did it without even mentioning duty cycle !!!
@NolaanOne
9 жыл бұрын
After watching few of your videos, Sir I've gotta say : you are truly awesome!
@TheRoggan123
10 жыл бұрын
Great video! I was wondering what the difference between the different BEC's where, this really made that clear. Now I'm extra glad the ESC's i bought recently where all SBEC's :)
@da959
10 жыл бұрын
Merry Xmas Bruce! I already had a somewhat basic understanding of how a linear vs switching regulators worked,but this video helped just that much more. Always good info even if you actually think that you already understand how things work.You NEVER get too old to learn...
@ianholt1
10 жыл бұрын
Another great educational video, thanks for making thinks clear once again Bruce.
@tomsvircev1716
10 жыл бұрын
Thanks for a great video! You've taught me something I've wanted to understand for a while. Now I have to go check all my models BEC's!
@tottoshobby
5 жыл бұрын
You are a really fantastic educator ! I would love to have had you as a Teacher ! You make it so understandable ! :-) Simply Great !!!
@tsviper
10 жыл бұрын
Thanks Bruce, nice and informative. Hope you have a warm Christmas in the southern hemisphere. Greetings from a windy and cold Norway
@SanderHelling
7 жыл бұрын
Thank you for this very informative video! I'm reading up on BEC's because apparently my new Avios BushMule is at risk of havinf brown outs when using 4S. The 2 inbuild BEC's (liniear) are supposedly not up to the task. I'm was looking into what the BEC liniear and switching meant, for I'm going to get a 1 SBEC to replace the 2 inbuild BEC's. Really well explained, even I could understand. Thank you Sir Bruce!
@fotoamgamgfoto3695
9 жыл бұрын
Very good explanatin for begginers! I am familiar with step-down circuits, I already built some, but they are to big to fit on my copter :) I wish to mention that switching step-down dc-dc regulators are working on about 60-86% efficiency, so there is power you loos and some heat generated on it's Schottky diode and the coil, but of course a very small amount compared to linear regulators. With the one I've built by myself using high quality LOW ESC comoponents and overrated 430uHenry 3Amps coils I could reach about 56% efficiency dropping 12Volts to 5volts. So with 1.34Amp current drawn at 5Volt output (6.75Watts) it drew from input 12volt 1amp (12watts) and only 5.25Watts gone to heat. With linear regulator 7Watts would go to heat, and the manufactured circuit's have much more efficient design, they can reach 80% efficiency even with those 130-150 uHenry coils they put on there. I think SBEC is the same but on a compact size. There is a coil so you can look for it of there is a coil it is a switching one. Now first time I am building a quadcopter and ordered the cheapest ESCs I could, they are 30A ones and has 5V 2A BEC or UBEC but there is no nfo are they switching ones or linear. Circuit is heatshrinked to I cannot look for the coil unless I cut the heatshrinked tube and remove the heat dissipator plate but I think it is too thick to have a coil and too cheap. As I know linear regulators can be connected in parallel with no issues, so what do you think about this: - connecting each ESC's 5volt output wire in parallel and powering my RX from them, so not lugging into the flight controller output rail as there is a diode in FC dropping voltage. Only the signal wires are required between the ESCs and the FC motor outputs as 5volt is not needed by the ESC and ground rail is already shared. If I connect the 4 linear regulators in parallel I could reduce the current passing through them, but the one with the less resistance will still have the more heat. - I have also a plan to put serial Schottky diodes before connecting the 5volt outputs this way reverse voltage protection could be added, there is a voltage drop, but it is based on the current so it would share the power between the 4 ESC's as the one with lower resistance gives more power the diode will have higher voltage drop which will reduce the current flow as current flows from highest voltage to the lowest and other ESC would have higher voltage. This would happen in very fast switches. What do you think about those? Could they work?
@jeremysaunders9916
10 жыл бұрын
Bruce as usual very interesting, very helpful to me in understanding what is going on and why we need these different components. All the best for the new year,keep up the good work you do so well.
@HaraldKubota
10 жыл бұрын
Bruce, very interesting video. When building small stuff for my RC models (e.g. as simple as programmable light), I need 5V via BEC (2A). Light is independent from FC, so the FC needs a BEC (
@srikanthpeddara6773
8 жыл бұрын
Respect to you wise sir...awesomely explained. Thank you for the crystal clear explanation.
@slinkyfpv
10 жыл бұрын
Great job! Simple, informative and easy to understand. I always enjoy your videos. I would like to see you dive a little deeper into the technical parts of the inner workings.
@Trent772
10 жыл бұрын
Great video Bruce! It's always good to see the theory working in practice!
@herminigildojakosalem8664
4 жыл бұрын
I've learned all about these before elsewhere when I was so much younger and I don't know why I take great delight in watching you explain what I already know. BTW, (off topic) I've yet to see a video of yours on RC helicopters. I've seen a couple of your "drone videos" and certainly several "plane videos" but no "helicopter videos". Have you lost interest in them? Are they "passe"? Are we, whom have just started in this hobby (in helicopters) so backward and left behind? Thank you, Sir for these great videos. They're so informative. You are one great teacher!
@marcotorriani2793
10 жыл бұрын
Bruce: Merry Christmas to you and yours. Fantastic video, as hallways. I am learning so much!!! Cheers from Canada.
@lejink
10 жыл бұрын
I've been watching the EEVBlog for a few years now.. I loved all the references to it. Subscribed!
@ReggiePerrrin
10 жыл бұрын
Great video, very informative. One question: do you get any RF noise off the sbec? If I remember correctly a digital signal has an 'infinite' frequency at the point it transitions from low to high (i'm recalling theory from years ago, so I could be wrong :) )...cheers
@davegreathouse7992
9 жыл бұрын
That was awesome. I used to fall asleep in school....not for this one! Great job. :)
@WingTipAerialFilming
10 жыл бұрын
Great video Bruce, very well explained and it's great how you back up the theory with experimental evidence. I have an AX 40A brushless ESC in my Skywalker which contains an SBEC in one package and it hardly gets warm on account that the Skywalker doesn't draw anywhere near that sort of current. Separate ESC's and BEC's must be less common than combined ones as I've only personally ever seen people with the later ones.
@mwigman0001
7 жыл бұрын
Very, very nice explanation, thanks Bruce!
@DollarTreeFlyer
10 жыл бұрын
Wow I always love to learn more and more about this rc plane stuff and you always seem to make it so easy to understand... plz keep making this type of video...
@Mattwonga
7 жыл бұрын
Quick question, is a polulu 5v 600ma considered a "clean" power source for my vtx? will i get some voltage spike in my vtx from my esc, or is the polulu able to stop those spikes from damaging the vtx?
@rcjoseb
10 жыл бұрын
Very nice explanation. It should also be mentioned that when using SBECs on multirotors, only one SBEC should have its red wire connected to the flight controller. All other red wires should be left disconnected by pulling the pin out of the plastic connector.
@rcmonster99
10 жыл бұрын
Magic !!! I wish my electronics teacher was as good as you when I was learning
@FrodeEskelund
9 жыл бұрын
Just to clarify: UBEC is an acronym for "Ultimate/Universal Battery Eliminatior Circuit", which by today's understanding is a switching regulator. SBEC, however, may mean two things: Switching (as UBEC) or "Super", which may mean anything. Check the description of your supplier, but in my experience, if you go for a "UBEC", you'll get a switching BEC.
@LWJCarroll
10 жыл бұрын
Thanks Bruce...that was very edifying for me...now I can safely make a reasoned choice when buying ESC's... and I will most likely referback to this later Rgds....Laurie
@PrismWarp
9 жыл бұрын
Great explanation but I have one question. You showed the 12v on the input and 5v on the output. I was wondering where were your leads on your oscilloscope attached to on the SBEC to show the switching? The video shows the affect on the scope but does not show where the leads were attached to on the SBEC? Was on lead attached to the 12v side and the other on the 5v?
@ypsonar
7 жыл бұрын
Very knowledgeable thanks to increase my knowledge of bec . . May Nature bless you.
@KickassAlex92
10 жыл бұрын
Awesome video, thank you for taking the time to make this video Bruce!
@franciscoduran3688
Жыл бұрын
Extraordinary video and explanations, thank you!!
@jay011488
4 жыл бұрын
I had fun listening to this review and it's very conducive. Thank you so much!
@gavansexton9234
8 жыл бұрын
Great job as usual Bruce, keep it coming
@GaryDarling
10 жыл бұрын
Great video Bruce, very educational and helpful. Keep up the good work!
@extansegura
10 жыл бұрын
Excelent video Bruce, now i understand more but, could you please share where we would want to use Lbecs or Sbecs? and whats the Advantage or disadvantage of using them.
@faYte0607
10 жыл бұрын
Thanks so much for the vid. Quick question: how do I know how much amp the BEC is drawing? (Referring to the 1A example at 9:15) Also, I just use the formula Power = Current x Voltage to find the power, and that's be the max power (watts) my fpv gears can be hooked up to the BEC before it overheats/smokes up/whatever?
@buckstarchaser2376
5 жыл бұрын
Thanks for the simple and direct explanation. I am already familiar with these two types of BECs, but a practice that I've seen in some videos has me confused. I'm hoping that you (or anyone familiar with it) can offer an explanation. The situation is that some ESCs will contain BECs, and with a multirotor, that amounts to 3 or more regulators. I've seen some enthusiasts clip the wires from the BECs with the intention of using a dedicated regulator. This seems a bit wasteful since computer CPUs and graphics cards use multiple switching regulators to give high current power at very low voltages to the same power line. I imagine that multiple BECs would provide a similar reinforcing effect on the low voltage power supply, and so it's confusing that they would opt not to make use of it. Granted, since I've seen videos of removing the power-out lines from ESC BECs, technology has marched on and now PDB boards and possibly FC boards now have their own power regulation. I would personally be interested in keeping the BECs in use, so I'd like to know what the problem with that is, rather than learning the expensive way.
@themadhatter196
5 жыл бұрын
I'm having problems with battery power (3s-6s) powering a VTX. I get blurring in the video feed. Should I use a bec or sbec for regulating the power for the VTX?
@paulhlange
10 жыл бұрын
Outstanding Video and teaching sessions....I intend to view and study all of your releases.....can't say thanks enough....I enjoy your speed and delivery as well as providing several passes of examples to help get the specific points covered. One question I have is the actual application/deployment of a separate UBEC with a Brushless BESC....should we cut the middle (Red) wire of the BESC and why?
@P222RL
Жыл бұрын
Hi ,I heard that people install a receiver battery parallel to the BEC, they do this as a fail safe in case the BEC fail or in case the servos draws too much current, but will it create others troubles such as noises, current flows backwards to the BEC etc ?
@RobertDrescher
9 жыл бұрын
I keep on imagining Bruce shouting "1.21 GIGAWATTS!!!" Only the hair is the other way 'round. XD Great job on the comparison between the two.
@tannersilva4215
10 жыл бұрын
How does a flight controller affect this equation? If I have servos drawing a lot of amps, does the flight controller put those amps all on one ESC? Or does it distribute those out evenly across my multiple ESC's (for example, a Naza controlling two servos as gimbal)
@PhilofSouthport
10 жыл бұрын
One of your most enjoyable videos. The demo with the oscilloscope really drives home your points. How about a little more debt into how a switching BEC switches the voltage on and off? Thanks Bruce
@RoboticSolutionsTECH
7 жыл бұрын
Hi , I have an Engineering question regarding brushless electric motors and ESC.If I apply 1 volt via throttle to my ESC but the motor spins faster than its KV rating (ie 2000RPM on a 1000KV motor) because of wind pushing against the propeller during a steep dive of my drone, will the ESC try and slow down the motor, give no voltage or continue to give 1 volt which will end up reinforcing the 2000RPM?
@oconnor993
10 жыл бұрын
Another winner, very important.Thanks.
@jisa4gamers
8 жыл бұрын
Very Very good Explanation , thank you Sir . Keep up the good work
@GioBen68
10 жыл бұрын
Great video Bruce. Learned a lot. Thanks
@harshitgambhir4197
8 жыл бұрын
I am looking for a remote control and receiver module that just has two buttons(Start and Stop). I've been looking for such a remote for days. It might have extra features. Could you suggest me something?
@alvarsamt7316
9 жыл бұрын
You are a very good educator!
@nxxxxzn
9 жыл бұрын
Alvarsamt Indeed he is, one of the best I've seen on KZitem.
@reezlaw
10 жыл бұрын
Now nobody has an excuse to ignore these things anymore! One thing you didn't cover, though, is the difference between SBEC and UBEC (if any).
@hasenhase3428
8 жыл бұрын
Hi Bruce, great InformTainment! is it possible to recognize what kind of BEC is soldered on some cheap Chinese ESC (30A simonK red shrinked 5$/pcs), as i don't trust their specifications. The other question, if I unplug the middle servo wire from the ESC with integrated (L)BEC, is the BEC still consumpting some energy or disabled? thanks in advance and regards from Germany
@MrSenorhappy
9 жыл бұрын
Great video, thanks for the time and energy you put into these, greetings from California :)
@BASANTABHATTARAI
8 жыл бұрын
thank you dear for all tutorials dedicated for us..
@simmyqux
10 жыл бұрын
Excellent vid Bruce! Had always heard that the switching BEC was better but not the reasoning behind it. Could you also show the proper wiring for putting a separate BEC in a system vs one with a built in BEC on the ESC?
@padroooo
6 жыл бұрын
Thanks Bruce, that cleared so things up for me.
@Crashed121
10 жыл бұрын
Brilliant and informative video. I've learnt something today. Keep up the good work. 😊
@scottthompson2481
10 жыл бұрын
Bruce , please can you help me , I am building a hexacopter and I have bought , hobbywing platinum pro 40a speed controllers with a super BEC . I didn't realise at the time that my DJI Naza flight controller has its own BEC , so no BEC on the speed controller is needed , what would you advise . Thanks Scott
@benemdav
10 жыл бұрын
Thanks Bruce great video! I learned a lot! Happy holidays
@craiggerbich5598
8 жыл бұрын
Hi there can you please explain what sort of Bec I need to run JR 4.8v servos from a 6V supply. I have a switching Bec but it says not reccomended for use with nimh battery's , why do they say this?
@jb4688
10 жыл бұрын
Merry Christmas, Bruce...always enjoy your videos. I do have a question. Since the SBEC is a switching regulator, would it likely be the source of an increase in noise which could possibly interfere with such other electronics like FPV equipment?
@xjet
10 жыл бұрын
Yes, there is potential for that -- which is why I'll be doing a follow-up video on noise sources, including SBECs.
@dominictitterton2108
8 жыл бұрын
Amazing video, very easy to understand
@andrewcarolus4003
7 жыл бұрын
Excellent job...time to go build the circuit myself
@stufraser1825
8 жыл бұрын
Cheers Bruce! Really appreciate all your videos, i'v watched loads of em! Just wondering if you might share a little more wisdom on this BEC matter? Thing is, i just bought a power distribution board that has a 5V BEC built in, saves on weight and limited space in a 250 miniquad, Wehey! BUT, the 5V BEC is described as being "DC/DC Synchronous buck regulator, efficiency up to 95%"... whats that mean?!" Also, it has "continuous current of 3 Amps" I'll be using 4S LiPo, Does this mean that i'll be wasting 30W of power in heat!? or simply that the 5V BEC can handle a draw of up to 3Amps? Another thing that i cant seem to find an answer to is, will i be safe to power a few components from the one 5V BEC, i'm intending to power a Naze32 + camera +OSD + maybe a few LED lights. is that totally safe, or completely bonkers! I'm new to this stuff, forgive me. Any light on this matter would be massivley appreciated, i'll be watching many, many more of your videos! Thanks a bunch fella! P.S Oh yea, heres a link to the gadget in question. www.mateksys.com/?portfolio=5in1v3
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