Low ESR Capacitors I Use For My Builds
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- čas přidán 28. 08. 2024
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470uF 25V
www.banggood.c...
1000uF 35V
www.banggood.c...
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Simply the BEST youtube channel for quadcopter tech!
Thanks
Cool, perhaps consider polymer electrolytics, they have lower ESR than aluminium electrolytics. Great at absorbing ripple and smaller, lighter, longer life but a bit more expensive.
Sounds like a really good deal! you have to make sure that their not rewrapped coming from China. They have used shrink wrap Rubicon labels in place of the Cheap cover!
as well as practicality, I love the way caps look on a copter. Makes them look more badass and industrial.
I Don't know if you are aware the 1000uF/35V capacitors linked are YXL type which have much higher ESR value according to their specs.
I run a 35v 470uf Panasonic cap on each of my KISS24 amp ESCs, on my Chameleon and it makes my quad sooo smooth, It's really noticeable. I did it at first to clean up a bad video signal, and it did not help, but I noticed how smooth it made my quad, so I kept them on. Bad video turned out to be antenna grounding on the Aluminum bracket they provide.(O-Ring smashes and does not last long) I moved antenna to carbon top plate and so it did not touch the Aluminum and it cleared up instantly.
Magic Smoke FPV how did you connect your caps to esc? Did you solder directly power wire on esc?
your using different value capacitors 470 microFarad and 1000, Search Understanding capacitors and read it 3 times
Authentic panasonics or Elna's usually sport the lowest ESR in all categories(goes back and forth between these two). However, counterfeits are abundant.
good video, when I ask questions like this to the techs at Mouser or Digikey, They have no say.
Ordered Panasonic from Conrad once and I got unbranded caps. Hope these from BG are the real deal. Ordered them immediately.
Caps are tricky thing, some of the better more expensive ones are used by hi-fi audio enthusiasts known as audiophiles and sometimes musicians who mod their instruments. Also by audio manufacturers. And what happens is that some particular cap gets popular by an audience who can pay more. And the price rises. And most of the time you can get same specs cap twice as cheap, but it’s not known or accepted in audio industry. For quads we should keep away audio caps as they are more expensive due to usually false perception of “better” sound :) Remember those guys who say 100$ HDMI cable has better sound and video comparing to 10$ one. But we know the data is sent digitally and no HDMI cable will make bass deeper :)
Not the same if we talking about low ESR capacitors. Regular electrolytic capacitors aren't that good for ripple current filtering (which we need to get rid of ESC noise in FPV video) than low ESR ones. Because of that they are 4-5 times more expensive.
Yes, for the low ESR, but there are some manufacturers, which are targeting to audio maniacs like Vishay, Audio Note or the old Elna's. Rubycon's and Panasonics will be trashed by audio guys, but they work perfectly OK on quads. And audio guys can create and believe to so much pseudo-science, I just can't believe :D Most of them don't even know what equipment is used in studios to record their music they want to "recreate" best on their $30000 speaker set :)
Maybe you could/should look into testing other types of caps to use instead of or piggyback with the electrolytic caps such as film or ceramic caps?! Might be super valuable info. ;) :)
I would love to see the results of more cap testing. I've been using the Panasonic FR series of caps and I wonder if they are really the best.
Great video, interesting stuff, thx! What do you think, are higher caps (eg. > 1000uF) preferable? And are 35V caps really enough for the voltage spikes we see in modern esc with 5S?
BTW: I'm waiting with anticipation for your Typhoon esc videos... ;)
I was just wondering about capacitors. Thanks for the video!
is it safe to assume that ceramic capacitors are generally lower esr than electrolyte capacitors?
Assuming that you can connect them directly smd to your signal source.
You should try some cheap low ESR caps from aliexpress.
They are really good.
For me in slovakia shipping takes like 7-9 days if it is small think, like caps.
matek should definitely MORE FOCUS ON THE QUALITY of their F405 AIO !!! I did purchase four matek AIO FC, 1 from eliexprass and 3 from banggood. eliexprass - the fc was junk, I got replacement which was junk as well. banggood - first one is ok with 1 cap, the second one can fly only with 5 !!!!! caps, the third one is just installed in to the new build which is not done yet. so far my result is that every second matek's aio fc is faulty, nothing to be proud at.
Really nice, bro. One question: more uF is more filtering, right? I have a few 4200uF. LOL
A taller glass is also more quenching, but you might not be that thirsty right? It's overkill, and not necessary.
Banggood won't send lipos to me. And they have awesome prices. :( From AliExpress I already had to cancel and ask for refunds because I never got the lipos. :/
I always wondered what low ESR means. I have a bunch of capacitors and with a component tester I found out I got values like 0.2 - 0.3 ohm or values like 0.07 - 0.19 ohm. Is low ESR the later interval? Can you be more specific what ESR value is good for filtering out noise in FPV systems?
Have you measured the ESR ? may not even be low ESR
Because...bangood, fake :-)
dude at laesast make them same capacity, and then test them
Nice video bro! What's your opinion on using TVS Diodes? Can they help?
Do i need to use a 450uF or 1000uF for my 4 inch quadcopter? And do i only need 1 on my batterypads or do i need to put one on all my escs?
just buy caps from audio store... besides caps are caps... whether you apply it on a quad or in a hifi system....
when i seen my capacitors are made by a company called chong, i kinda lost heart a little... hehehe i dont have noisy video but i do have the black lines permanently on my fpv, i think its from my rx since it doesnt change during flight. and capacitors dont seem to address that kinda rf noise
Check to see if your antenna is touching the frame or any metal. I had the same problem on my Chameleon, and almost swore it off forever because I could not get any video Tx to work without lines no matter how many caps I used. I swore it was because my FC Rx and video Tx were to close, but it was just the antenna touching. I had same black lines that didn't change also.
ah thanks, i was just thinking and my vtx antenna is touching my top deck... i'm almost positive theres no lines before i put the quad together so i should pay attention next time i have to dismantle the frame, my rx is verticalon my top deck and one under the arm pointing forward, like most people do now.. and my vtx is straight out the back
I run the same configuration. I found it was ok for my antenna on my Chameleon to touch the top deck, it was just when it touched the Aluminum for some reason or went through the hole for the antenna, it had bad lines. I had the same lines on my Martian II, and I separated the brass connector from touching the top plate with 3M double stick and it still did not help. I changed the antenna to a new one and it went away on that quad lol.
i have the inmortal T crossfire antenna attached in the arm, and i have gorizontal noise, also in a Chameleon frame :S I don´t know what can it be. I have capacitor 1000UF 25V, and the TBS UNIFY PRO is with foam, not touching the carbon fiber :S. Also the vtx antenna maybe touching the aluminium black deck/ piece? Any suggestion please?
I still have some noise when using the 470uf capacitor. Will it make a difference if I solder on a 1000?
It's on a 4in1.
Tony It could. Might help more to add a 2nd 470uf instead.
Diminishing returns, but higher capacity always means less ripple.
What about Chongx brand?
Dude what the hell are you talking about. They're two different values. Of course the result will vary. Both Ruby and Panasonic make very good caps.
hi, i have a noob question, what happen if u use a standart capacitor
Hey, I have a 1000uF 35v low ESR cap, would this work or is it to high?
Hey man, you are probably familiar with Kabab FPV. You both offer interesting ideas to check and lately he mentioned something that you may be able to look at. He said that braided (maybe also twisted) cable running from ESC to Motor makes it harder for ESC to read motor state. It makes sense :) But is it something that could really affect the performance?
Drone Hero's agree on all that you said. I am always cutting wires for perfect fit, and I am twisting them to minimise the EM radiation and the effect it has on electronics onboard. But the idea presented was that if you twist those 3 wires that goes from ESC to MOTOR that it would introduce more noise to those wires thus the ESC would have harder times to guess what is motor doing.
what do you mean by twist? soldering in no straight line? Thank you.
Hi Can i use 25V 470UF on each ESC on my 4S setup
It makes no difference the brand of a capacitor, only its value and material it's made of
what can i use on a 1s and 2s setup?
Buying low ESR capacitors in AliExpress, Banggood or Ebay is the same than throw that money avay. Unfortunately low ESR capacitors must be purchased from trusted sources - even Amazon doesn't qualify for that.
Where do you recommend to buy them? Tnx. :)
Known international online shops are Mouser, Digikey and Farnell. In Europe also Conrad and Elfa. If your city have electronic component store then go there. if you know someone in your surroundings who are in electronic repair business, ask him - he probably will know other stores in your surroundings where to get legit low ESR capacitors. Also check the list of known low ESR capacitor manufacturers and series in end of post in Oscar Liang's blog - goo.gl/iKfBZf
Thanks man!
Big business in china to rewrap caps and sell as what they aren't. It is not in Amazon, ebay, or banggood's interest to scrutinize every item offered, and support the buyer beware line of thought. Mouser and digikey do not function this way and make sure all inventory is traced directly back to the source.
Nichicon are the biggest offenders, with panasonic pulling in a close second. Rubicon isn't a 'valuable' enough brand to make it worth it, for now, so you are less likely to find counterfeits of them.
Please consider to test as well ceramic capacitor arrays like Product ID: 1133294 on banggood. Keep up with the good stuff buddy.
Nice
Bonjour man...have a nice week... 😪
What about Nichicon? :^)
Try nichicon caps
You live in europe right look ad conrad.nl or .com i got some it says BG 1000u 35v f3 they got them whit difrent type of thicknes wire maybe good to look at btw dutch customs are the worst😆 that f200 frame i had to pay €20 extra 😒
Bennie Leip. Bij bg moet je altijd priority direct mail kiezen dan betaal je nooit invoerrechten. Doe dit al 1,5jaar. Express etc betaal je altijd invoerrechten..
Fpv-Droneracing ja daar kwam ik ook achter (beetje te laat😆) maar bedankt voor het zeggen zoiezo👍🏻
u cant tell if they are real with out testing though lol . there are tons of fake clone caps out there. i like the real rubicons they work great dont they my friend
R
I thought the raceflight team stopped shipping their boards with Rubycon b/c they were not good caps. they have a video going over different caps and their internal resistance. Bardwell also had a video with a spreadsheet listing many caps and their IR, panasonic was at the top docs.google.com/spreadsheets/d/14M4Z0GPJp3u7L3bmYBizHm3Leg0XOCmAWQOx_wEgEng/edit#gid=1538665578
I'd like to know more about what you find as well
Yeah.. I thought the panasonic FM is the way to go..
35V vs 25V?
Higher volts, changeable The value (UF) must remain the same.