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Esc filter
#1
I am building a mini quad with a Lumenier 10 amp 4-in-1 esc. The instructions say......With all ESC's that have active braking we recommend you isolate or filter all sensitive electronics to prevent feedback / spikes. This is a 2 s battery set up and 1104 7500Kv motors. Do I need to worry about frying my vtx and camera if I don't add a capacitor?
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#2
for a micro quad that draws only 10A per motor, i think it should be fine... but no one can guarantee it's not going to fry your VTX for sure Smile
If you have spare capacitor just throw one in, it's better for your video as well as gyro anyway Smile
Don't be a LOS'er, be an FPV'er :)  My Gear - Facebook - Instagram - Twitter
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#3
(12-Apr-2017, 12:11 AM)Oscar Wrote: for a micro quad that draws only 10A per motor, i think it should be fine... but no one can guarantee it's not going to fry your VTX for sure Smile
If you have spare capacitor just throw one in, it's better for your video as well as gyro anyway Smile

OK, I want to use the smallest one I can.

So, it is an electrolytic capacitor and is soldered to the positive and negative where the power ( battery) wires attach to the pdb/4-in-1 esc.....................correct? Also what would be an acceptable voltage and value? I really appreciate the instruction which I will pass on to others.
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#4
(12-Apr-2017, 12:54 AM)CaCondor Wrote: OK, I want to use the smallest one I can.

So, it is an electrolytic capacitor and is soldered to the positive  and negative  where the power ( battery) wires attach to the pdb/4-in-1 esc.....................correct?     Also what would be an acceptable voltage and value? I really appreciate the instruction which I will pass on to others.

i just had alot of experience with caps. on my last build...seems my escs couldnt handle any braking voltage spikes..and my FC was adding to it...but i put mine on the BATTERY terminals...there is a line maybe with an arrow..that is negative, the other is positive, that is the longest wire..yes, seems weird, but they go on NEG and POS...  you should put it closest to your problem..they say!!..i say BAT.TERMS.

i used 470uF,  on my 3s build RS2306 2400kv emax motors, emax bullet 30a esc, 75c 3s 1550mah batery,(AND exactly same set up BUT emax 2205 2600kv red bottoms)
and..i used 100uF  on 1306 4000kv emax red bottom mini and 3s 850mah battery 30amp bullet escs.. 

everything is fine now...i didnt have a problem with frying things,,it send back voltage spikes to my FC and sent my TX into failsafe...bad bad things happen then.. your LC filter should have CAPS. on it..the yellow things are capacitors...i have a LC with a 470uF on one of my quads..but the 12v regulator before the 
LC filter blocks the spike and sends it to least path of resistance, via full voltage power wire to my FC...good thing i was only running 3s...4s prolly would have fryed my FC..

BUT...my point being is that if you are running 2s you will NEVER need a 12volt regulator and a LC filter that should be before your VTX anyways, should be fine...but im not paying for anything if it frys...im just sayin...2s dosent seem that it would have effect...might help VID. quality though.....hope that helps....lol...

[-] The following 1 user Likes nitro20%'s post:
  • CaCondor
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#5
oh....and i just built a skreicher yesterday, it has 3100kv eachine motors, dys XS20a dshot600, 3s 850mah 40c and F4 flip32c FC. with LC filter..NO capacitor..it is fine...no freak outs..

im guessing that its the motor size that creates bigger spikes..hense "stator" that also creates power on dirt bikes...

[-] The following 1 user Likes nitro20%'s post:
  • CaCondor
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#6
Nitro 20%,

Thanks for the good info. Seems like there is always some new problem to deal with on the quad builds
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#7
(14-Apr-2017, 07:59 PM)CaCondor Wrote: Nitro 20%,

 Thanks for the good info. Seems like there is always some new problem to deal with on the quad builds

i know right...i think we are at the end of it...there is just no more "upgrades" that a human could even comprehend as being BETTER..so what we have now is the best ever...what, F7 stmus? just walk your quad around a track, put your goggles on SET YOU TX DOWN, sit back and go for a ride...NAAA,, ill fly it, thank you...

or even better yet,,, "head units" we could just THINK ourselves around around a course...LMFAO X10....i get dibs on the development of that..

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