Built my first 5" Quad but installed a normal 1000uF capacitor, not Low ESR because the one that came with the ESC was too big for the capacitor cut in my frame.
I'm experiencing some minor noise issues with default betaflight filters/PID, so as the rest of the build is clean the issue might be the capacitor.
The normal 1000uF capacitor is installed directly on the ESC power input and there isn't enough space inside the frame, so I'm thinking about soldering the Low ESR 1500uF capacitor on the XT60 plug, while keeping the normal capacitor installed inside, to see if it solves the noise issues.
Question: A normal 1000uF capacitor in parallel with a Low ESR 1500uF shouldn't cause any problems, right? Too low IR maybe?
Thanks in advance!
#Capacitors in Parallel
heavy rampart
limber vapor
it may be fine, as capacitor values add, however, one being a low ESR might have they start ringing, basicaly passing a spike back and forth. It might be best to take off the non-low ESR when you install the other.
heavy rampart
it may be fine, as capacitor values add, however, one being a low ESR might have...
Interesting. Do you think it can make the filtering any worse though?
I know it's not ideal, but as it's quick an easy to solder on the XT60 I was thinking of just trying it before tearing the whole build apart
limber vapor
it might get worse, worst case senario. or do nothing. or be amazingly better. impossable to say without trying it. I think this just needs trying. But if it's worse, that's why.
heavy rampart
it might get worse, worst case senario. or do nothing. or be amazingly better. i...
I'll try then, thanks!
limber vapor
😁
limpid herald
That's not how filter capacitors work there's zero chance it'll "pass a voltage spike back and forth".
@heavy rampart you should remove the cheap cap and replace it with a low esr cap between 470uf to 1200uf whatever you have space for. It really doesn't need to be any larger than 470uf.
heavy rampart
<@332538477210238990> you should remove the cheap cap and replace it with a low ...
Yes, I'll have to do that. Tried the parallel solution, didn't work, the filtering hasn't changed, it just caused more sparks when plugging the quad. Thanks!