is the below a bad thing to do?
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Re: is this a bad idea for a capacitor?
Probably because if it needs to Vent it cant meaning it will likely explode or push the bung out.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
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Re: is this a bad idea for a capacitor?
vent? heat or something elseComment
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Re: is this a bad idea for a capacitor?
Is that card board sleeve holding down the cap?
Not mechanical secured mounting.Never stop learning
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Re: is this a bad idea for a capacitor?
no its a bit of double sided sticky foam, I think I'll find another way to mount it.Comment
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Re: is this a bad idea for a capacitor?
using a 16v cap in a car? that wont last long!Comment
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Re: is this a bad idea for a capacitor?
why's a 16v a bad idea?Attached FilesLast edited by cam4441; 04-20-2016, 02:24 PM.Comment
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Re: is this a bad idea for a capacitor?
What device is that in?Don't buy those $10 PSU "specials". They fail, and they have taken whole computers with them.
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Re: is this a bad idea for a capacitor?
because when a car is running, the voltage is generally about 14.5v and sometimes a bit higher - you have no headway to deal with spikes without exceeding the cap's limit.
it should be [continuous voltage] x1.5.
so atleast 22v - use a 25v capComment
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Re: is this a bad idea for a capacitor?
The voltage that runs through the cap is 7v its only for the receiver
Its an RC car TechGeekComment
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Re: is this a bad idea for a capacitor?
then my mistake.
why do you need it though?Last edited by stj; 04-26-2016, 01:37 PM.Comment
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Re: is this a bad idea for a capacitor?
it keeps the voltage stable servos glitch and shake without themComment
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Re: is this a bad idea for a capacitor?
If it's double-sided sticky foam, then it's fine to leave the cap like that. Should the cap go bad, the vent will push out and open without problems.
What you don't want to do with caps is seal their top with epoxy or have the whole cap tight against something... which you don't have, so it is okay.
I'm guessing that connects to the receiver battery terminal, correct?
Makes me curious what brand that capacitor is. I've seen some sellers on eBay offering cheap low-quality caps for these. But I guess it doesn't really matter that much anyways, since the caps are hardly stressed at all filtering power to the receiver. Even a low-quality brand should last a while in that spot.
Just FYI, though, there is nothing special about those caps. You can easily make your own for a fraction of the price, especially if you have some access to junk electronics like TV boards and such.Last edited by momaka; 04-28-2016, 11:17 PM.Comment
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Re: is this a bad idea for a capacitor?
When you said tight against something you mean the top of it and venting is that it would push the bung out instead of venting. If it was to firmly fastened at the top.
the next picture down with the zip tie should be ok?
I'm not sure of the brand but it probably is a crappy oneLast edited by cam4441; 05-03-2016, 03:04 AM.Comment
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Re: is this a bad idea for a capacitor?
Correct.
The "X" you see on top of the cap is a pressure safety vent. When too much pressure builds inside the capacitor, it will bulge and eventually the vent will slowly release the pressure.
However, if the cap is glued down and the vent is blocked, then the cap will try to push out of the rubber bung on the bottom when pressure builds up (that is, if the cap fails, of course). The difference is that the bung may not always release the pressure in a safe way. So that's why it is important that the cap vent is not blocked.
Yes, that is fine.
The only note I have about that is to be careful when tightening the zip tie so as not to crush, dent, or deform the cap body. Usually, a cap will still work even if you do. But it could also short out or build up pressure inside.
Well, the good news is that the power that is fed to the receiver from the ESC is typically linearly regulated inside the ESC. So that capacitor isn't really getting stressed at all. Thus, even a crappy brand will likely last a long time. I was just curious for the brand, since this is badcaps.net, after all.
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Hi people, I hope this is the correct spot to post this, I'm new to the forum.
I have an RTX 3080 Founders Edition which has a burnt up capacitor (it was in parallel with another capacitor which appears damaged too), so I am hoping to be able to identify the capacitor values and order replacements.
I hope these photos make it clear which component I am referring to:
(yes, the soldering is a bit botched from removing the blown one, I know)
I have found the board schematic (attached), but there does not seem to be a boardview available. I have never... -
I replaced some capacitor which is located on optical pickup pcb which is shown in the table below(PCB #2).Because it have been out of order.
Now,It works very well,But I just have found that all caps (6svpc100my and other part number as well) ,which is shown in the table below, has ultra-high ripple current spec.
It is not able to obtain any capacitor which can be a substitute for this ultra-high ripple current nichicon capacitor.
So I replaced it with samxon and rubycon's general capacitor(GP,YXA series).
I know that these capacitor will not last as long as nichicon capacitor... -
I desoldered samwha NF capacitor(50v 5.6uf) from PCB circuit of 29inch CRT TV which have symptoms of no display after I heard sound of inrush of current to TV whenever I switch on this television.
I measured ESR value of this non-polarized capacitor(samwha NF capacitor 50v 5.6uf) by means of MESR-100 ESR meter and It displayed 0.3 ohm
And When I measured its capacitance with digital multimeter and LCR-T4 Mega328 meter, It displayed 10uf from DMM and 8uf from LCR-T4 meter.
I found catalogue of samwha capacitor(samwha-catalogue_3.pdf file), which is attached to this thread,... -
When I tried to repair LG 29 inch CRT TV, I found that the ESR value of samyoung SMS capacitor(160v 2.2uf), which is very close to D1879 transistor, is 6 ohm.
Judging from above ESR Meter Table,I think It is necessary to replace this sms capacitor.So I visited local electronics shop,and I purchased 160v 2.2uf rubycon YK capacitor.
But when I browse through rubycon YK datasheet,I found that there is no ripple current rating for 160v 2.2uf specification. But On the contrary, I found 39 mA ripple current rating for 160v 2.2uf SMS capacitor.
Rubycon YK DataSheet (b... -
a few days ago I finally purchased mser-100 v2 and I tested its abillity of measuring ESR value.
I found that It shows pretty accurate ESR value for electrolytic capacitor,But When I measure polymer capacitor of dreamcast game console,I found that one third of polymer capacitor's ESR value is more than twice the value of ESR meter table.(for example, I measured one polymer capacitor of 6.3v 100uf, It showed ESR value of 7.68)
Although my dreamcast now turns 20 years old but it still works. I occasionally have played game with it.
Is this ESR value of polymer capacitor correct?...
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