Everyone,
I got ESR 1.1 Ohm for 22uF /400V electrolytic capacitor,
Is it bad ?
Cheers
I got ESR 1.1 Ohm for 22uF /400V electrolytic capacitor,
Is it bad ?
Cheers
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Re: 22uF / 400V ESR value ?
make & series would help. -
Re: 22uF / 400V ESR value ?
Have you searched for any of the data sheets for any of the Ltec caps ?
The first three results are all Ltec data sheets.Comment
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Re: 22uF / 400V ESR value ?
It's TY....from datasheet...I can not see ESR value ?Last edited by bianchi77; 10-25-2016, 04:33 AM.Comment
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Re: 22uF / 400V ESR value ?
they arent listed as low impedance, so it's common that the value is not given.
how is the capacitance?Comment
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Re: 22uF / 400V ESR value ?
it was 26 uF and when I measure with analog metre....it stopped on 10K on 10K scale...can not be completely discharge...Comment
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Re: 22uF / 400V ESR value ?
it may be o.k.
but if it's over the rated level it would be good to see the leakage level because sometimes a cap goes leaky and the uF rises at the same time.Comment
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Re: 22uF / 400V ESR value ?
you cant, only some digital component testers give you that data.Comment
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Re: 22uF / 400V ESR value ?
I'd better replace it then...Comment
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Re: 22uF / 400V ESR value ?
that is simplest.Comment
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"If I wanted to replace an old 15uF/400V capacitor with a new one,
I have a new 15uF/400V and a new 22uF/400V capacitor. When measured, the new 15uF reads only 13uF, and the 22uF reads only 20uF. Can I use the 22uF capacitor?" -
Hello,
can I use this cap:
https://www.tme.eu/en/details/ues1h4...tors/nichicon/
Capacitor: electrolytic; bipolar; THT; 47uF; 50V
to replace this capacitor: Electrolytic Radial E 47uF/50V 6.3x11 RM2.5 105°C Jamicon
What exactly I can expect to install bipolar electrolytic cap instead a regular one?
Thanks. -
I do have several old pc motherboards which i recapped 10 year ago and some of those caps are bulged now.
I would like to upgrade them using solid capacitors. I do use them for testing and helping some alternative operating systems.
I would like to ask if such an upgrade can be done, what should i have in mind when replacing electrolytic by solid caps and if such thing exist, if there are caps list for old motherboards. I would have to figure out what caps needs each motherboard and then prepare a list to try to ask for them on some electronics stores. -
From what I've found, the endurance of a liquid electrolytic cap is determined by the loss of electrolyte. If a cap is rated for 1000 hours. That's typically for a straight run test. How would the life vary if the cap is intermittently heated to its rated temperature (105C). Maybe for an hour at a time then cooled back to 30-40C (just a random number). Would the life still be 1000 hours?
Does it make a difference in the life expectancy if the cap is heating from ripple current (internal heating) instead of from the external ambient temperature?
Why do polymer capacitors... -
I have a situation where a power supply is commonly abused and the 12v supply caps take a beating. They don't commonly fail but they run hot. I was thinking about going from a liquid electrolytic (Panasonic FC and Nichicon HE) to an organic polymer. The values have been 330uF. I typically use a higher-than-needed voltage to get a lower ESR. The supply is operated from 12v.
If not organic polymer, what would be the caps that could take the most abuse?
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