Basic (I think) cap questions...

[c.teaman]

I'm completely new to this, and have what i think are two basic questions...

First Question: When replacing a cap with an imperfect match, which is more important? Farads or volts? I have been assuming farads, but wanted to make sure I wasn't jumping to conclusions.

For example, if I am pulling a 2200uF/25v cap, would I be ok replacing it with a 2200uF/35v cap? or a 10v cap?

Second Question: How do you determine which caps are the startup caps?

I apologize if these are already answered somewhere else, I browsed for a bit and didn't see any obvious threads

[c.teaman]

Re: Basic (I think) cap questions...

My apologies, I just realized that I started this thread under the FAQs section. I don't see an option to delete my own thread, so I guess I'll just leave it here for a mod to delete or move.

[selldoor]

Re: Basic (I think) cap questions...

First Question: When replacing a cap with an imperfect match, which is more important? Farads or volts? I have been assuming farads, but wanted to make sure I wasn't jumping to conclusions.

For example, if I am pulling a 2200uF/25v cap, would I be ok replacing it with a 2200uF/35v cap? or a 10v cap?

You should normally replace like with like unless you can find a reliable source that says otherwise.

You can safely go a voltage step higher but for most purposes (as a beginner) not lower. You would of course have to make sure a larger value cap will physically fit

Second Question: How do you determine which caps are the startup caps?
=

On the Power supply for Tvs and Monitors there are some small caps
on the primary side of 25v or 50v and anywhere between 10 and 220
uf, 68uf is common

[ratdude747]

Re: Basic (I think) cap questions...

Moved from FAQ.

Only mods and admins (topcat) can delete/move threads.