Duo-phase 220uF cap voltage rating

[giovanni]

I see that the 220uF caps are used as part of the charge pump circuit so I assume they need to be 35V or even 50V? Can’t use those 10V I have lying around I assume…

 

[Betty Wont]

The c20 caps only see 9v. They are power filtering before the charge pump. You should be fine.

 

[DGWVI]

It's only seeing 9v, but best to go at least 25v rating. Also, it doesn't need to be 220u. I use 100u in that spot because I have a billion of em

 

[giovanni]

Ah good call, I’m gonna use what I have handy then. Can I go up, like 330uF?

 

[giovanni]

A silly question in hindsight, I could’ve figured this out myself!

 

[DGWVI]

Ah good call, I’m gonna use what I have handy then. Can I go up, like 330uF?

That will make your supply line sound like it has a wet blanket over it



But, yep 330 will work as well

 

[giovanni]

I ended up using some 50V 220uF caps I had that are large, but fit just right.