On some chokes I don't see any reference to a max VDC rating but there are listings for VDC on hammond. For example, for this series of EPCOS inductors:
http://www.epcos.com/inf/30/db/ind_2008/b82731t.pdf
There is a 250VAC rating but no DC rating. I'm curious if it could be used after the rectifier.
Chokes - VAC rating vs VDC rating
Moderators: pompeiisneaks, Colossal
Re: Chokes - VAC rating vs VDC rating
Probably because most power supplies have the choke early on in the string with a lot of ripple.
Just a guess.
The rating is due to the wire size and current handling.
BTW, that spec sheet is for double chokes.
Just a guess.
The rating is due to the wire size and current handling.
BTW, that spec sheet is for double chokes.
Tom
Don't let that smoke out!
Don't let that smoke out!
Re: Chokes - VAC rating vs VDC rating
BTW, that spec sheet is for double chokes.
Sorry, I was just copy pasting an example of a choke with no DC voltage rating and didn't notice.
Without knowing the wire dia, looking at current of 2A or higher capabibility with a breakdown voltage of 1400VAC how do we determine if it is safe at 500VDC rectified, for example?
Sorry, I was just copy pasting an example of a choke with no DC voltage rating and didn't notice.
Without knowing the wire dia, looking at current of 2A or higher capabibility with a breakdown voltage of 1400VAC how do we determine if it is safe at 500VDC rectified, for example?