View Single Post
Old 10-09-2021, 01:55 AM   #20
Per Hansson
Super Moderator
Per Hansson's Avatar
Join Date: Jul 2005
City & State: ----
My Country: Sweden
Line Voltage: 230v 50Hz
I'm a: Knowledge Seeker
Posts: 5,214
Default Re: Dell 2209wa - momentarily blinks every two seconds [ Video + Audio + Service Manu

Good work on getting it fixed!
Originally Posted by ohren View Post
Thank you for the guidance. Getting an understanding of why the cap would be at those two levels with/without PFC sounds worthwhile.
I'm not sure if I misunderstood if this was a question but here you go:
With 230VAC RMS line voltage the rectified DC voltage will be: √2 x 230VAC = 325VDC
The boosted (PFC) voltage depends entirely on how the PFC controller works so that can't be calculated without tracing the whole circuit out and reading datasheets.
P.S: The PFC circuit is normally off when the unit is in standby mode.
"The one who says it cannot be done should never interrupt the one who is doing it."
Per Hansson is offline   Reply With Quote