grizedale
Advanced Member level 3
Hello,
In an offline SMPS, should the MOV be put just before the mains rectifier, of should it go just after the mains fuse?
..Basically, which side of the Mains EMI filter should the MOV be placed?
Ive heard some say that it should go on the line side of the EMI filter, so that it protects the X caps more.
....others say that the action of the MOV is improved if it comes "after" the EMI filter, because the filter slows the voltage rise across the MOV, giving the MOV more time to do its work properly.
In an offline SMPS, should the MOV be put just before the mains rectifier, of should it go just after the mains fuse?
..Basically, which side of the Mains EMI filter should the MOV be placed?
Ive heard some say that it should go on the line side of the EMI filter, so that it protects the X caps more.
....others say that the action of the MOV is improved if it comes "after" the EMI filter, because the filter slows the voltage rise across the MOV, giving the MOV more time to do its work properly.