Delete comment from: Ken Shirriff's blog
Ken: thanks for your reply. I'm still a bit confused about the voltage level across Y1, as you said in the primary stage the DC level is up to 340V after filtered by electrolyte cap, so I assumed Y1 will see up to 340V if the main is 220Vac. Please correct me if I'm wrong.
I also found the following document about Y capacitor comparison, it says that for ceramic Y caps failure mode tends toward short circuit; while metalized film caps have "self-healing" feature and failure mode is open circuit (page 19)
http://www.kemet.com/kemet/web/homepage/kechome.nsf/file/KEMET%20Kollege%20Presentations/$file/EvoxRifaRFIandSMD.pdf
Jul 29, 2013, 2:35:36 AM
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