take this circuit for example: (the second picture)
http://www2.electronicproducts.com/...to_HVAC-article-FAJH_Energy-Feb2008-html.aspx
why there is a cap and a transformer like inductor at the main input? what are they for?
http://www2.electronicproducts.com/...to_HVAC-article-FAJH_Energy-Feb2008-html.aspx
why there is a cap and a transformer like inductor at the main input? what are they for?