Х
Мы в ПЛК-шных блоках питания ставили.
Разницы было немного.
Но насколько я помню - ВЧ-помехи слегка придушивались.
Size: a a a
Х
A
Х
Х
A
A
2) C10: Y-capacitor added between primary and secondary sides
A capacitor called a Y-capacitor is added between ground on the primary side and secondary side. This is one typical method for reducing the common mode noise caused in the secondary side by primary side switching noise via the capacitance across the windings of an isolation transformer. The voltage rating of the Y-capacitor must be equal to the insulation voltage of the transformer. A capacitance of about 2200 pF is chosen.
A
Х
Х
A
Х
A
A
Х
A
Х
A
Х
Х
A