Thank you again for your help. I searched in CPC.farnell.com for "two-winding common mode choke" and they presented a number of Common mode chokes at (http://bit.ly/2i8wo0O) . They vary in price according to rating in Amps and hertz eg [85UH, 12A] or [10MH, 2A] or [32UH, 8.5A]. Is that what...