أرسل هذا في رسالة قصيرة: Input voltage/current distortion in switchmode power supplies, active and passive filtering, their costs and benefits

            _____    _    _    __   __    _____   
  ____     |  ___|| | |  | ||  \ \\/ //  /  ___|| 
 |    \\   | ||__   | |/\| ||   \ ` //  | // __   
 | [] ||   | ||__   |  /\  ||    | ||   | \\_\ || 
 |  __//   |_____|| |_// \_||    |_||    \____//  
 |_|`-`    `-----`  `-`   `-`    `-`'     `---`   
 `-`