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   _____   _    _     ______     ___      ______  
  / ___// | || | ||  /_____//   / _ \\   /_   _// 
  \___ \\ | || | ||  `____ `   | / \ ||  `-| |,-  
  /    // | \\_/ ||  /___//    | \_/ ||    | ||   
 /____//   \____//   `__ `      \___//     |_||   
`-----`     `---`    /_//       `---`      `-`'   
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發送短信 : Power-stage design for switched- mode DC-DC converter