Text this: Four-quadrant operation qr-ZCS DC/DC LUO converters

  _____    _    _     ______     ___      _  _   
 /  ___|| | || | ||  /_____//   / _ \\   | \| || 
| // __   | || | ||  `____ `   | / \ ||  |  ' || 
| \\_\ || | \\_/ ||  /___//    | \_/ ||  | .  || 
 \____//   \____//   `__ `      \___//   |_|\_|| 
  `---`     `---`    /_//       `---`    `-` -`  
                     `-`