{"id":289,"date":"2018-12-06T22:02:02","date_gmt":"2018-12-06T22:02:02","guid":{"rendered":"http:\/\/emagnetix.sdsu.edu\/?page_id=289"},"modified":"2018-12-06T23:04:14","modified_gmt":"2018-12-06T23:04:14","slug":"design-and-specifications","status":"publish","type":"page","link":"https:\/\/emagnetix.sdsu.edu\/?page_id=289","title":{"rendered":"Design and Specifications"},"content":{"rendered":"\t\t
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Design Goals:
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The Design goals were to have a compact overall structure and the \u201cbrains\u201d of the system would be the Nucleo Development board, STM32F746ZG. We also wanted the levitation to be held stable for at least 5 seconds and to  maintain the heat of the electronic components and the electromagnets at a minimum.<\/p>Specifications:<\/b>

  • 12 Volts to power the Motor Driver modules and Gate of all 4 N-MOSFETs of H-Bridge (current up to 4A) circuit. <\/li>
  • 3V to power the STM Nucleo board and each electromagnet (4) and Hall-effect sensors and Drain of N-MOSFETs <\/li>
  • H-bridge is used between power supply and EMs to alternate the polarity.<\/li>
  • The current range for each electromagnet is limited by the power supply to about 1A<\/li>
  • Each EM has a resistance of about 3.892 Ohms <\/li>
  • The Hall-Effect sensors have a linear voltage to Gauss transfer characteristic. <\/li>\n<\/ul>\n\n\n\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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