Circuit Break - A MacroFab Podcast

MEP EP#196: Foamy Power Factors - Electrolytic Capacitors with KEMET

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MEP EP#196: Foamy Power Factors - Electrolytic Capacitors with KEMET

Episode 200 is Coming Up!

  • Question / Answer setup like Episode 100
  • Send them via Audio Format to [email protected]

    • Ivan Quiroz

    • Over 19 years of electronic design and development experience in different industries ranging from aviation to industrial automation
    • His technical expertise surrounds the intrinsic requirements and detailed development of circuits
    • In his down time, he likes to develop escape room puzzles, sensors, and anything he can 3D print

      • Suzana Jankuloska

      • Is an electrical engineer from Macedonia
      • Has been with KEMET for 7 years and as a Product Manager of Electrolytic Capacitors for 3 years
      • Loves solving problems and sudoku and is a fan of martial arts and the movie Ip Man

        • Electrolytic Capacitors

        • Discuss ESR, ESL, Dissipation factor, Tan Delta, Ripple current, and life span
        • How to read the datasheet for an electrolytic capacitor beyond the value/voltage/dimensions
          • impedance at a known switching frequency
          • Brief introduction to a new type of electrolytic capacitor (polymer)
          • Link the electrolytic capacitor to the need for a bank capacitors
          • Signals through electrolytics
          • Leave on forever vs. multiple inrush cycles preferred for lifetime?
          • What drifts out of spec first?
          • The wear-out failure mode is loss of electrolyte
            • It is possible to measure this by weighing the capacitor before and after operating it at elevated temperature
            • When the capacitor loses a certain amount of weight, it is likely to fail
            • In the old days, the rule of thumb was to predict failure at 50% of the initial weight
            • What's the point of those orange SMD tantalum capacitors?
            • On large screw terminal caps, are the screws themselves typically intended to carry current, or just to mechanically tie the cap to the mounting surface (bus bar, PCB, etc.)?
              • Is it important to use aluminum screws to match materials to avoid corrosion from dissimilar metals in high current applications?
                • ...more
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