Circuit Break - A MacroFab Podcast

Dive into the electrifying world of electrical engineering with Circuit Break, a MacroFab podcast hosted by Parker Dillmann and Stephen Kraig. This dynamic duo, armed with practical experience and a palpable passion for tech, explores the latest innovations, industry news, and practical challenges in the field. From DIY project hurdles to deep dives with industry experts, Parker and Stephen's real-world insights provide an engaging learning experience that bridges theory and practice for engineers at any stage of their career. Whether you're a student eager to grasp what the job market seeks, or an engineer keen to stay ahead in the fast-paced tech world, Circuit Break is your go-to. The hosts, alongside a vibrant community of engineers, makers, and leaders, dissect product evolutions, demystify the journey of tech from lab to market, and reverse engineer the processes behind groundbreaking advancements. Their candid discussions not only enlighten but also inspire listeners to explore the limitless possibilities within electrical engineering...

https://www.macrofab.com/podcasts/

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episode 225: MEP EP#225: Clipping and Clamping OpAmps


MEP EP#225: Clipping and Clamping OpAmps

Stephen

  • DC heaters continued
    • Tested the new values
    • Last episode was shooting for ~250mW of dissipation in the regulator and transistor
    • Measuring closer to 350mW
      • Quiescent current and some balancing and tolerance
  • Opamp clamping circuit
    • A useful voltage clamping circuit with independent upper and lower thresholds
    • Pros
      • Much more accurate than the simple clipping circuits
      • Hard turn on characteristics
      • Can be overdriven without much issues
      • Not terribly expensive
    • Downsides
      • 3 or 4 opamps needed
      • Not particularly fast - starts to show issues past 20k and is pretty bad at 30k
      • Small overshoot that is frequency dependent
      • Does not work with opamps that have input protection diodes

Parker

  • Brewery Updates!
    • Installed
      • Tubing
      • Pumps
      • Pots
    • Waiting on
      • Stainless mesh basket
    • What is left
      • Design and build the grain crane
      • Mount electrical box
      • Finish wiring
      • Paint and sealant
    • Electrical Box
      • Might have put the power input in the wrong spot!
      • Need to finish the wiring.. Need to order more wire I think...

R.F.O.

  • Rules of thumb - Are they obsolete?
  • Next week we have Al Williams on from Hack a Day
    • If anyone has any questions for him let us know in slack!


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 May 20, 2020  55m