Circuit Break - A MacroFab Podcast

MEP EP#239: Frictionless Spherical Cow Transformers

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MEP EP#239: Frictionless Spherical Cow Transformers

Parker

  • Garage Door opener hacking
    • Converting my normal style garage door opener to a “jackshaft” style opener
    • Reversing the direction of the A/C single phase motor?
      • Split phase motors
      • One phase is shifted with a large capacitor by ~90 degrees
      • In my application I just had to reverse the wires and the end stop wires
      • PyInstaller
        • Can take your python scripts and make it into a self contained application
        • Useful for non technical inclined people on your team
        • Cross Platform!
        • GUIs
          • Tkinter seems to work well in Win10 and Ubuntu 20 LTS

            • Stephen

            • High voltage low current measurement
              • Tony_W Recommended the ACS37002
                • Hall effect sensor that can be ground referenced in very high voltage applications
                • 0.85m ohm conductor resistance
                • 4.8kV RMS isolation voltage
                • VCC of up to 6.5V
                • -50 to 50A sensing range
                • Gain selection of 30mv/A to 60mV/A
                • In my situation I would want to monitor 0.1mA or 100uA. With a gain of 60mV/A that would be 60uV/mA so 0.1mA would be 6uV….. This may still not be the best solution because I would likely need a ton of gain and have to correct for any offsets.
                • Possibly to a tro prong approach - Measure voltage across known resistances in the circuit
                • Getting transformers manufactured for your product
                  • What do you need to know?
                  • How do you get started?
                  • What are the specifications
                    • Mains transformers
                    • SMPS and flyback style “yellow tape” Transformers.
                      • ...more
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                      Circuit Break - A MacroFab PodcastBy MacroFab, Inc.
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