Circuit Break - A MacroFab Podcast

MEP EP#258: Chainsaws, Wasps, Doom, and Gloom

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MEP EP#258: Chainsaws, Wasps, Doom, and Gloom

Parker

  • PCBA Lead Times in Q1 2021
    • Supply chain disruption in 2020 started with the Lunar New Year and quickly extended into the COVID-19
    • 2021 LNY falls between February 9 to February 16
    • COVID-19 Vaccines
      • Logistic capacity being reserved for the vaccine distribution
      • 10 Day service at MF will be the biggest hit. Guaranteed 10 day service will be disabled on January 13th and will resume on February 16th.
      • On Dec. 31, 2020, the United States Trade Representative (USTR) allowed the exclusion for 2-layer and 4-layer printed circuit boards HS code to expire.
        • Any orders for 2- and 4-layer products going forward or that have not yet been received into the U.S. will have a tariff surcharge if built in Mainland China.
        • Other interesting PCB related things
          • Copper – the price of copper has increased 68% YOY
          • Gold – the price of gold has increased 22% YOY
          • Resin – cost of epoxy resin has risen 40% since the recent fires at Epoxy Resins factories in China and Korea
          • UL aims to put a security rating on every connected device
            • Categorizes products according to an ascending five-level scale: Bronze, Silver, Gold, Platinum and Diamond.
            • For consumer level devices this could take hold if customers pay attention to markings.
            • Do customers look for UL markings? If not who does? The seller/store?

              • Stephen

              • Covid-19 5G Chip Diagram NOW THIS IS NEWS!
                • Is everyone getting more metal?
                • Conspiracy theorists in Italy are warning the public about a ‘5G Chip’ they claim has been planted in COVID-19 vaccines
                  • However, the widely circulated image of the chip in question has been outed as a reworked schematic for the Boss Metal Zone pedal
                  • Best response to this : “Excellent. Reassured to know that 5G relies on op-amps and some 1n4148 diodes. Proper old school. None of that digital and microprocessor nonsense. I’ll take one in each arm.”
                  • Boss metal zone uses a very interesting gyrator circuit within a non inverting opamp configuration
                  • Dual gyrator to simulate two inductors to ground. Must be for filtering to get “the right shitty sound”
                  • A very interesting frequency response with multiple peaks
                  • One before clipping and two after - Interesting choice
                    • ...more
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