MEP EP#107: Orthogonal for Mutual Conductance

Podcast Notes

• Stephen
  • Melted Solid State Relay in electric brewery setup
    • “Finally gave up the smoke”
    • New SSR is rated for 40A
    • Installed a blower fan on the heatsink for extra protection
  • GFCI Breakers
    • Monitors current on both legs of the circuit and makes sure they are within 5mA of each other
    • Parker is going to use a SPA 240V 50A GFCI setup for his brewery setup
• Parker
  • DAC board update
    • PCM5122 based DAC design
    • Same chip as what is on the HiFiberry DAC+
    • Had to change out the in series resistors from 1K Ohm to 27 Ohm resistors to get the communication to work
    • Digital Logic Analyzer Verse Oscilloscope
  • Soldering Iron ownership history
• Rapid Fire Opinion R.F.O.
  • PCM2912A USB microphone chip
    • USB Interface, Mono Microphone Input, and Stereo Headphone Output
  • Found in a Datasheet for LAN9514 pg 15
    • When disabling port power, the driver will actively drive a ‘0’
  • The BenHeck show is losing its host
  • Adventures in Autorouting
    • /r/electronics thread
    • It is definitely written by a software person
    • They do not take in account RF noise, stability, power return and ground loops
    • “Imagine today’s standard 4 layer boards routinely being fit into 2 layers without any human effort.”

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