EP#394: GPUs D.O.A, Reverse Polarity Problems, 3D Printer Pickles

EP#394: GPUs D.O.A, Reverse Polarity Problems, 3D Printer Pickles

Parker and Stephen discuss some MacroFab updates including news about their pod community and Slack, what’s wrong and right about high-end GPUs and the marvels of KrisFix and his YouTube repair channel, what’s up with consumer electronics and their lack of reverse polarity protection, and Parker muses about when it’s time to call it day for a 3D Printer.


More on these topics:


Community:

  • New community hub! Shifting away from the Slack channel?
  • Are you in or near Houston, Texas any time soon? Please come out to Beers for Engineers! More info below!

Dead on Arrival for high end GPUs - Nvidia

  • RTX 4090 - The biggest problem with modern cards that the manufacturer refuses to repair
  • KrisFix’s repair skills
  • Popping the pad
  • Too much Board Flex
  • “RTX Technology Package” (air quotes)
  • Decoding NVIDIA
  • 5000 Series Rumours?

Why do so many consumer electronics not have reverse polarity protection?

  • Looking through Windows
  • Can’t turn it up to 11
  • Motherboards of Invention
  • Guitar Pedal Problems
  • The hot leg
  • The P Channel Set-up
  • “Slap a diode on it”
  • Italian Decisions
  • Why Raspberry Pie “Won”

Personal Project Updates:

  • Should Parker replace his 3D printer?
  • When to pull the plug on such a hard-working machine

Good links:

Thank you for listening to the MacroFab Engineering Podcast! We’d love to hear what you think of the show so please tweet at us @MacroFab and join our slack channel at Macrofab.com/slack or email us at podcast@macrofab.com.

Episoder(448)

EP#8: Bits That Don’t Quit

EP#8: Bits That Don’t Quit

Podcast NotesStephen and Parker do a live discussion on how the digital and analog side of the Super Simple Power Supply will interface with each other. MultiSim has been a huge part in simulating the...

25 Mar 201639min

EP#7: The Art of Retention Force

EP#7: The Art of Retention Force

Parker has almost finalized the front panel design for the Super Simple Power Supply. Going to have a "VU" meter for how much power it is pulling.Parker is also still looking for a proper encoder that...

18 Mar 201624min

EP#6: Mythical Transistors

EP#6: Mythical Transistors

Podcast NotesParker is still working on the Super Simple Power Supply. He is designing the front panel. He is considering using some WP1043 Kingbright LEDs.Super Simple Power Supply will have two deci...

11 Mar 201625min

EP#5: Tilting Tubes

EP#5: Tilting Tubes

Parker ordered all the parts for the SAIM this week. The v-slot rails and brackets from OpenBuild, iES-1706 servos from Leadshine, and 3D printed parts from Shapeways.MacroFab uses 3D printed parts to...

4 Mar 201647min

EP#4: Linear Effects of Licensing

EP#4: Linear Effects of Licensing

Audio quality of the podcast leveled up! Stephen and Parker went over to The Pharmacy Recording Studio which is run by Josh Moore. He hooked them up with 2 (!) microphones and a nice an acoustically p...

26 Feb 201617min

EP#3: Liquid Toroidal Electrons

EP#3: Liquid Toroidal Electrons

Stephen and Parker have been testing the main opamp for the OPA541. Stephen wrote a blog post detailing the opamp tests with simulation and real world testing.GitHub link to the repository for the SSP...

19 Feb 201622min

EP#2: Mechanical MultiSIM Monsters

EP#2: Mechanical MultiSIM Monsters

Stephen continues his work on the Stupid Simple Power Supply (SSPS). He decided to go digital voltage control over analog. Also he has been trying out MultiSIM BLUE by Mouser for circuit simulation. S...

10 Feb 201620min

EP#1: Opamp-timal Power Supply

EP#1: Opamp-timal Power Supply

Stephen talks about the Stupid Simple Power Supply (SSPS). He designed a OPA541 breakout board for testing. See figure 1.OPA541 Datasheet : Street price of $21.88.Parker brings up that blinky LEDs are...

9 Feb 201623min

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