Oliver Sedlacek

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Oliver Sedlacek

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  • 03.10.2017
  • DC Transformer? Forward converter? Isolation amp? You decide!
  • Very thought provoking! My first thought was that in practice the fact that link between the ports breaks down during the switching period, and it is inevitable that at some point a load transient would coincide with a switching event. This could however be easily mitigated in a polyphase implementation. I would be really interested to see that actually tested for transient response!
  • 01.28.2017
  • A slick upgrade to industry-standard RAID
  • It's good to hear stories when technology "Does what it says on the tin". I was put off RAID when an array went down and I lost everything. I learned from that experience that RAID is not immune to common point failures (eg PSU spike taking multiple drives out simultaneously) and the need for a big flashing light to tell you when one drive is down and you need to replace it RIGHT NOW.
  • 10.15.2016
  • A sensible 30A energy meter
  • Another cracking chip from LT. Mind you, it probably makes my recent work on power monitoring completely obsolete.
  • 09.12.2016
  • The gap between renewable energy promises and reality
  • The solar panels on my roof manage about 20% efficiency through to the grid, so I would say 70W/m2 is practical. With the total area of the earth being around 0.13 Pm2, we are looking at 9PW of available solar power. The IEA estimates global demand at 13TW, so a rough estimate comes in at needing to cover only 0.15% of the planet in solar panels. You could hide that much in the Sahara desert without anyone noticing.
  • 02.24.2016
  • Is rigorous engineering support dead?
  • Sadly I completely sympathise with your experiences. Engineering time is expensive, and companies seem to think it can't be squandered on interactions with customers.
  • 02.10.2016
  • Do grandmas make the best engineers?
  • Maybe we need to start a 'Hall of shame' for all products that really, really shouldn't be flawed in this day and age. Today's nomination is a toothpaste tube. Yes, really, you can mess up a toothpaste tube. The one I have in mind is too torsionally flexible, so when you try and open it the tube twists instead of the cap unscrewing. The only solution is to squeeze the tube quite tightly so that the pressure of the contents stiffens the tube, but guess what happens when the cap clicks open?