In many ways, fuse ratings is an art form. Inrush current, load current, spikes, motors starting up, and numerous other factors come into play. You have to consider the steady state of the device, but what if all peripheral functions operate at the same time? So rating a fuse can be tricky. I assume the cooler design engineer was looking at the steady state current and not considering inrush from start-up. But then again, running a fuse so close to steady state was foolish, unless he was forced to use wiring or other devices that could not handle much more current. Then. that was just plain stupid, but cost effective. Fused flex on start-up or an increase in current, so they will wear out if they aren't designed properly. But, if there was no warranty, then who cares?
I wish I could find a Ferrari that someone threw away because of blown fuses. I am sure I could find the fix...
Nice catch--both for figuring out the fuse issue and for scoring a working wine fridge. Seems like a pretty basic case of specing the wrong part and overlooking fundamental design principles. You have to wonder if it's a case of oversight or a design choice caused by pressure to reduce costs. Either way, a pretty overavoidable design flaw.
Earlier this year paralyzed IndyCar drive Sam Schmidt did the seemingly impossible -- opening the qualifying rounds at Indy by driving a modified Corvette C7 Stingray around the Indianapolis Motor Speedway.
Wearables are changing the way we see ourselves. With onboard sensors that have access to our bodies, we are starting to know our physical selves like never before, quantifying our activity, our heart rate, breathing, and even our muscle effort.
Last week, the bill for reforming chemical regulation, the TSCA Modernization Act of 2015, passed the House. If it or a similar bill becomes law, the effects on cost and availability of adhesives and plastics incorporating these substances are not yet clear.
This year, Design News is getting a head start on the Fourth of July celebration. In honor of our country and its legacy of engineering innovation -- in all of its forms -- we are taking you on an alphabetical tour through all 50 states to showcase interesting engineering breakthroughs and historically significant events.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.