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fecal_henge

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Here is a likely scenario for the baby food/ adult diapers combo: Someone who suffered so much damage during childbirth that they are still struggling with their bowels by the time their baby is on solids. Hilarious!

Edit: obligatory single down vote on author post to author content.

I would think so, or by taking cross sections. Its hard to believe they have some miraculous geometry that needs guarding anyway. Maybe they are trying to dissuade people who might try to 3d print an impeller.

3d models for industrial fan manufacturers (Sanyo,NMB) are widely available.

This is a very strange part, what with the upstream regulator circuit.

My guess is that their efficiency stats dont include losses in the upstream regulator.

100 usd per unit doesnt seem that excessive.

-48 to 48 claims something like 97% (load dependent of course). It also needs to arbitrate between two input supplies for glitchless redundancy, plus have PM bus and other spec mandated stuff. There is no technical reason why you cant go -48 -> 12 as you state with good efficiceny, but we cant get hold of a part that ticks all the boxes.

Horrific performance by my definition would be 48v to say 1v. We only realistically use buck topologies for POL supplies. Such a ratio is really bad for current transients, not to mention issues like minimum on times for the controller.

Is a 155 throws enough to evaluate bias? Seems more times than I'd like to roll some dice, but not enough to gain enough measurement confidence. By what criteria is the person assigning the traffic light ratings? What about face coplanarity? Get this enthusiast in a metrology lab.!

For a multiple IVF treatment case (a fancy hospital might have 40% cycle to birth rate remember) it would not be unusual to have ~100 actual injections.