I know how to measure a fan curve over a finite pressure range. I also, know how to measure the system response of the package that the fan will go in. As we all know, the theoretical operating point of the system would be intersection of the fan curve and the system curve. However...
I am trying to put a square box around a dimension on my solidworks drawing to represent a theoretically exact dimension for geometric tolerancing purposes. Thus far, all I've been able to do is get a round bubble around the dimension, representing an inpection dimension. If there any way to...
Theoretically speaking a DC fan should be operating at some point on its predetermined fan curve. I was always told that a rule of thumb is to not obstruct the fan's flow half the distance of the fan's diameter. This way, the measured fan curve may still be observed in an enclosure. However...
Is there anyone here that knows what kind of tolerances can be held on a PCB in production from the edge to the center of a hole on and from edge to edge of a board as well. I'm looking for the best case tolerance without adding significant cost.
Can anyone here provide a link detailing the proper test method of determining a fan performance curve on a flow bench device? I know it can be done, however I'm not sure at to the procedure and any other standards that are relative to the test.
Can anyone point me in the right direction of some good online references for fatigue prediction of electronic components under random vibrational loads? I know where to look if I am to shell out a little bit of money. However, I was looking to see if I can get away without doing so.
While observing L10 life expectancy fan test data, I notice that there is approximately a 5% increase in the rotational speed of the unit from the time the test start and ends. This is for a ball bearing unit with a max flowrate of 23 CFM and runs at about 13,000 rpm @12v. It would seem to me...
