InfraWave Forum

It is tempting to use a traditional electric motor such as a BLDC connected to a cam in order to produce the required sinusoidal motion of the fan blade. The advantage of this is that one does not need to design a custom linear motor. A disadvantage of this approach is the higher than 20Hz noise ...

I am willing to donate one of my two test rigs to a research organization that is willing to commit time to develop the technology further. Either contact through this BB or the email in the research paper https://www.sciencedirect.com/science/a ... 3023007296


Peter.

Throughout my research, I was working under the false assumption that 20 Hz sound waves are not perceptible to humans. This is why I targeted fans which operate at 20 Hz. It is so often repeated, that I did not look at the literature. I have since learned that sound can be perceived down as low as 4 ...