Re: Re Light Dimmer to Adjust Spark Gap Fan?

> I used a dimmer on my vacuum cleaner motor (with brushes) because at full
> throttle, it draws over 10 Amps and is too loud (and provides way more
> airflow than I need).  But with any reasonable type of fan, is there a
> need to slow it down?
> Regards, Gary Lau
> Waltham, MA USA

Isn't it possible to overquench a gap?