The low-voltage variable speed drive (VSD) allows variable control instead of fixed-speed operation. These days, VSDs can ...

This short video from [ProShorts 101] shows us how to build a variable speed disc sander from not much more than an old hard drive. We feel that as far as hacks go this one ticks all the boxes. It is ...

THE USE OF INVERTER-BASED variable speed drives (VSDs) in home appliances is forecast to double over the next five years, according to the latest detailed assessment of the market from IMS Research.