Photo 229 229948-Gadget Freak Case 154 Table Saw Quick Clean Up
Latest Gadget Freak! Table Saw quick cleanup, simple Hall effect sensor project –

When John Dawson turns on his table saw he wants a Shop-Vac to automatically turn on, too. He might have controlled a duplex outlet from a wall switch, but where’s the fun in that? Instead, he uses a Hall-Effect sensor to detect current flow in the saw’s power cord and then turn on the vacuum cleaner via a relay. John’s design adapts well to other control situations, too. Don’t get sucked into a simple switch circuit.