What has big teeth, kicks like a mule, spins at 5000 rpm and is hand held?
You can get DIY circular saws with built in soft start [1] but not stand alone starters for older tools. After lining up the saw guide on the workpiece I want to slot the saw into the guide, then switch on without it jolting out of alignment. It might be time to break out the soldering iron... So I'm wondering: could a simple triac controller like [2] be adapted to run in DC mode as in [3] circuit 1c, and fitted with an RC on the gate so as to ramp up over 2 seconds when power is applied? Has anyone here come across a circuit that does something like that? Apologies for list abuse but I've Googled MAO without success. All suggestions gratefully received (except "Buy a new saw", obviously). Antony [1] eBay.co.uk item 400054540068 [2] http://www.quasarelectronics.com/kit-files/electronic-kit/3019.pdf [3] http://www.st.com/stonline/products/literature/an/2477.htm -- Please post to: Hampshire@mailman.lug.org.uk Web Interface: https://mailman.lug.org.uk/mailman/listinfo/hampshire LUG URL: http://www.hantslug.org.uk --------------------------------------------------------------
