10000W SCR 110V/220V Voltage Regulator Motor Speed Controller Dimmer Thermostat

Purchased it to slow down the RPM of my Bosch GDC 120 marble cutter as a Circular saw for woodworking. The marble cutters have very high RPM (10k-11k), while safe woodworking needs RPM in the 3.5-5k range. Unfortunately decent quality woodworking circular saws cost twice that of marble cutters and I needed this for some small home, hobby DIY. Thus the SCR voltage regulator. Reading some comments I was unsure if this would serve the purpose or if I'd receive a good unit or a lemon. So I first tried to test the unit with a 100W incandescent bulb, which dimmed very nicely. Then I tried it with a cheap table-fan, which too could be slowed down pretty well. Finally, I tried it with the Bosch circular saw, and at about 40% mark, I could get enough RPM to easily saw through 19mm blockboard and 18mm ply. I then screwed on the unit on a piece of waste blockboard. I will probably make a ply partial enclosure for it. My only fear though, is what harm the SCR regulator does to the motor in the circular saw, and how long with this regular and the saw last. So far so good.

Used with a grinder with sanding disk. Honestly, without a voltage regulator like this one it's not possible, so, it does a job as supposed.Minus one star - 'cause no any description or manual how to connect. So it's taking some time for research, instead of just 'plug and play'

Working fine, esp.. for metal drilling, I was advised to drill it in a reduced speed (600 rpm - Youtube) . Now I am doing it without any problem. I have attached it with my extension board and use it only when I need . Thanks.

I use this SCR drive to drive a 180VDC PMDC motor! Add a diode full-bridge to the SCR output, add a capacitor and you have a DC drive... Go ahead and buy it.

Hello SAR I CAN USSED IT 950 WATTS, 220 V, 11000 RPM , ANGLE GRINDER FOR VARIABLE SPEED PURPOSE ?