Low cost torque amplifier

on 2003-03-25 14:22:57 UTC

I'm looking for a low cost brush type PWM torque amplifier for my EMC
project lathe. The amp needs to run 8A continuous with ~16A peak. The catch
is I have to run a 170 volt DC bus for this particular motor. Amp can be
torque(current)mode only. I don't need a velocity integrator as I don't
plan on running a tach. Best price I've found so far is about 300 clams.
Have any of you seen anything cheaper?

-Bob

Discussion Thread

J. Malte Stoeckhert 2003-03-25 14:02:35 UTC CNC: Spindle speed control Bob Simon 2003-03-25 14:22:57 UTC Low cost torque amplifier caudlet 2003-03-25 14:37:18 UTC Re: CNC: Spindle speed control Andrew Mawson 2003-03-25 14:44:12 UTC Re: CNC: Spindle speed control James Cullins 2003-03-25 16:06:58 UTC Re: [CAD_CAM_EDM_DRO] CNC: Spindle speed control Matt Shaver 2003-03-25 17:04:45 UTC Re: [CAD_CAM_EDM_DRO] Low cost torque amplifier Jon Elson 2003-03-25 22:04:50 UTC Re: [CAD_CAM_EDM_DRO] Low cost torque amplifier Peter Cruickshank 2003-03-26 02:37:46 UTC Re: CNC: Spindle speed control Peter Cruickshank 2003-03-26 03:00:40 UTC CNC: Spindle speed control - F to V Bob Simon 2003-03-26 06:41:33 UTC Re: [CAD_CAM_EDM_DRO] Low cost torque amplifier Erie Patsellis 2003-03-26 07:19:14 UTC RE: [CAD_CAM_EDM_DRO] Re: CNC: Spindle speed control J. Malte Stoeckhert 2003-03-26 08:34:11 UTC Re: CNC: Spindle speed control ccq@x... 2003-03-26 12:29:03 UTC Re: [CAD_CAM_EDM_DRO] Re: CNC: Spindle speed control Peter Cruickshank 2003-03-27 04:27:44 UTC Re: CNC: Spindle speed control