Feb 7, 2015 · I found one that almost fits our application but our amperage is closer to the peak then the continuous. So is it possible that I could put two of the same speed controller in parallel to diffuse the current? Or would there too much back emf? Motor Specs: 115 V DC 20 A 3.5 HP Driver Specs: 40-175 V DC Input/Output 12.5 A continuous 25 A peak ~2 ...

Jul 11, 2006 · This is enough to get a phase shift difference to make the rotor turn. I'm not saying you can't vary the speed of a single phase motor at all, but I would only attempt to vary it by 10% or less. Also, most of the time when a motor with a speed controller is …

Jun 27, 2011 · I'm trying to control the speed of a DC motor by using a potentiometer, but am unsure what value resistance I should use. Having tried 500k, 10k and 500ohms, the motor stalled almost as soon as I turn the dial (a bit more leeway with the 500ohm but not much).

Jul 3, 2012 · Simplest way I know of to do what you want is to just get a 24vdc electric scooter controller that uses a 5k Pot for the throttle control. You will be able to set it to whatever speed you want. A 24v 350w or 500w watt controller would work and probably cost you about $40- $50. Put a 20/25 amp fuse in it and it should work fine.

Feb 17, 2014 · I'm aware of speed controllers and I know how to reverse a DC motor just with polarity, so I'm going to have a 3 position switch for that. However, I'm unaware of exactly how to add some speed variability without actually buying a speed controller, which is an issue because we're on a sort of tight budget. Torque isn't a big issue either.

Aug 22, 2024 · What kind of motor / controller is more suitable for such application? Available power is DC 24V, max 20A. The usage of worm gear is to prevent the wire from being unrolled when no power is applied, even under load. I'm hoping for a controller that automatically increases torque when higher load is detected, but does not go above the max power ...

Mar 29, 2015 · Yes. For a 'small' motor, using a variable series resistor can work quite well. Scalextric sets always used to do it that way, with a chunky-wound rheostat inside the handle of the controller. But, even relatively small motors can require quite a lot of heat dissipation if you use a purely resistive voltage adjuster / regulator.

Feb 14, 2015 · Most 1.5V motors are probably DC brushed permanent magnet motors. To control the speed you can either reduce the voltage (eg to 1V) or use Pulse Width Modulation (switch the 1.5V on and off rapidly so that the average voltage is less).

Jul 2, 2009 · The switch only reverses the motor, the rest of the circuit controls the motor speed by adjusting the amount of average power that is delivered by using a technique called pulse-width modulation. You can also accomplish this with less efficiency using a rheostat (a lamp dimmer is NOT a rheostat, despite the superficial resemblance).

May 15, 2020 · Is is a dc motor , it's run thro dc drive. There is a feed back signal taken from motor side to drive. Feedback taken from tacho generator. The motor is started slowly and it is running in 50% speed. But suddenly speed going up down . Then alarm came Tach_f. I have checked the tacho generator. But it is good only. Ohmic value is same.