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).

Mar 29, 2015 · In summary, the conversation discusses different methods for controlling the speed of a motor, specifically through the use of a variable series resistor or an SCR. The use of an SCR is limited to AC motors and there are other devices, such as IGBTs and power mosfets, that can achieve pulse width modulated power to control DC motors.

Jul 3, 2012 · Is this a perm, magnet motor, or other. Based on the small size I am assuming it is a perm. magnet. If you can source (from an old theater or such) an old 2000 to 3000 watt rheostat lighting control, you can use that to control a xfrmer and a ac-dc power supply to vary it down to 0v (most rheostats have an off position).

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 11, 2006 · What kind of motor would I use to accuratly control the speed? I have a stepper motor available, but I'm not sure if it will meet the torque requirements. My understanding of stepper is you can precisly move to each step (the one I have is a 1.84 degrees/step), but you have not control at the speed between steps.

Jul 26, 2013 · Say its a 3 phase AC motor, voltage will have both a magnitude and frequency. I want someone to correct me if I'm wrong. Frequency in essence will control the speed of the motor to an extent. However, if you want the motor to go fast, you're also going to have to ramp up the voltage magnitude to keep the motor going to stay in sync with the ...

Oct 10, 2011 · I want to power and control a 2.5 HP, 120 volt GS Electric DC motor (part number 119022 if it makes a difference). The motor was taken from a treadmill along with anything else of electrical importance.

Mar 18, 2015 · The motor starts rotating if I increase the integral gain to 1 and the speed increases as I increase the integral gain and reaches the maximum value depending upon the supply voltage. If I stall the motor at different speeds, I get different values of Iq, say for 30 rad/s I have a current of 30mA and 60 rad/s, it is 50mA.

Jun 29, 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).

Feb 7, 2015 · Just curious, what do you think about a similar setup with say100 amp motor. Two of the 60amp controllers off ebay, now beings they have a simple potentiometer control knob, could one have the potentiometer removed and hooked directly to the control circuit of the other board to act as one, considering same input and out put with a couple diodes on feed side …