I'm building a small desktop CNC designed for milling PCB's, I need small DC motors w/ encoders (NEMA17 mounting style)
I need something like this, but a DC motor instead of stepper motors. I simply just can't get the accuracy from step motors. Brushed motors preferred & they need to be less then $40. I was hoping someone might know about something about this.
When using induction motors, we can scale down the physical size by increasing the rated frequency. Take for instance this 200hp 60HZ induction motor at 2127lbs, vs this 200hp 400hz induction motor at 85lbs. So for weight sensitive applications like aeronautics or EVs, the 400hz motor is the clear winner.
But what if we want to use a separately excited would field DC motor?
What is the theory underlying the fact that certain dc motors can be turned, by its load, in a direction opposite to the applied torque of the motor without harm, whereas, I suspect this scenario would damage the basic ac induction motor?
An example would be two separate, opposing winches pulling a common cable where one winch gathers cable against the torqure of the other winch (and motor) whi
I want to build a small robot with 4 motors (Key specs at 6 V: 75 RPM and 80 mA free-run, 85 oz-in (6.1 kg-cm) and 2.2 A stall.) and build 2 motor drivers like the one attached (one motor driver will control the motors from a side).
I have created the schematic based on the L298 data sheet and just added the 2 LEDs for visual feedback of the rotation of the motors.
Todays dumb question. I have a small DC motor out of an RC airplane and I am told that it is a 3 phase brushless motor. I always thought 3 phase would come in a much larger motor so I am questioning whether it is AC or DC? It has three wires coming out of it going to a controller or ESC. To my way of thinking, it would have to have a minimum of four wires if it was wye wound and six if delta.
Hi, Im troubleshooting some intermittent failure and would love to get some advices please!
The spec for the motor is 5mA to 100mA.
Power source is ~3V powered from the USB.
I confirmed all the motors functions (read ~20mA) prior installation to a housing (glued with epoxy and cure at 70C for 2 hrs), after cured, 2% of the motors has intermitten failure that reads below 5mA, however once i r
I've just finished building a robot with two movement motors and a reversing circuit (for when it bumps into walls). The problem I'm having is that when I switch it on only one motor spins. When I forcibly stop the motor that's spinning the other one starts turning and this one remains stopped. Only one motor is ever spinning..
Im using logic gates to do the logic then do the PLC
Lets say I have 3 motors, Motor A, Motor B and Motor C All could be online, offline
If I turn-on Motor B first, it is going to be Primary motor.
And If I turn on Motor C next, it is going to be Secondary
And if I turn on Motor A, it should be Tertiary..
If Motor C turned off then Motor A should become Secondary and Motor C will be t