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An electrical actuator that converts electrical energy into rotational motion or sustained linear motion (linear motor). If the specific type of motor is known, it is helpful to use or add a more specific tag, such as dc-motor, brushless-dc motor or induction-motor.

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I have an artificial Christmas tree that has both lights and a small motor that slowly slid the tree. The base with all the electrical components got wet during storage. After letting dry and plugging ...
Michael Mior's user avatar
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I am working on an application of conformal mapping to the computation of the magnetic field in motors based on this paper, but I have trouble understanding how to compute the instantaneous current of ...
Leroy's user avatar
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I need some help with a DIY circuit. My son has created a mashup of a small R/C car, and a Lego car, to create a car with the front/steering of a R/C car powered by a 3.5 volt battery. The rear ...
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I'm trying to send PWM signal to MOSFET gate to control 12VDC 2A motor. The NE555 circuit is built as shown in this article (https://www.build-electronic-circuits.com/555-pwm-circuit/) with the same ...
steve d.'s user avatar
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I removed the YYG-80-1 dewatering motor from a Defy twin-tub (top-loader) washing machine because the spinner wasn’t working. I’m trying to figure out if the problem is with the motor itself or ...
Clint William Theron's user avatar
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When looking at electric racing series such as Formula E or Extreme E, the electric motors are very loud on the cars. On the other hand, very high performance consumer electric cars such as the Tesla ...
Mach5's user avatar
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I am designing a motor controller for a switched reluctance motor (SRM). I found an application note (AN) that discussed how to create a bootstrap circuit when the circuit is in a dual forward ...
Andrew Cline's user avatar
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I am studying the theory of brushless electric motors and do not understand how to calculate the torque delivered by a motor. Let's assume a PMSM brushless motor using a FOC. I found these two ...
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I'm developing a small DIY project, but I'm still quite a beginner. I've heard that it's better to distribute the GND from the power supply in a star pattern. As you can see in my diagram, I'm doing ...
Luca Hofmann's user avatar
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I want to make a growler to test motor rotors / armatures. I want to use a microwave oven transformer, removing the secondary coil, cutting the centre out (where the two red lines are) and removing ...
Mazim Ma's user avatar
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I have disassembled a 20V cordless drill. It uses a two-lead brushed motor controlled via a PWM signal. Out of curiosity I connected both motor leads to an oscilloscope and measured both against a ...
user516079746's user avatar
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I opened up my heating system zone valve, and found this little motor. I am not sure how it works. I understand the working principles of 3 phase induction motors and 3 phase synchronous motors, I ...
Norman's user avatar
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I’m working with an three phase direct drive motor. Normally the rotor spins while the stator is fixed, but what if I mechanically fix the rotor and instead rotate the stator around it? What would ...
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Electrical motor sizing issue: I have a 500 W motor rated for S3/25% with service factor 1. Bonus complication since it has a gearbox attached. We are discussing if it makes sense to 'uprate' it for ...
Lorenzo Marcantonio's user avatar
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Recently, I was interested in star-delta conversion formula and I wanted to test it on a 3-phase motor. First, I connected its second terminals together to have star configuration, and I measured each ...
enis's user avatar
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Let us assume a torque control of a PMSM motor, where the parameters to be set are Iq and Id. 1) Is it normal that by setting IqRef the rotor rotates clockwise ... while by setting IdRef it rotates ...
toby514's user avatar
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Im working on limiting the resistance range of a potentiometer that feeds into a motor control unit. This motor control units runs an electric motor. We want to limit the joystick switch pot range to ...
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I have two main question about the subject of "Quadrature encoder" of DC motors. I provide the following link of a DC motor with integrated encoder: https://www.aliexpress.com/item/...
learn design's user avatar
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I have a brushed DC motor which I am trying to make easier or harder to turn by hand (something like a haptic feedback). I have accomplished this previously by putting power resistors across the ...
Butter's user avatar
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Can I apply (and do I need apply) grease to the surfaces of rotor and inside of stator in an AC (alternative current) motor?
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Is my intention to do SPWM on BLDC using 32bit MCU with 6PWM. To do this I will be using 512 point sine LTU. I already do this by just feeding the PWM outputs of the MCU and I'm able to move the BLDC ...
Gaston Melo's user avatar
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This might have been asked one way or another different times, but I found contradicting answers everywhere, not only here but in online forums as well. Plus, I have a few thoughts that I have not ...
popeye's user avatar
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I'm currently trying to throttle an AC brushed motor, but want two settings. I want it to be either at full throttle or at a lowered speed. Can I use a resistor and SPDT switch to change the motor ...
Joshua Mendoza's user avatar
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I'm developing a motor driver for a sumo robot, and while trying to understand better how to actually move the motor, I stepped in something I didn't quite understand. Here follows the truth table of ...
Marco Antônio Carnevali's user avatar
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Driver Current The PMX-2ED-SA will have a maximum rated current output of 1.5A. The current Settings should not exceed the rated current of the motor being used. Setting the driver current higher than ...
esraa elmahdy's user avatar
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I have a woodworking lathe with a motor controller that had a blown fuse. I relocated the fuse to the side of the enclosure. The lathe now powers on, but the potentiometer no longer controls the motor ...
bran's user avatar
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I have been working on a torsion testing machine (attached is the electrical schematic). The actuator is a NEMA 42 stepper motor which is being run at its highest current setting (5.9 A RMS/ 8.2 A ...
Sudhish's user avatar
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I'm currently designing something that basically resembles a linear actuator. A BLDC motor that drives a threaded spindle and moves something. I have a fair amount of experience with brushless motors ...
Blockbuster's user avatar
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I am trying to spin a BLDC using discrete components with an STM32F030C8T6 and using its TIM1 to control the high and low sides. High and low sides are controlled by NPN transistors that each control ...
Ali Mustafa's user avatar
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I have an old car seat adjustment switch that has a forward backwards button, which I want to repurpose to control a 12v motor in the same way. Looking at the wiring there are 5 wires coming out of it....
Node Zero's user avatar
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I have bipolar stepper motor of following specs: 12 V, 0.5 A, 0.43 Nm, 24 Ω, 36 mH. Back-EMF value is 0.0637 Vrms/RPM, measured by spinning it with power tool and measuring open coil voltage on scope: ...
Milek7's user avatar
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I have one simple question related to changing direction of a 220V split phase AC motor. Here is the circuit diagram: The operation is as follows: When relay 1 is activated the motor rotates in one ...
Bavly's user avatar
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I want to use a MDDRC10 motor driver with a Raspberry Pi Pico. But I can't get it to work from the manual. As I understand it from page 3, anything over 1.5 V will activate the channel and then I can ...
user3553471's user avatar
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I am building a waiter robot (if you don't know the term they are robot which can be used inside cafe or restaurant to deliver food or coffee). I want to use a BLDC motor as they are quite and ...
fedi makni's user avatar
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I'm working on a project to control an old vending machine (Automatic Products 113 Snackshop) using an ESP32, but I'm having trouble figuring out how to sense a full revolution of the 2-pin vend motor+...
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I am seeing a LISN schematic from MIL-STD-461 document for EMI setup. I have a motor driver (Brushed DC motor driver) and EMI filter as EUT or DUT(device under test). Where should I connect outer ...
James's user avatar
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Motor is from a Robland XSDB-310 jointer/planer with two remote capacitors. Everything worked before removing the motor, 1-to-1 wire connections from the panel + ground. The two remote capacitors ...
Scott's user avatar
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Background; Mechanical Engineer here and long out of college. I am completing my first home automation project using a PLC, goal is to better my understanding of industrial controls. I need hardware ...
Lost_Engineer's user avatar
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2 answers
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I have this little haptic motor. Should I connect the casing of it to ground or leave it floating?
KOEG's user avatar
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What will happen with power and torque if I supply simple induction motor with constant RMS current at different frequencies? Let's consider an "ideal" motor. No or very low losses (Eddy ...
James20's user avatar
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Working on this 230V 3hp submersible pump motor. Obviously the start capacitor blew up, and there was significant heat or force in the windings to destroy the strings holding them together. The first ...
Sean's user avatar
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1 answer
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I’m a PSI prep student, and as part of my studies, I’m working on a solar tracker system. My part focuses on studying the motor (the lower pivot that serves as the azimuth axis). Indeed, I’m trying to ...
Lili's user avatar
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I'm working on an electric motor dynamometer system and trying to get efficiency measurements for our inverter and motor by measuring DC power, AC power, and mechanical power. Currently trying to get ...
w00t's user avatar
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I recently started working on an inherited design that uses an MP9928 step-down converter to drive a 12V fan (~5A) off of a 20V battery. Initially, the back-EMF of the motor was killing DUT's, so I ...
Drewster's user avatar
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2 answers
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I have a 3 phase dual voltage motor 400V/230V but the way it should be used is that if you have a 400V system you are expected to use a star connection so that the motor sees 230V and if you have a 3 ...
Stonie's user avatar
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I googled a bit and it looks like (only way) stopping electic motor (alternating current motor) shutting down/shorting the power line on the board. I am looking for stop it wirelessly. I noticed that ...
Cloud Cho's user avatar
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I am designing a BLDC motor controller board, up to 40V and 30A. It seems like it is working at least pretty well, the motor I am driving is spinning pretty smoothly. I measured the current of a ...
Nick's user avatar
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I’m currently a first year engineering student building a 6 DOF robot arm and thought of making my own stepper motor driver for the NEMA 17 just to learn a bit more about electronics. I have all of ...
Aryaan's user avatar
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2 votes
3 answers
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I'm volunteering at a non-profit railway museum where we're rebuilding a 1940 45-ton diesel-electric locomotive. Currently, it has a diesel engine that, in proportion to the throttle position, runs ...
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When wiring a 12V pump to 2 low-side PWM DC motor drivers in parallel, when is it necessary to add any of the four diodes shown in the diagram below? Sometimes, both drivers will be PWMing. Sometimes ...
Zade's user avatar
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