Questions tagged [dc-motor]
A common actuator in robotics; it's usually made of a static magnet (stator) and a set of moving inductors, acting as electromagnets, connected to the circuit through brushes. Brushless motors use phased clocks with electronic circuitry to generate motion.
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Electric moped PWM power diode failure
I'm back with my shoddy moped PWM project :)
Here is a link to my previous question which is directly related to what this question will be about : Electric moped PWM MOSFETs failure
Quick recap :
I ...
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Is a flyback diode needed when using an RC snubber?
In order to minimize ringing when switching the mosfet, I had to implement an RC snubber circuit. Now, in that case, is the flyback diode still required?
Also, I measured with an oscilloscope the ...
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RC receiver/transmitter motor control circuit not turning motors
I am trying to make a simple RC Controller/Receiver Motor Control Circuit to eventually to control a tank drive full size mobile robot. It is a intermediary step before I connect my raspberry pi to my ...
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Is this schematic ready to be made into a circuit?
I made this schematic for a board that will be the brain of a lamp I want to build.
The lamp will be able to move in 2D (up-down, front-back) with two motors which are connected via J3.
The lamp has ...
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Correct A4950 usage
I want to control a DC motor (24 V) with an ESP32.
Instead of creating my own H-Bridge I decided to use an A4950:
[...] A4950 is capable of peak output currents to ±3.5 A
and operating voltages to 40 ...
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Can a simple DC motor detect physical resistance or manual movement?
I'm currently fixing the tray mechanism of a CD player. I have replaced the broken cogwheel and the drive belt, but one problem persists: sometimes when I press the "open" button, the tray ...
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Problem with an Arduino DC motor controllable circuit
I am a material science student currently working on a project to build a simple circuit for controlling the speed of a DC motor. My goal is to avoid using motor driver modules by utilizing a MOSFET, ...
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Is thick or thin wire better for motor winding? [closed]
When winding a motor, is it better to use thick copper wire or thin copper wire? Keep in mind the space is limited so using a thin wire will lead to more turns and thick wire would give less turns in ...
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I have a 9V DC motor. Does it always consume the same amount of power? [closed]
Let's say I have an Arduino + motor shield connected to a 9V motor. At rest it consumes X watts. Now when I activate and spin the motor it consumes Y watts. Is X=Y?
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Motor type require for robotic arm
I am making a tennis playing robot. There is a tennis racquet mounted on a robotic arm. I want suggestion on what kind of motor will better solve the purpose.
The arm consist of multiple motors but ...
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DC generator and armature reaction and interpole
The magnetic field produced by the interpoles opposes the armature reaction field and works to shift the MNA back toward its correct position. Therefore, the magnetic fields from both the interpoles ...
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How to combine a 12V DC Motor in a Light Fixture with Dimmer & 12V DC to 110V AC Inverter?
I have a question regarding a light fixture I'm building that also has a motor in it. It has geometric shapes that spin slowly around the light (almost like a mobile) and this is what I'm using the ...
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How do ultra light high power BLDC motors achieve such high power-to-weight ratios?
I was searching for high power/torque density of BLDC motors, but when I compare the commercially accessible ones to ultra high end motors, they always make the commercial ones bite the dust.
For ...
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Electric moped PWM MOSFETs failure
I am back with my PWM moped project. Here is a link to my previous question if you're interested:
Advice about power MOSFET layout and heat management
Here is a quick summary of my circuit along with ...
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Confusion understanding series/parallel relationship of mechanical components of a DC motor in Simulink Simscape
After watching this youtube video, I am trying to implement Simscape model of a DC motor in simulink - see snapshots below.
I understand from both photos that the electrical components' resistance and ...
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What Causes Hand- Wound and Machine-Wound Motors to Have Different kV? Expected Efficiency and Power Differences?
I am trying to understand the motor power and efficiency of two identical motors with the only difference being the winding technique (hand-wound and machine-wound).
Both are essentially the same hub ...
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confusion about the input values for an LN298N driver
I want to control a dc motor via a LN298N driver. I get the basic setup but I am confused about the values for the input.
Here is my setup:
(the red and black cable connect to a 6V battery)
I want to ...
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Do I need the parameters (armature current, field current etc) to do part 2?
I've completed the first part, but currently stuck on the second. Our lecturer didn't give us much to work with, so I felt completely lost trying to do this. I've been trying to complete this for a ...
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How to make a dc motor ramp up/down
I am a model railroad hobbyist and enjoy dabbling in electronics. I would like to build a small circuit that will let the DC motor that pulls a locomotive take several seconds to reach full rpm. Also ...
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DRV8835 motor kickback affecting quadrature encoder
I am trying to use a quadrature encoder with some DFRobot DC motors on my custom PCB. They work fine at low speeds, but at high speeds they don't work (count each others ticks, etc). I was very ...
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Grounding issue with PWM fan controller on Raspberry Pi Pico to drive 12 VDC fan
I'm trying to build a PWM fan controller for an industrial Noctua PWM Fan (NF-F12 IndustrialPPC 3000 PWM). You'll find the schematic below.
The fan is powered by a 12 VDC power supply (...
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Is the 7809 bad for a DC motor?
I have a small 12V, 3S1P pack of 18650 cells. I am trying to power a 9V motor, but when I turn it ON the motor becomes very unstable, it spins, keeps running slow, then slows down, sometimes it does ...
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Is my setup for a 5V motor project faulty?
I'm trying to get a motor (5V nailbrush, no name, no specifications whatsoever) to spin for a set time and pause for a set time using a PIC10F200 microcontroller in conjunction with a 2N2222 NPN ...
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Mechatronics/Electrical Engineering question
If I wanted to determine stall torque on a DC motor, how would I do that? If I'm referencing the data sheet that states: at 3 VDC, measured 150 mA @ 120 RPM no-load, and 1.1 Amps when stalled.
Would I ...
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DC motor stalling resets Arduino - A good thing? [closed]
I have a small DC motor that used to draw from a 3.7 V lithium battery in a small Chinese made device. I did away with the PCB to use an Arduino UNO with my own programs.
I tried using motor shields, ...
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How would you Improve the Smoothness of a 12V DC Motor Drive with Limited PWM Frequency?
I am developing a control system for a 12VDC brushed motor rated at 500W, which is part of a larger project. Currently, I'm using PWM for motor control, but I'm restricted to a maximum frequency of ...
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I am Seeking Help to Adjust DC Motor Simulation Parameters in LTspice for Accurate Current Modeling
I'm relatively new to LTspice and motor diagnostics, but I have managed to build a PWM-MOSFET control circuit for a DC motor. My goal is to simulate this project to evaluate potential ripple currents ...
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IR2104 driver for 7 A motors
I'm currently working on a driver board for a pair of small FIT0185 motors with a nominal current draw of 0.35 A and a stall current of 7 A. I've opted to make two H bridges using four IR2104 mosfet ...
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PCB trace width for high current motor driver
This post is a continuation of Trace width for PCB motor driver board, with a few follow-ups and questions.
Firstly, I'd like to mention again that the motors I want to use have a maximum current of 7 ...
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Seeking Advice for Improving a Heavy-Duty Unidirectional Conveyor Drive Using a Car Battery (PWM-Driven, Low-Side Switch MOSFET (~60 A, 12 VDC)
I am developing a robust conveyor system powered by a 12 V car battery, which requires handling significant current. Our goal is to integrate a simple yet effective drive with adjustable speed control....
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Trace width for PCB motor driver board
This is my first time working on a PCB microcontroller board.
I'm working on a project that involves the control of several DC motors with encoders, and I've opted to make my own microcontroller board ...
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Why is my NEMA 14 stepper motor overheating when idle?
TLDR: motor overheats >200 degF and I don't know why.
I have a NEMA 14 stepper motor (14 N-cm) driven by an A4988. The logic is controlled by an ESP-32 WROOM MCU, and the motor is powered by a 24-V ...
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Transistor recommendation needed
I'm looking for suggestions on how to control a DC motor with a transistor and a µC. The input voltage is 15 V DC, and the resistance across the two pins of the motor is 3.3R, so we'll call it 5 amps. ...
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H-bridge motor braking via NC button
New guy here. I'm doing some work for an engineering professor; he wants me to implement stop/braking capability on the robot we are working on. The platform used is a Pioneer 3-DX, with two motors ...
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Thermal efficiency circuit to move an DC electric actuator with PWM
I am looking for a circuit to move an electric actuator with PWM.
The actuator is 12V (datasheet) and the normal operating current is ~2A but can reach 8A maximum under some conditions. For that ...
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IRLZ44N vs IRFZ44N performance - Driving a 12V DC motor(3 speeds) with 12V or 24V supply voltage using PWM
I am trying to run 3 speeds on a 12V DC motor with either a 12V or 24V battery using PWM. I had a working breadboard prototype based on the schematic attached, with the complete code using IRFZ44N ...
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Battery draining and resistor question [closed]
Say I have a motor that uses 9v @400ma, but it's powered by a 12v battery.
I 'd use the ohm law and get a: 7.5 ohm resistor.
But, as soon as the battery is being drained, let's say now the battery is ...
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Offline open circuit detector for PM DC motor
How can I create a circuit to detect if a motor is connected or not without running the motor?
I'm designing a power wheelchair and need to implement an offline open circuit detector for a Permanent ...
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Can one connect 2 or more DC motors of same or different excitations in series or parallel combination,and how does it work [closed]
I am trying to understand DC motors,but i had this doubt throughout the machines course. .How does speed and torques and speed gets affected(major query)
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How can I determine the input voltage for running a DC motor? [closed]
I have a DC motor that has been on my bench for months. I don't know where it came from.
What does it mean when a DC motor has this product number and specifications:
ZYT3424F-L94
DC110V
Its ...
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Stop electric motor when toy elevator reaches end of travel
I'm working on a simple toy elevator powered by some small DC electric motor. I know basic electricity. I figured out how to set up simple circuit with 3-position switch so I can turn on the motor in ...
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How to build a homemade diy motor generator
I am doing a school project and it would be great to have some help. I have built a small generator using a pringles can and enameled copper wire, but when I spin the magnet inside, the voltmeter I am ...
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Calculating supply voltage for a series DC motor
Consider a DC series motor with nominal caracteristics : U=120V, Pa = 3kW, N = 1500 rpm, r = 0.2Ohm inductor resistance, R = 0.3Ohm windings. Suppose the motor isn't saturated and neglecting all ...
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Is this MOSFET compatible with this coreless motor?
As a warning, I will state at the beginning that this project is a hand-me-down and I do not have the complete specifications of components. This is a part of the problem.
I am working on building a ...
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DC motor MOSFET driver (with flyback diode) keeps burning through
I am trying to build a (simple) DC motor MOSFET driver with an unknown specification of the motor.
This is my schematic:
The problem is that the circuit works for one, maybe two cycles (1 cycle = 1 ...
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Regarding Torque of DC Motor with PWM, Atmega328 and MOSfet
I am trying to develop a system having a DC motor (geared 12v 200rpm). There's a rotary encoder to adjust the RPM of the motor. I am using Atmega328 as the main MCU. To drive the motor I am using ...
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Can I safely "home" a 24BYJ28 geared stepper by ramming it into the limit?
I am building a toolchanger for my 3D printer and I want to use a 24BYJ28 geared stepper motor for the tool changer.
When I power up the machine, the machine doesn't know the current position of the ...
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MOSFET or IGBT for DC Motor
Hope you all have an idea. I've got a DC motor (universal, maybe?) with 2 brushes that was running on 120VAC with a bridge rectifier. Says it's 13Amp. I'd like to PWM drive this motor from battery ...
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How to increase the revolutions of the DC micromotor model 180 12 volts
I need to make the motor draw 12 volts and 2 amps at idle at 40,000 rpm.
I don't know how to properly retrofit an existing model 180 DC micromotor.
Specifically:
What thickness to take the wire
...
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Questions About My Perpetual Motion Idea [closed]
Before you read any of this, this is just an idea. I am not an electrician, I am not a contractor, I am not a physicist, or anything like that. I just have an idea that i think could possibly work. I ...
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