An electrical actuator converting electrical energy into rotational motion.

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2answers
44 views

Identify DC motor parameters using Least Squares Estimator

I'm not new to the concept of Least Squares, however, I find it difficult to figure out how to make it identify the transfer function for my motor. I will have my input voltage and an optical encoder ...
0
votes
2answers
75 views

Replacing electric Ice Machine Motor with a resistor in a Samsung Refrigerator

We bought a house 3 years ago and it came with a Samsung Refrigerator. For some reason the previous owner bought a fridge with an ice maker and never hooked it up. Well you cannot disable this feature ...
0
votes
1answer
100 views

Calibrating Servo Motor

I am working on a project on image tracking on MATLAB, by moving the mounted camera on a servo motor controlled by the Arduino Uno board, the data is serially sent to the arduino using USB according ...
0
votes
2answers
145 views

varying run capacitor for speed control of single phase motor

If I want to vary speed of single phase electric motor within say, 10 to 20%max of its rated speed ( or torque ), is it a good idea to change its run capacitor setting ? ( either via multiple ...
1
vote
1answer
65 views

3 phase AC motor wont start after overloading

A 3 phase induction motor is stuck with a heavy load and was making hum noise. After it is unloaded it still wont start. Any ideas where to start trouble-shooting? Would overloading activate the ...
0
votes
1answer
21 views

What calculations determine the choice of the overload relay trip class to protect a motor

I know that the motor trip current determines the choice of the trip class, but I do not know what are the range values for each one. Lets say that I have an engine with a trip current of 190. Somehow ...
0
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1answer
37 views

DC motor temporary speed change with simple Boost Converter

I would like to know is if it is possible to give a slight voltage change to a dc motor with simple electronic items. Meaning that the voltage would normally be a set amount (10v) but would either ...
0
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1answer
68 views

Efficient Single Phase Motor Speed Control

Usually triac based speed control vary the phase angle of firing to reduce the amount of power goes in to motor, and hence control its speed. this is not very efficient method, also it may not be ...
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votes
1answer
58 views

3 phase DC motor controlling without countroller

is it possible to drive 3 phase DC motor without a controller? how can I do it? I want to drive motor without controller because it's delivery is expensive.
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1answer
90 views

Will this servo stall detection circuit damage an Arduino?

I am part of a group building a project for school that involves a servo. We made a circuit for our Arduino to detect when the servo is under heavy load / stalling. The circuit we built detects stalls ...
0
votes
3answers
93 views

Use a microwave motor to power LEDs

I have an AC motor that came from a microwave turntable on the back it says 120v 2w 6rpm. I would like to use it as means to generate some electricity. I have a full wave bridge rectifier to convert ...
0
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2answers
52 views

How to determine the Solar-panel power requirement battery

I'm having a problem calculating the rated power requirement for my solar panel project. The panel will charge a battery that will power a 'micro' water pump. The power requirement for the pump is ...
0
votes
1answer
34 views

motor selection for equatorial telescope mount

I'm considering building a mount for cameras or telescopes which I would want to move at the rate the Earth spins (i.e., 1/1440 rpm). I've considered using the mechanism for a clock and just using ...
0
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1answer
39 views

Start capacitor on shaded pole to increase starting torque- how to size

Can I add a capacitor to a shaded pole motor to increase starting capacity? How do I size it? I have a single pole squirrel cage motor running a conveyor toaster that is dying while trying to start. ...
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votes
2answers
129 views

“What power supply do i need to power 60 1.5v dc motors that draw about 200ma?” [duplicate]

We're trying to rig 6 bundles of 10 motors at a time, so 60 motors in total on the same power supply. Each one normally is directly powered with 1.5v aa battery. We read the current as 200ma per ...
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votes
4answers
83 views

Three phase Motor rotation

Is it possible that a three phase motor still spin in the same direction it was even after the phases are interchanged.
-3
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1answer
48 views

what type of modification can i use in my MCU in conjunction with my SSC32? [closed]

Hello there guys im looking for a way to connect and use a DC motor with a Servo controller such as the SSC32? now given the fact that a Servo controller or driver has 3 pins, PWR GND SIG/PULSE now ...
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2answers
48 views

Micron-Scale Linear Actuation

I don't know a lot about linear actuation, but I need a precise device that I can control easily (using some kind of hobby board) that is able to perform linear positioning with a resolution of at ...
0
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2answers
126 views

Converting a DC motor to a generator

Can ANY DC motor become a generator if torque is applied to the shaft? example: Produce-Electricity-from-a-DC-Motor And by any, I mean the really cheap ones too. Or is there a specific type of motor ...
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3answers
172 views

Significantly reducing speed of single-phase AC motor

I have a 1/3hp single-phase AC motor spinning my drill press. With the maximum reductions available through pulleys it still runs 10x too fast for one of my applications (i.e., the chuck turns at ...
0
votes
1answer
113 views

Ramps 1.4 stepper motor Slaving

So I am looking to run 2 stepper motors for x and y axis with a ramps 1.4 board, but since their are only one stepper motor driver per axis i was wondering how to accomplish this? (I'm thinking a ...
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2answers
73 views

BLDC motor/PMSM parameters at reduced operating voltage

I was thinking about nameplate parameters of BLDC motors/PMSM and wondered what happens to those values if I operate the motor at a lower voltage as rated. Are my following conclusions correct? If ...
0
votes
1answer
52 views

Choosing Stepper Motor - Driver Combination

This is my first attempt at designing/building my own circuit and PCB, so please bear with me. I am building a small, portable device that makes use of a small, accurate motor. My goal is to make the ...
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3answers
209 views

Why alternators are used to generate DC?

Why is it that to generate DC, it's often an alternator that's used? Couldn't commutator rings be added and do without AC-DC conversion? I'm asking because I wonder how efficient it usually is for a ...
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1answer
78 views

Strange electrical noise from stepper motor

It's my first project using arduino. Simply trying to rotate three identical stepper motors, using three 293d h-bridges. Although it does work properly (meaning the motors do rotate as they should), ...
2
votes
3answers
128 views

Do I need a galvanically isolated step-down DC-DC converter to power my digital electronic from a battery pack that powers also the electrical motor?

I have a battery pack with lithium ion cells. The battery pack has a maximal voltage of 84V (it goes from 84V to ~50V -> depending about the current state of charge). I use this battery pack to ...
-1
votes
1answer
81 views

calculate encoder period from motor rpm?

Let's say I have a stepper motor which rotate at a speed of 1000 RPM and I have an incremental encoder attached directly to the shaft with 4096 PPR (pulses per revolution). How I can measure the ...
0
votes
1answer
36 views

Sizing a motor starter

That is the motor. Looks like the old version of a new Baldor M3558 2HP 3phase motor. I plan to run a 230v 3phase line to the motor, but I need a starter. This starter on Grainger looks ...
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3answers
85 views

DC Motor consuming too much current

I'm trying to use an H-bridge, which is connected to a wall power supply, to power a DC motor. The motor was originally powered by a 12V battery pack in a toy. Now my motor is consuming too much ...
0
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3answers
109 views

Is resisting DC motor bad for it?

If I keep the shaft of a DC motor in place while it is running does this harm it in any way? Is it bad for it at all?
0
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1answer
108 views

wattage consumption of three phase electric motor

i have a 5 hp motor in my factory . at load, it shows 3.5 ampere consumption ( when tested by a meter). is the consumption accurate? someone told me that 5 hp three phase motor will consume 7.5 ...
-1
votes
1answer
54 views

Motor pump slowed down due to suction blockage

I have a 1 HP, 220V motor pump which was working fine till recently. Last day, some dirt and dried leaves got into the foot valve and blocked the suction pipe. I ran the pump for sometime in that ...
0
votes
0answers
16 views

Driving LRA actuator with a driver

I'm using a driver DRV2605L to drive a LRA from the link below. https://catalog.precisionmicrodrives.com/order-parts/product/c10-100-10mm-linear-resonant-actuator-4mm-type The problem is that the ...
0
votes
3answers
71 views

Can I run a liquid-pump motor below its specified operating voltage range?

The liquid-pump/motor is a miniature one from ebay with its operating voltage rated as "6-12V". Even at 6V (the minimum of that specified range), it's pumping liquid too fast for my requirement. ...
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votes
1answer
55 views

In DC motor'name plate there is written only 12 or 24 volt there is no any description about current and power why?

In DC motor'name plate there is written only 12 or 24 volt there is no any description about current and power why?and in ac motore there is written all details about voltage and current and power.
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3answers
51 views

Generate Power off of several motors at once

So in working on a project, I am considering generating power using several small 12V motors (made for DIY toy cars, very cheap on amazon) or by using one bigger electric scooter motor (24V, 250W, ...
1
vote
1answer
121 views

How do I change rotation direction of single phase fan motor?

I have a single phase AC motor. I found it from Photocopy machine. That motor same to Fan motor. It has a capacitor to make phase angle. I don't know what is the correct name of my motor. Can I ...
0
votes
1answer
108 views

H-Bridge driver circuit design

I have built the following H-bridge driver circuit (The red resistors R9 and R10 were not included). However during testing I have found that I am constantly blowing the high side P-Channel MOSFETS ...
0
votes
1answer
95 views

Share battery pack with Arduino and DC motors

I used 6 rechargeable AA batteries (total 7.2V) to power my Arduino (UNO R3) Car's two DC Motors (using L293D IC as motor driver). I used separate 9V battery to power Arduino itself. But I want to ...
1
vote
1answer
77 views

Can I use any capacitor for a 2 phase AC motor?

So recently I got my hands on an old pump motor, unfortunately the connection diagram is missing. I have already determined this is a 2 phase motor, and that in order to make it work I need a ...
0
votes
3answers
75 views

Little confusion about dc motors

So for whatever reason I'm having a little bit of a problem understanding why every dc motor explanation says the current switches after every segment in the armature. I mean the current is going to ...
-2
votes
3answers
99 views

Which motor would work best as a generator? [closed]

i've been doing a lot of research into motors to use as a generator in a medium sized wind turbine project. I am lost as to what to do, will a large AC motor with a bridge rectifier be a good ...
0
votes
2answers
45 views

Using a Servo motor as load on a system

Can a Servo motor (or any electric motor) be used as a load on a system ? meaning can it reprisent for example a certain dead weight ? In the picture below you can see a motor driving 3 gears, to ...
0
votes
2answers
77 views

Burning Temperature of Copper Winding of Motor

Burning Temperature of Copper Winding of Motor. I Have 3 motors 150watt 0.75Amp 220V in Copper and Aluminum and Copper clad aluminum. I want to know the maximum internal temperature of these motors ...
0
votes
0answers
86 views

How do I calculate the number of turns per slot on a stator?

I am in the process of winding a split phase permanent capacitor motor running 1/3 at ~1720 RPM 120V 60Hz. It features 4 poles and 24 slots on the stator. The motor had 18 AWG magnet wire. I am ...
1
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1answer
88 views

Metal sleeve around cassette player motors?

I have recently taken apart a few cassette players to get motors, and I have noticed there is always a metal sleeve around the main drive motor. Here is an Ebay product photo showing this on a ...
0
votes
5answers
161 views

Driving a DC Motor without diodes

As you know, H-bridge circuits are used in order to control DC motors. Switches S1-S4 are closed to turn the motor in one direction, S2-S3 are closed for another. But at the time of changing motor ...
0
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1answer
55 views

How to generate constant movement given variable opposing resistance?

I need to generate constant movement in one direction given a variable opposing force even while "stalled" (no net movement in either direction) and when the opposing force is greater than the force ...
0
votes
2answers
117 views

Arduino hacked rc car, H bridge, logic voltage overwhelmed

I have hacked my old rc car like in this tutorial here I have measured manually the h bridge logic voltage (the voltage that the transceiver send to the h bridge) , which is 3.7volt in the ...
0
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2answers
48 views

Hooking up a variable frequency drive

I have a 3-phase blower motor that I am looking to control from a Danfoss VLT 2800 that I purchased on eBay. I am going through the manual and I see this table for the mains connection: . I have in ...