An electrical actuator converting electrical energy into rotational motion.

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1answer
81 views

What is the type of this legacy motor and how is it supposed to be controlled?

A friend of mine is going to give me an old Dayton 8F047 which I would like to recycle, but it is now obsolete and I cannot find anything other than a schematic which is reproduced below. ...
-2
votes
1answer
70 views

using power bank to power a nema 17 stepper

I was wondering if it is possible to power this 3.75V/1.7A nema 17 stepper with a power bank which have a 5v/1A output like this one for example . Ps: I am new to the electronic world .
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3answers
82 views

Running 3-6V motors with 7.2V [closed]

I'm using the popular DIY motor: Which his operating voltage is claimed to be between 3-6V. I'm using a battery of 7.2V. I know that running the motor outside the recommended voltage range might ...
3
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2answers
194 views

DC motor and power

With DC motors, I believe the graph below depicts the typical performance: Does that mean, even for a high speed motor with a gearbox for speed reduction, the same characteristics apply? That is, ...
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1answer
53 views

Washing machine / microwave motor - AC or DC

If I take an old washing machine motor and try to convert it into a generator would it work and if so would it generate AC or DC? Same question with a microwave motor. I know it uses permanent magnets ...
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0answers
62 views

ringing shunt resistor on induction motor

I'm working on a three-phase AC induction motor driver. The main supply is 48V and I plan to operate in the 0-40A range. The six MOSFETs are driven by PWM signals via a gate driver. The PWM signals ...
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0answers
36 views

Purpose of resistors from phase to phase on 480V motor

I have inherited a project with a motor circuit that I cannot figure out the purpose of some resistors. It was initially designed for operation in Europe at 400V 50Hz. Since it is operating here in ...
0
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1answer
80 views

How to calculate the right motor size for a soil sifter [closed]

How would one calculate the proper size of an electric motor to properly drive a soil sifter? Assumptions: Screen: flat, 18"x24", 1/4" to 3/4" wire cloth (interchangeable screens), total weight ...
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2answers
44 views

measuring a bad motor and large current spikes in a brush motor [closed]

I am new to this forum, I am an EIT and I have been tasked to implement a fixture to measure high current spikes on brush motors when loaded and unloaded. I am at a loss here as I have never ...
2
votes
1answer
71 views

How to Raise and Lower an Object via Arduino/Photon

Completely new to anything dealing with hardware (Programmer person) and have no real clue as-to how I can accomplish what I want. The goal is to be able to move an object up and down (Specifically ...
2
votes
2answers
99 views

Function of characteristic curve of DC motors

I have found in the following graphic the characteristic curve of a locomotive with six DC series wound electric motors at 3000V. As a translation: the y axis describes, on the left, the force in tf ...
9
votes
3answers
1k views

In a brushed DC motor, why do the brushes have springs?

In trying to understand brushed DC motors, this post has been very helpful but I still have some fundamental questions about the brush mechanism. For instance, what is the purpose of the spring? And ...
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1answer
44 views

Produce current

Ok, so I was trying our an experiment to generate minute current. I got a battery operated gear motor which can produce current to light ant led bulb when rotated. I am trying to create an automation ...
-5
votes
1answer
78 views

How to build an Electric Vehicle (explain like I'm five) [closed]

I'm a business major investing time to learn more about Electric Vehicles. For starters, I wanted to understand the elements that come together to make a simple Electric Vehicle, maybe a scooter. I ...
7
votes
2answers
218 views

How does a hair dryer change its motor speed? Diagram included

I'm working on a side project where I need to figure out how a hair dryer works...so I took apart a hair dryer and made a circuit diagram (below). I am much more mechanically inclined than ...
0
votes
1answer
37 views

Is it possible to over-power a 3-Phase AC motor with a AC Controller?

If I have a 200kw motor controller, and a 30kw motor, is it possible to overpower the motor with the controller? My application is for an electric vehicle (golf car, small bicycle, and so on). I'm ...
0
votes
2answers
101 views

What are the risks of powering fan AC motor with Triac dimmer?

I'm going to replace current resistor potentiometer with arduino-controlled triac scheme, probably this module. I'm going to load it with 6 motors , 300W each. How bad the EMI gonna be (would I be ...
0
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2answers
103 views

Making a two speed motor - TRIAC and PWM question

I would like to create a dual speed blower which goes into HI when an SSR from a PID is activated. I would like to be able to control the speed of each of the high and low settings. When the SSR is ...
0
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3answers
35 views

Reducing give in bi-polar stepper motor axel

I have the NEMA-11 bi-polar stepper motor (http://www.active-robots.com/3322-0-28sth32-nema-11-bipolar-stepper-with-100-1). The issue is that I am able to turn the axel about 5-8 degrees without ...
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1answer
51 views

help for timelapse slider motor circuit

I need some help designing a circuit for a timelapse slider. Please bear in mind i am a beginner with electronics, so have mercy! The motor will be pulling a trolley (very slowly) along a set of ...
0
votes
1answer
59 views

How to pick a stepper motor

I'm building something that I want to control from mcus, and while I'm fine with the MCU part, I'm in the dark about motors and want to avoid buying too many of the wrong ones while I figure it out. ...
1
vote
1answer
57 views

Principle of working of diseqc motor

I'm interested in how diseqc motor works. I mean how satellite receiver communicates with it etc. Is there some literature explaining this? Which field of electronics is related to this? Maybe digital ...
0
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1answer
49 views

What type of motor is more desirable, if the requirement is to rotate a load with high torque by about 30-60 degrees?

Torque required is about 17Nm. The speed for rotation is very small about 10degrees/sec. The load is dynamic and I do not want to apply any torque more then 20Nm, this I want to achieve by using a ...
0
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1answer
46 views

Charging and discharging Ultracaps with a 12v DC Brushed Motor

I am trying to store small amounts of energy from a 12v motor with an ultracap. I'm thinking of a 3000F 2.7v cell from Maxwell. I am trying to find out info on charging ultracaps, specifically the ...
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3answers
78 views

servo not strong enough to move robotic link fully

I'm currently working on a robotic arm. The servo I'm using is the MG996R. i'm trying to make the servo lift a link that weights 55 grams and 20 inches long. The servo itself is powered with a 9v to ...
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votes
3answers
38 views

Enough power for 4 12V 0.95A fans at the same time [duplicate]

I am currently using 1 12V 0.95A fan to circulate air in my humidor (coolerator) and using an AC adapter rated class 2 120V 60/60 with an output of 9V 300mA. Can I add 3 more fans with the same power ...
0
votes
2answers
48 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 ...
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votes
2answers
81 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
112 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
193 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
67 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
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1answer
29 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 ...
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1answer
42 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
79 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.
0
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1answer
100 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 ...
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3answers
101 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
38 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
votes
1answer
41 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. ...
0
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2answers
131 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 ...
0
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4answers
84 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
49 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
51 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
161 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 ...
1
vote
3answers
248 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
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1answer
149 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
90 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
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1answer
57 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
224 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 ...