An electrical actuator converting electrical energy into rotational motion.

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9 views

How to Reduce Serial Noise from Refrigerator

I am controlling the compressor of a compact refrigerator using an ArduinoMEGA and an optoisolated relay block. The Arduino is connected to the PC using a serial over USB (Atmel version). Since the ...
0
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1answer
33 views

Active electric motor for on specify voltage

Is it possible to power on electric motor ( a little ) only when the input voltage is 1V by example. The electric motor is supply by another source (9V by example) With diode?? Or something else? ...
-2
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1answer
64 views

How to open a small door using a dc motor?

I want to make something like this https://www.youtube.com/watch?v=xI8LUkUttfA&list=WL&index=34 I don't know where to find the motor or if the right motor will be strong enough to lift the ...
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0answers
33 views

What is the reactive force on an electric motor?

I'm trying to apply Newton's third law to electric motors. If an armature is rotating at high torque, to move/rotate an object, what is the equal and opposite force being applied to the motor? Is it ...
2
votes
1answer
32 views

Where to buy PMSM motors? [on hold]

I read a research paper that explains why permanent-magnet synchronous motors (PMSMs) are better suited for high-precision position control than brushless DC motors (BLDCs). I'd like to buy one, but ...
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0answers
38 views

Belt moving around [closed]

I need a syringe to move about in a set loop. The 'map' for it to move on is very squiggly, and it needs to move a short distance precisely (to the nearest 0.1mm). How to I do this? Also, I will be ...
0
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1answer
56 views

Make a brushed DC motor move “free”

I want to place a DC motor on the driveshaft of a marine steam engine. Since i do not want to loose or add power to the drive but only having the motor there for backup reasons, i want to let the DC ...
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1answer
31 views

Dupont connector for 5A

I have to do a connector adapter, that has to handle 5A current, from a pwm motor driving circuit(power mosfet), to the motor. I have not found the current rating for dupont connectors It is ...
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1answer
27 views

What is the difference between an H-Bridge Motor Driver and Dual motor driver board?

I don't understand the difference between a motor-driver like this IC H-Bridge Motor Driver and a motor-driver like this Dual Motor Driver Board. When reading about them they do the same thing but the ...
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2answers
57 views

resistive braking for induction motor?

It occurred to me that since single-phase AC induction motors can act as generators, it might be possible to brake an induction motor with a resistive load. The basic idea is that when you want to ...
-1
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1answer
19 views

reverse load on dc motor( series/shunt) and its speed control

if dc motor produces 10 Nm torque , and load acting on dc motor in reverse direction produces 6 Nm , then net torque is 10-6= 4Nm, dc motor consumes current corresponding to 4Nm , and so speed becomes ...
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0answers
34 views

Help with 8 wire stepper motor [closed]

Hey guys here is a picture of my 8 wire stepper motor. Unfortunately There is no sign of model number on it. Using a multimeter here's what I found Red - black: Beep Black - white : Beep Red - ...
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1answer
43 views

Need a very low power, low force motor/actuator

What are some alternative types of motors/actuators that can be used instead of servos? I need some way of inducing a slight bit of motion/movement but with very little force and power consumption. ...
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0answers
116 views

Generating a PWM signal to drive stepper motor [on hold]

I need to drive a stepper motor with a PWM signal. I am using the Panasonic FP0RC16CT to create the signal. How would I go on about achieving this? What instructions would I use? The signal needs to ...
1
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0answers
17 views

Precise rotational movement and locking [migrated]

I am constructing an autonomous, unmanned boat for voyages of several months. Traditional autopilots use a linear actuator to move the tiller but require several adjustments per minuted, will consume ...
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0answers
13 views

Induction motor constant flux calculation

I am working on a model of Indirect Field Orientation Control of Induction Motor in Simulink/Matlab. I have it all worked out, except the flux command. I would like to keep the flux at constant value ...
-2
votes
1answer
53 views

120v AC motor on 220v supply? [closed]

What happens when a 120v 15A AC motor is connected to a 220V supply? In case this is a destruction, what should be the power rating of a converter that is to be used?
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0answers
47 views

using a sycnrhonous motor to drive the voice cone in a speaker

It is possible to consider any arbitrary signal as a continuous function of phase and amplitude. In particular, a digitized audio recording (assuming Nyquist was satisfied) can be transformed into a ...
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1answer
67 views

How to prevent DC motor from dropping voltage of supply when switching on

I have a circuit which uses an ATtiny85 output to a transistor (S9013), which will trigger a relay that controls a motor. The reason for the transistor to relay is because I do not have a transistor ...
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3answers
129 views

Relay not switching correctly, controlled from ATtiny85, output to motor

I have an ATtiny85 switching an NPN transistor, which will in turn switch on a relay that will run a motor. Everything is run off a 3.7V 18650 Li-Ion battery, but I have since moved over to a variable ...
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0answers
13 views

PM synchronous motor parameter measurement

I am trying to find the parameters of a surface mounted PM synchronous motor using the application note AN4680 (PMSM Electrical Parameters Measurement) and had some queries regarding it. The Ld ...
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0answers
67 views

Current/Torque - curve for an ASM

There is this exercise where I don't have a clue how to get the solution. It's about asynchronous machines, where with the help of field coordinates the string currents (istr) are split up into ...
2
votes
2answers
103 views

How to find I-V characteristics of motor?

I have a motor that I'm turning with another motor. I can determine the speed of rotation with a tachometer. One motor is powered with a power supply and it is coupled with another motor. I need to ...
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3answers
42 views

ATtiny85 to control a relay, which will turn on and off a motor

I am trying trying to control a 5V relay (SRD-05VDC-SL-C) with the ATtiny85. I have a simple sketch uploaded (Blink without Delay example): ...
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0answers
53 views

Forgot to connect ground for H-bridge, now it doesn't work?

I have an TLE5206 h-bridge IC that can handle 5 amps and I'm giving it a supply voltage of 12V. I was just testing the motor with the power connected but I noticed that the ground cable broke off ...
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0answers
27 views

Explanatory electromechnical animations: What software used?

My friend is trying to show a hall effect sensor setup. He wants both the electrical oscillograms and the mechanical view of a rotating signal (from the motor). What software exists to aid in ...
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2answers
65 views

Does frequency equal the number of steps a stepper motor will do?

http://www.thorlabs.us/thorcat/ETN/ZFS13B-Manual.pdf I am supplying a driving PWM signal to this stepper motor. However, I want to specify exactly how many steps to take with this motor. Does the ...
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1answer
22 views

Power requirements for offset motor or other forms of vibration

I need to generate vibrations to provide tactile feedback. The device has minimal power available. What type of power do offset motors require? Are there other forms of vibration that can use less ...
0
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1answer
62 views

Is there any way I can power my 120-220V AC motor from a battery

I am building a new robot, it's a little bit heavy, so it's hard to find a motor that can push it. I am thinking of a way to use machines at home (I have two options: Automatic hair drying machine and ...
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0answers
43 views

Would there be advantage using 2 smaller motors on Tesla car's rear axle? [migrated]

Let me be clear: I am speaking about the rear wheel drive model. After I've asked https://mechanics.stackexchange.com/questions/15342/number-of-motors-rwd-tesla , it seems Tesla's rear axle has only ...
0
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1answer
65 views

Motor without magnetism [duplicate]

Every electric motor I know, takes electricity and converts it over a magnetic field, for generating movement. Is it possible to generate significant movement, based only only on electrons movement? ...
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0answers
14 views

Number of motors RWD Tesla [migrated]

Tesla always speaks about one motor on its Rear Wheel Drive Model S car. But every time I see a picture of the rear axle as in the search ...
0
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2answers
87 views

How to reduce the amplitude of my PWM signal?

I'm using a PWM control signal that ranges from 0-24V to drive a stepper motor. However, the datasheet in the driver says it should range 0-5V. How can I bring down the amplitude of my PWM control ...
3
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3answers
391 views

MOSFET overheating in pwm control

I'm using a MOSFET to switch a 24V, 15A load, with the gate input being a 500Hz PWM signal. However, this is causing the MOSFET to overheat and blow. Any suggestions would be appreciated. R1 = 100 ...
0
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1answer
65 views

Systematically, what would happen if I give a crank at the shaft of a motor?

In particular, I would like to know what would happen if I crank the shaft of the following kinds of motor: brushed DC, brushless DC (the kind used in computer fans now) and 6-coil 3-phase AC ...
-1
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0answers
27 views

DC Brush Commutation system simulation

Hello plz help me regarding simulation of brush DC motor Commutation system to analyse the commutation system .. as i am from mechanical background but needs some simulaton to corelate electrical ...
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votes
2answers
47 views

Using transistors to minimize the number of Arduino pins used for this stepper motor driver

Alright, I know very little about what I am currently asking about, but here is the gist of it: I want to build a cnc machine out of some old floppy drives. I purchased a couple L293D dual H-bridge ...
2
votes
1answer
139 views

DC Motor as a Generator Voltage and Current

Is there any way to calculate the expected voltage and current, assuming I am turning it at the specified RPM value, when using a DC motor as a generator without physically testing it? In my case I ...
-1
votes
1answer
49 views

Controlling 1.5V motor using microcontroller output

I want to control a 1.5V motor using a microcontroller output. The motor draws about 450mA stall current. I am considering to use a Darlington transistor such as TIP120 to bridge the microcontroller ...
0
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1answer
68 views

How do I supply power to two 18v 2.4 amp motors?

I have two of these motors: http://www.radioshack.com/radioshack-super-speed-9-18vdc-hobby-motor/2730256.html#q=motor&start=6&tab=tab1 According to Radioshack's specs (which may be off, not ...
1
vote
1answer
65 views

Resistance and Inductance of a ceiling fan motor needed to spec snubber

I'm looking to specify (well, suggest) a RC snubber network for someone over on diy.se who is having EMI problems with his ceiling fan knocking out his TV briefly on turn-off: ...
-1
votes
2answers
90 views

Motor required for lifting and lowering an awning bar

I believe Electrical Engineering is the best place to ask this question since it concerns engineering and electrical components. I am trying to design a simple system (like a mini garage) that ...
0
votes
3answers
114 views

Reversing polarity of motor with timer

I have a timer that allows me to preset times and run a motor for a predetermined amount of seconds. I need this to reverse polarity as soon as this predetermined time has expired. The timer is a ...
0
votes
1answer
62 views

DC- DC converters

Is it possible to get a DC DC converter which the output voltage varies proportionally to the input voltage? ie 14V in 28V out, 13.4V in 26.8V out. To add some context I wish to charge a 24V battery ...
1
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1answer
93 views

What happens if we run 415V 3 phase motor running on full load on to a 240V 3 phase supply?

I have a 415V 3 phase motor, but during emergency situation a 110V DC to 220VAC 3 Phase inverter comes into place. What will be the effects on the motor
0
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2answers
84 views

Washing Machine Motor [closed]

How does a washing machine motor changes its direction after one cycle? I have the basic idea that a switch has to do something with it but want to know what exactly happens and how.
0
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1answer
56 views

Fan Control using Motor Driver, looking for suitable solutions

I want to control the speed of a fan (which is a 2-phase brushless DC motor). I am currently using a suitable power supply to run the fans. My source is a Data Acquisition device that outputs up to ...
0
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1answer
52 views

Shaded Pole motor - change RPM by relative change to windings

I've got a small shaded pole motor (C-type) that I'm cannibalizing for use in a project, but the current RPM is too high. I don't want to spend the effort to build a micro-controller to run it. Is ...
0
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1answer
42 views

How Number of commutator segments,air gap between the segments of brush dc motor affect on performance of DC motor..?

plese help me about how Number of commutator segments,air gap between the commutator segments of brush dc motor affect on performance of DC motor..?? now if we we change the number of commutator ...
0
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0answers
62 views

DC Vibration motor issues

I have a simple DC (toy) motor which I'd like to use as a vibration motor for my project. The motor is controlled with an Arduino, but powered from a separate 5V voltage source (using an 2N3904 NPN ...