An electrical actuator converting electrical energy into rotational motion.

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20 views

Linear (non-stepper) motor control with stm32f4

I have a linear motor equipped with a sensor, such as is used in the printer. My task is to set the desired position with two switches, and with the third switch to drive off the motor in this ...
0
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0answers
19 views

H Bridge Driver for Peltier Control [on hold]

I am using L6206 Full Bridge Driver for peltier control, but this IC doesn't have in-built OCP, Short circuit protection. L6203 has max peak rating of 5A and in my application, I need 2.5A. I come ...
0
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0answers
37 views

How to repair a CD/DVD Drive stepper motor with broken foil/tab [on hold]

I'm trying to salvage CD/DVD drive stepper motors. I soldered wires into the tiny PCB tab that comes over the coil of the motors but I used solid wires which bent and detached the foil from the motor ...
0
votes
0answers
15 views

Sevcon GEN4 SIZE 6, ME1304 coonfiguration/error [on hold]

This site was recommened to me by a friend so it's my first time using it. We are working on a group project, we have ME1304 software and we are trying to use it with a 72/80V size 6 Sevcon controller....
0
votes
2answers
92 views

What will happen if I connected 3amps adapter to motor that's need only 2.1amps are that will burning the motor?

I have 3amps power supply and the motor just need 2.1amps so if I connected they together are that will destroying the motor ?
1
vote
1answer
35 views

Control an inductive load with VCO

I am trying to tune this circuit, dimensioning the values of resistors Ra,Rb and the capacitor C... The circuit work in this way: a voltage Vin regulates the current flowing in the inductor, via the ...
0
votes
1answer
43 views

Help wiring DC motor

first post here. I'm wiring a DC motor and horn that will go into a small boat I built. I would like to get some help to see if I'm doing this correctly. -DC motor hooked to a 12v battery (Max draw ...
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3answers
68 views

Power a 12 volt water pump from a 110 watt solar PV panel

I have a 12 volt DC 9 amp water pump that I would like to power from a 110 watt 12 volt (17.2 volt at peak) 6.4 amp solar PV panel. I only want to run the pump when the sun is out, it's circulating ...
1
vote
1answer
48 views

High current motor control

When designing for relatively high currents, e.g. 6-10A, what is the standard practice for motor control? Is it to construct an H-bridge out of discrete components, to use integrated half bridges, or ...
1
vote
1answer
53 views

How to estimate the settling time of the rotor of a stepper motor?

I'm trying to estimate how long I need my stepper's pulses to be to ensure I don't miss steps and assess how big the vibrations will be because of the ringing (i.e. how fast it can be, considering a ...
0
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2answers
62 views

What current rating does my kickback diode need to have?

This seems like it should have been asked before, but I can't find anything. I've got a large 12v DC motor (11A startup surge, 7a running current) that I'm PWM-ing at ~20khz through a mosfet. I, ...
-3
votes
2answers
81 views

How can I learn interfacing Microcontrollers? [closed]

My study field was computer and I'm newbie in electronics. so sorry if my question is very simple or low level! I want to build a Microcontroller based board(I think it called MCU board?) and when I ...
1
vote
1answer
75 views

What kind of motor is this 14-lead beast?

I found a motor with a weared-out label (it is completely unreadable). No distingushable marks are found there, so I decided to measure it and to deduce what is could do for me. The motor isn't large,...
0
votes
0answers
57 views

Blower (Fan) Capacitor on Water Cooler

I've got a water cooler that has a centrifugal blower inside it. The blower fails to start most of the time, but I've verified that the motor works because it starts with a slight nudge. A slight ...
0
votes
1answer
47 views

What is a torque motor exactly?

Wikipedia states Torque motors are normally induction motors of toroidal construction. Their main differences from other similar motors are their wide diameters, to allow for high levels of ...
1
vote
2answers
100 views

Equalizing motors speed for balancing robot

I am currently working on a balancing robot project using Arduino Uno. I am able to get the robot to balance but one of its motor have the tendency to rotate more than the other. I am using the ...
3
votes
2answers
84 views

Can anyone give me tips on how to proceed with this triac/optocoupler/motor circuit fix?

I'm working on a Fisher Digital Vortex Mixer that has an intermittent issue in which the AC motor is energized, but no movement occurs. By rough estimate, this will occur on one of every 8 attempts. ...
0
votes
1answer
78 views

MOSFET inverter switching losses/events - 3-phase motor

To keep this simple, let's focus on one half-bridge which supplies sinusoidal current to the motor. Q1 is the high side MOSFET and Q2 is the low side MOSFET. SPWM outputs change twice per period - so ...
-3
votes
2answers
92 views

PWM vs ESC for speed control for Arduino quadcopter

I'm from a computer programming background, but I'm interested in combining hardware with software, so I'm playing around with Arduino. Currently going through things on things needed to build a ...
-1
votes
1answer
89 views

Frequency control of vibrator motor

I wish to generate a controllable frequency vibration on a device. The vibration frequency then has to be measured and filtered. For this purpose, I am using a vibrator motor as shown. Now, i wish ...
4
votes
5answers
884 views

Detecting a wire break

I'm trying to design a circuit where it is essentially a motor controlled by a microcontroller with some feedback. The motor will have its own isolated power supply and the actual on/off switch will ...
1
vote
1answer
64 views

Is the resistance in a DC Motor constant if the voltage is?

Is resistance in a DC motor constant if both the load and voltage are constant as well?
0
votes
1answer
37 views

Dahlander winding: Does the voltage rating change between connections?

From my understanding, "normal" motors in delta/wye connection, have rated interphase voltage of 220V in delta, 380V in wye. But how about Dahlander motors? These are motors that are built to achieve ...
0
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0answers
22 views

How to implement a BLDC for variable torque in its phase (InstaSPIN, TI)

By chance I read this patented method to control the rotor pitch without a swash plate usually a helicopter, by adding two parallel hinges on each blade root. When add torque to spin it the pitch ...
0
votes
1answer
115 views

Help With My Motor Controller Circuit Diagram

I'm a novice when it comes to electrical engineering, primary since I'm a programmer. However, I am trying to make a drone for fun and I made a really(REALLY) basic motor controller with some NPN ...
0
votes
3answers
54 views

brushed motor torque and efficiency? [closed]

What causes the rpm difference between peak brushed motor torque and peak brushed motor efficiency? source: http://members.toast.net/joerger/AskAaron/motors.html page 15 of this brushed & ...
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votes
0answers
51 views

DC motor not working

My circuit is not working as expected. Only one motor is working. Every element is well soldered and well connected except one of the resistors and replaced it with a different resistance. So does it ...
-2
votes
4answers
106 views

Motor control using potentiometer characteristics

I am trying to control a dc motor using potentiometer(armature control). Increase in voltage leads to increase in speed of motor. Even though this seems in accordance with general understanding, but i ...
0
votes
1answer
23 views

How do I determine expected harmonic frequencies and corresponding amplitudes in a case of synchronous machine?

1)find harmonic frequencies which source in synchronous machine in a) fault, and b) fault-free operation conditions, in steady state mode. 2) and find how harmonics are depended on power factor, load ...
-1
votes
1answer
54 views

How to power a 150W with rechargable bateries?

I would like to build a gocart using a 150W 24V DC motor. To power it I would like to build a battery pack using 2Ah rechargeable batteries. The motor will run about 2 hours at 50% capacity (the ...
0
votes
1answer
71 views

If a load is placed onto a DC motor, will the current increase? [duplicate]

When a load, such as a weight on string, is placed into a motors axle, will this cause the current to increase?
0
votes
1answer
52 views

Why do VR motors like sinusoidal current?

I have a question regarding powering electrical motors, variable reluctance motors to be more precise (ie. Stepper motors). This kind of motor, in a perfect situation would like to be powered with ...
0
votes
1answer
72 views

Using an AC drill motor with DC?

I have this motor from drill that is powered from AC. Is possible to use the motor with DC current?
0
votes
1answer
45 views

What causes servos to get damaged from high voltage?

I have 6 volt continuous servos. I needed to run them, but had no 6 volt power source nearby so I tried using a 9 volt 280mah rechargeable battery. The motor made weird sounds, but didn't work? I ...
4
votes
4answers
123 views

Methods for converting PWM to +/- 10v Signal

Suppose we have a PWM signal which controls the speed of a motor and a digital pin which specifies which direction a motor is travelling in, how can we convert these signals into 1 +/- 10V signal ...
0
votes
3answers
67 views

Trying to make an AC 3 phase motor run as smooth as possible at low speeds.

Is there a benefit in smoothness of rotation by increasing the outer rotor magnetic poles? Is there a rule of thumb for a 24 slot core vs number of magnetic poles?
0
votes
2answers
66 views

What does a motor driver do?

EDIT: I understand now, but with a microcontroller, why can't I just connect the data pin of the microcontroller to the data pin on the servo and the power form a battery bank to the power on the ...
2
votes
3answers
598 views

Can an electric motor create torque in a direction opposite to the current axle's spin?

Let's imagine a wheel spinning clockwise. There's an electric motor on the axle, and we want to spin the wheel counterclockwise. Can we just switch on the motor and it will work? I want it to slow ...
0
votes
0answers
26 views

Controll Motor-DC using PWM in Proteus and MikroC for PIC

I am beginner (10 days) in Proteus and Mikroc, but i prefer to learn and this is the reason for my post. I build a project using PIC16F917 and Motor-DC with L298 driver. I command motor to start ...
2
votes
2answers
67 views

3.3V input to 5V output for motor control

I wanted to connect my DC motor to raspberry PI and control it with PWM pin. Problem is that gpio pins are 3.3V in PI and I have pololu 10:1 DC motor which I would like to run on 5V(to make it faster)....
0
votes
2answers
73 views

From PWM Output to Large Motor Control

This question stems from my own curiosity, so forgive any vagueness. Imagine the following scenario: We have a MCU which outputs a PWM signal to control a motor's speed and direction. We ultimately ...
0
votes
1answer
40 views

Electric motors with both stater and rotor as electromagnets [closed]

I am totally new to the Electrical area. I wanted to do a project on Electric car which needs an Electric motor which is highly powerful and efficient. Are there any motors which have both stater and ...
0
votes
3answers
68 views

Converting a 120V universal motor to run on 240V

Is it as simple as rewinding the field coils with twice the number of turns and wire half the cross-sectional area of the original? or would the armature coils also need to be rewound as well? The ...
1
vote
4answers
84 views

DC motor causing noise on the power line

I've been building a circuit where I'm controlling a motor using a bluetooth module + phone. I've been having some problems, which mostly are fixed (see topic: previous topic). The main problem I'm ...
0
votes
1answer
77 views

How to use arduino nano to switch an 230V AC motor on/off?

I want to switch on and off an 230V AC motor with a relay what is controlled by an arduino nano. The on time and off time would be able to set by a 3-position slider switch. So would be 3 different ...
-1
votes
2answers
65 views

DC motor vs Stepper motor vs Continuous servo - Which one should I use? [closed]

I'm about to build a robot arm (trust me, I've already got most of it down), but I don't know which type of motor to use. From what I understand, DC motors do the same thing as Stepper motors but ...
-1
votes
1answer
41 views

Stepper motor driver board

Hi I'm planning to make a motor driving circuit on a perfboard. I'm new to electronics so please bear with me. In the past I've wired up stepper motors and run them correctly using microcontrollers. ...
0
votes
3answers
73 views

Mosfet motor problems with bluetooth module

I'm playing around with a bluetooth module and want to control a motor using the module and a phone. I manage to control a small motor (±30 mA), but as soon as I'm connecting a bigger motor I'm ...
3
votes
2answers
76 views

Small DC motor Heating up!

I am just trying to build a small fan to keep my Mac a little cooler from outside. So I have this little Box Design I made. Now, I'm a total noob at this thing so I need beginner level help here. I've ...