An electrical actuator converting electrical energy into rotational motion.

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2answers
215 views

Increase power output of squirrel cage induction motor

I have a squirrel cage induction motor rated at 15 kW, 415 V 50 Hz, 1460 rpm. I want to increase its power above 20 kW. I am going to rewind the same motor for 3000 rpm, at 250 Hz supply frequency, ...
-1
votes
2answers
2k views

How to make a touch screen device with android OS?

I am planning to make a device which has a touch screen LCD. I have searched for solutions and i think if this device has android OS could be use for many applications. This device will be used for ...
3
votes
1answer
679 views

Choosing relay to operate water pump

Based on my research so far, I've concluded that a relatively low-cost, yet reasonably reliable way to control operation (on/off) a motorized water pump, is a well spec'd EM-relay with flyback diode. ...
2
votes
1answer
89 views

Controlling speed of motor through L293D using TLC5940NT

I am trying to control a DC motor through an L293D. Ultimately I am controlling it with an Arduino, but I am trying to use a TLC5940NT chip as an intermediary to increase the number of outputs that I ...
0
votes
1answer
33 views

PSC motor driver circut using relay

I am working on a project in which i need to connect Permanent Split Capacitor(PSC) AC motor using relays as shown in the below block diag fig 1. I want to rotate it in both CW and CCW direction. It ...
0
votes
1answer
40 views

3 Phase Motor Rectifier

I have a Turnigy Rotomax 50cc engine and I am trying to rectify it. I don't know whether it has delta or a wye winding style but I suspect that it is delta(Left Picture). This is what I have so far: ...
0
votes
1answer
46 views

DC motor spun clockwise then counter clockwise creates AC current?

I am making a generator with a DC motor but the style of turning the rotor would be clockwise and then counter-clockwise, and I would want to capture as much current as possible so I hope it could be ...
0
votes
1answer
91 views

Motor Control For Overload

I am using PIC 18F45K80 for four phase dc motor control operation. The maximum load current is 30 Amps. If it exceeds 30 Amps, I have to call stop_motor() function in my coding in order to switch off ...
0
votes
1answer
49 views

Sharing the Seeeduino LiPo with a motor controller

I'd like to use a Seeeduino to control a small DC motor to wind/unwind a thin cable which will be lifting a small door. Ideally, I'd like to use the same LiPo that's being used to power the ...
0
votes
1answer
351 views

wiring a blender motor

So I've salvaged a motor from a blender that was not in use- the only thing is I haven't got a clue how I would wire it. I want to make sure I have the correct setup, since it operates at 230V. So my ...
-1
votes
1answer
177 views

Motor Protection

I am having a control panel to operate a green house fan and pad lab. in this lab i am having, 2 fans 1 temperature sensor(PT-100) 1 humidity sensor 1 motor for water flow(2 HP) 1 motor for fogger ...
-2
votes
1answer
592 views

charge a mobile using a dynamo

I am making a project to charge a cell phone battery using a dynamo,but i don't know how to start about.also let me know about the power ratings of the dynamo to be used for charging a 3.7V,1000mA ...
2
votes
0answers
122 views

Controlling a treadmill motor

I'm recycling some spare parts of an old treadmill for a new project. I have the motor with its driver board, the elevator piston and the controller board. All works out of the box, but I need to ...
2
votes
0answers
80 views

Gear motor with encoder: minimum drivable step

I am fancying this motor http://www.pololu.com/catalog/product/2271/specs to motorize an X-Y stage. (Alternative High rpm motors with high reduction ratio and high encoder counts/rev are welcome ;) ...
2
votes
0answers
145 views

Matching mosfets - linear servo amplifier (AB)

I'm replacing a bunch of burnt mosfets in a linear amplifier for a brushless motor. 3 phases Each phase: 3 pairs of totem IRFP240 / IRFP9240 in parallell. (no R in series) My main concern is ...
1
vote
0answers
444 views

How to tell whether a motor is an AC or DC motor?

I watched a youtube video http://www.youtube.com/watch?v=hT3jJRGVdW4 The man says : by spinning the motor to see whether the output is AC or DC, then it can tell whether the motor is generating AC or ...
1
vote
0answers
99 views

Use a 2N7000 in place of 2N2222A

Here's a description of both circuits. A ring shaped magnet is mounted on a brass axle and a set of bearings. Coil A and Coil B are wound on the same core. The magnet is placed about 1/8 of an ...
1
vote
0answers
132 views

Old variable speed AC motor wiring

As a disclaimer, I have a little electronics knowledge, but I'm no expert. I've been given an old 1940's Hunter fan and I'm working on fixing it up. I took the base apart and wiring is pretty bad - ...
1
vote
0answers
208 views

Analogue Hall sensored brushless outrunner motor position control

I would like to produce a low cost high power:weight servo drive using a brushless outrunner motor, like those use in radio control planes: Some of these motors leak enough magnetic flux out the ...
1
vote
0answers
121 views

SEM Permanent Magnet DC Motor DPM 30R4 1500RPM 24VDC Output: 0-25kW & Brake

I am in the plannning stages of a project to build a pig rotiessiere. I have the above mentioned motor, but I am unsure of what type of power source is needed to run the motor and what can I do to ...
1
vote
0answers
414 views

L298N shield gives relatively low ouput voltage and current

I am using a L298N shield together with an Arduino to drive a 42mm 2 phases bipolar stepper motor. The driving voltage for the motor is 12V and the logic voltage for Arduino and the L298N shield is ...
1
vote
0answers
44 views

Why do my outputs look exactly the same for the Allegro 3901?

I am trying to capture results shown in Figure 8 of Allegro 3901 data sheet . My circuit looks like this: The channels above coresspond to the oscilloscope screen captures below: In the image ...
1
vote
0answers
370 views

How to drive dualsky ESC with arduino PWM? (Brushless motor)

I've recently received 4 Brushless motors, 4 brushless ESC's and 2 LiPo batteries. I managed to run the motors with my arduino and the servo library, but I'm not getting optimal results. I was ...
1
vote
0answers
74 views

External Accessories for VFD

I am trying to decide what external accessories I need for my VFD 7.5 HP for a 1500Watt Vibrator motor. The three options I have come up with are below. I'm using a standard 220VAC line supply from ...
0
votes
0answers
20 views

Proper motor for a fan/propeller to be used in a permanently installed sculpture

I am designing a sculpture with some moving parts and one of those parts is a rotating fan or propeller-like vane connected to a motor (it will be a light plastic part of ca. 20-25 cm. of diameter, so ...
0
votes
0answers
23 views

Help in choosing an electrical motor

As a dad to a newborn girl that calms down and falls asleep only when rocked vigorously in her crib or pram, I thought that it could be a nice idea to automate that process. I have a couple of ideas ...
0
votes
0answers
54 views

How do I find power flow and shaft torque of induction motor?

A 50Hz induction motor has a synchronous speed of 3000 RPM. The motor has 2 poles and is initially running below the synchronous speed. An external force is applied and the motor is now rotated at ...
0
votes
0answers
36 views

How to connect SINAMICS V60 driver to RaspberryPi

I have a Siemens motor with SINAMICS V60 driver (10A). Here is the Getting Started Manual (28MB PDF) . I want to connect this driver to the GPIOs of my raspberry Pi board. The purpose is to control ...
0
votes
0answers
63 views

Generating a Trapezoidal Motion Profile

I'm working on a project which involves the use of a servo motor to pull an object along a track. The servo motor will have a quadrature encoder to calculate the position. I'll probably implement this ...
0
votes
0answers
19 views

Infer the EMF amplitude of a generator from limited motor-mode data

Context: I am designing a very low speed alternator for small power devices, and I would like to select the correct motor for my application. The problem is, the cheap ones provide very little data - ...
0
votes
0answers
212 views

Control 12v motor with 5v PWM

I have 5v PWM (555 generated) and I want to control speed of a motor using it. The problem is my motor is 12v and by diving it with a 5v PWM I can't reach full speed of a 12v motor. my pwm generator ...
0
votes
0answers
89 views

Need Help in creating a driver for a 220v AC Servo Motor

I am a new to electronics and have been working on to design a Motor Drive for comonly available Serveo motors like: http://www.alibaba.com/product-gs/1580332915/servo_motor_used_in_CNC_machine.html ...
0
votes
0answers
51 views

Where can I find synchronous machine parameters to use in a PSCAD simulation?

I am trying to observe a loss of field on synchronous motors of different types and sizes. PSCAD seems to want a DQ equivalent circuit. I've Googled the problem and tried several manufacturers' ...
0
votes
0answers
40 views

Why do we use variable reluctance steppers?

AFAIK, variable reluctance steppers have non-magnetic soft iron teeth and they align themselves so as to have minimum gap I don't understand what does this line mean? How does it align itself with ...
0
votes
0answers
67 views

Which would be the best option for driving the 3/4 axis stepper motor for 3D printers?

I have researched a bit over google and reprep websites and come across different circuits/methods to drive the stepper motors. Being a student only , I have budget issues and I want it to be less ...
0
votes
0answers
95 views

Frequency Inverter LS IS5

I have been working with a IS5 frequency inverter. I'm trying to use the Sensorless Torque control, for a Wind Turbine Emulator, via an external reference. The issue is, when I turn the inverter on ...
0
votes
0answers
263 views

How to correctly use a few 28BYJ-48 with ULN2003A and one Arduino Mega?

I bought 28BYJ-48 5 Volt stepper motor with ULN2003A Darlington Array driver. I run basic Arduino examples and some code from web. But how do I use a few motors with one Arduino? It has very small ...
0
votes
0answers
140 views

Choosing the correct brake resistor for DC motor

I have a DC motor running on 24VDC rated 150W (~6,25A), how do I calculate the correct brake resistance?
0
votes
0answers
59 views

Parts List to Replace Battery Packs?

I've purchased and installed some relatively cheap motorized blinds for my apartment. After having them for about a month, the batteries are dead on 2 out of 3 sets. Each blind has a pack of 7 AA ...
-2
votes
0answers
35 views

3 Speed Motor Wiring

I have a 3 speed motor and cannot understand the diagram of wiring which is printed on it. Where should I connect the capacitor and how should it connect the motor to AC power?