what is an electric actuator for?
482229
Have you considered a DC electric linear actuator? Lots of manufactures on the web such as http://www.dcactuators.com although there are others.
742139
An energy-efficient, carbon-composite, centrifugal fan designed to direct a high flow rate of air from above to the radially outward direction driven by an electric motor.\n\nWhy do you ask?  Do you have any good referrals?
561277
MAGNET THATS POWERED BY ELECTRICITY
895254
Running an electric motor "backwards" generates electricity.
777054
The product of flow and pressure put out by the power pack is approximately the power available to do work at the remote actuators.\n\nIn a real system, piping, fittings, filters, etc. cause some pressure drop, so the actual power available is somewhat less.
1169692
Depends on what you have around the house.  Clothes Dryer is the most popular.  Muscle relaxers are intense, my girlfriend had one of those.  She could barely stop using it, it drove her so crazy.  I have heard vacuum cleaners work.  I knew a woman who loved doorknobs...I'm not going to say anymore about that.
983330
It acts as a conducter and also helps the probe slide all around.\nRachel
264474
http://electroactive-polymers.brainsip.com/ - Try this website. It contains a complete description of what you are looking for.
350185
Grinding up materials between the gears (i.e. a paper shredder)\n\nAny transfer of motion in a device which, by design, dictates that the energy exerted be moved to a different, more practical location (i.e. a series of ceiling fans connected to one another or a locking system in a safe)\n\nReinforcement and/or stablization of movement needed for accuarcy purposes or to prevent slipage/overspin (i.e. a clock or analog stopwatch).
347555
Depends also if it is muscle or fat.  The muscle can overcome the inertia & air friction.
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EFI is Electronic Fuel Injector.  Yes but what is it?  It a electronic controller that sprays fuel into the chamber and controls the air for combustion so that when you push gas, you see a quick response.  In the old days, they used carburator and there was a little "butterfly" mechanism so that when gas throttle is pushed, it opens upto take more air for combustion.  Now it was never optimal so that you could smell gas (too much and not burning fast enough).  EFIs ar enew electronically controlled and suppose to enhance fuel efficiency.  Someone with more automechanic tbrain will come and correct some views but overall this is what it is and it does.
579293
"ACT", it works great!  Not sure what the website is but you can find it.  Maybe at Officmax or Depot?
488201
Try here:\n\nhttp://en.wikipedia.org/wiki/Accelerometer
275517
- A DC brushless electromotor is mainly a step-motor with a rotor made out of permanent magnet, and a stator made out of coils (mostly 4 coils, but it depends on the type of step-motor). As this is a step-motor, it needs some kind of regulator, which is made on a little electronic board. So... a DC brushless motor is made out of 3 things: \n\n1 Electronic Circuit Board \n2 Coils \n3 Permanent Magnet \n\n- Electronic Circuit Board and Coils: \n\n- This part is doing the trick - rotating the permanent magnet. There are in most every case only 4 coils in a normal fan, grouped as 2+2. The first group (let's call them the North-South group) is connected to one electrical circuit on the electronic board. And the second - East-West - is connected to the other electrical circuit. \n\n- On the electronic circuit board is located one small device that is most responsible for this trick. It is called Hall-probe (or Hall-sonde), and its location is just under the permanent magnet. \n\n- It's used to detect the south pole of the permanent magnet. The Hall-probe regulates two different electric circuits driven by two transistors, and depending on the pole it detects, it drives the proper circuit. With this type of regulation, it is possible to create a rotating magnetic field, and rotate the permanent maget located around the coils. \n\n- A permanent magnet has two-poles - North and South. Let's look what happens when the fan is powered. \n\n- Depending on the location of the south pole, Hall-probe drives one of the circuits. So, let's say that Hall-probe is sensing the south pole. It drives one of the circuits (let's say north-south circuit). \n\n- When the north and south coils are powered, they produce the magnetic field. This field is of the same direction in both coils, but... :) the Magnet hasn't got the same direction of the magnetic field in both poles. It looks like one coil is pushing the north pole away, and on the other hand, the second coil is pulling the south pole to itself. \n\n- Now, when the magnet is moved, the south pole goes away from the Hall-probe, and as it isn't sensing it anymore, it drives the second transistor (second circuit). With that, east-west coils are turning on, doing the same job as north-south coils did before. \n\n- So, basically the trick was to produce the rotating magnetic field. And it was done very cleverly! :) As coils aren't made as a moving part, it is obvious that there are no brushes, so that's the part where the name came from - 'DC brushless'. \n\n- Permanent Magnet: \n\n- This is the mostly known part of the electromotor. I think that I don't need to explain much about it. It has two poles - north and south, and using the external magnetic field it is possible to move the magnet around. In a fan, the magnet is circuit-shaped and it rotatrd around its axis. \n-------------
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You didn't say what plc, servo, etc. but generally you get a servo control card for your PLC (sometimes called "axis module"), a servo amplifier, and a servo motor.\n\nYou place a desired position and some other parameters such as acceleration,deceleration in to registers in the PLC. The PLC card will then output a plus or minus 10 volt signal to the amplifier to move the motor. -10 volts is full speed reverse and +10 volts is full speed forward. +1 volt would be slow forward.  An encoder in the motor feeds back its position to the the servo card.\n\nThat's only one way. Several companies make stand-alone servo systems (intelligentactuator.com is one) that you either "teach" it a position or command a position and it does the rest.\n\nDepending on what you are doing, you project could be anywhere form easy to maddening.
570359
there are many application one of them is electromechanical engineering
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Dryer sheets really help to reduce static electricity oin your clothes.\nthis sounds silly, but a flat-headed thumb tack through the inside of your shoe facing down so that the tip points down when you're standing up helps with build up when you walk.\nGetting your car properly grounded helps with getting shocked coming out of your car (that's most popular with me)