Q:Why do AC supplied electric tools commonly have a brushed motor instead of an induction motor?

DC brush motors are typically more efficient for the package they are in. An even more efficient motor would be brushless...but that makes the cost prohibitive. Induction motors will have to be a lot bigger to in order to provide the same power as a DC motor. Plus you have the added benefit of the motor being reversible, and being variable speed. When my company bought these motors in large quantities, they only cost like 2-4 dollars from China or Taiwan, depending on the model. You will also see a lot of other products supplied with AC power and using a Brush motor. Look at hair dryers, electric shavers, mixers, printers and all sorts of other things. Believe it or not...they can be made very cheap, if you buy enough of the like a large company would normally buy. And if material costs on copper are kept low, it's the perfect solution for a product that is fed AC, especially if it's only designe for a few years of life.

Q:not asking for a inverter

Err, no, it's not all electricity - there are lots of different types of electricity - or perhaps I should say electrical currents, to be more precise. You have probably heard of the abbreviations A.C. and D.C. used in connection with electricity. They stand for alternating current and direct current. The former changes its flow direction at a rate of between 50 and 60 times per second (depending where you live in the world). The latter always sends the current 'one way' That's why you cannot run A.C. only devices from a D.C source. Moreover, trying to do it is highly likely to damage the device (at best); cause a serious fire (at worst) plus the possibility of an electrical shock, if the insulation fails due to the excessive heat being generated within the device. .

Q:how does a synchronous ac motor work? please help!!!

A okorder /

Q:Here is a hair dryer i was going to buy from argos but it says it has an AC motor which most of the others don't have, is this a good thing to get?http://www.argos .uk/static/Product/partNumber/4429890/c_1/1%7Ccategory_root%7CHealth+and+personal+care%7C10199659/c_2/2%7Ccat_10199659%7CHair+care%7C10199687/c_3/3%7Ccat_10199687%7CHair+dryers%7C10199692.htm

AC is alternating current, this means it runs on the power from your wall outlet.They all use ac motors, it's just such a standard thing most people wouldn't even mention it. It's like saying your car runs on a gas motor. True, but most of them do.

Q:I am looking for ideas on AC electric cars. i have seen the kits that use an AC motor and an inverter unit to convert the battery power for use in the motor. I am wondering if there is any advantage to using a VFD and an appropriate size generator? I know locomotives use the motor/generator set up with good efficiency. if i wanted to use a 20hp induction motor i wonder how i would pick a VFD and a generator so as to make a reliable set up? thoughts?

The Toyota Prius uses an AC motor Nimh batteries and a 4 cylinder petrol motor. It has all the control circuitry for regenerative braking, etc already developed. It has no provision to charge the battery from teh household supply. All power comes from the petrol motor. There are 3 models shown at the site below Electric Motor Operating Voltage 1997, 288V 2000, 273V 2003, 500V Power 1997, 40hp 2000, 44hp 2003, 67hp

Q:What is ac servo motor?

its a vacuum canister with a diaphragm inside it, the vehicles vacuum pulls the diaphragm back. usually the diaphragm is connected to something that moves, like a door in the heater or ac system or even an arm on a heater control valve or on the cruse control system that pulls the throttle back and holds it there. the old corvettes has this type system to open and close the headlights. other vehicles had the same type lights, mercury and olds. this system may be called something else in different areas.

Q:What is the limitation of a three phase AC induction motor?

speed control

Q:Is it possible to have an AC current applied to a DC motor ? How about an AC motor with DC current? how is this done?

AC voltage to DC motor. the motor will just vibrate back and forth and not rotate. It may burn out if the voltage is too high. DC voltage to AC motor, the motor will move to one phase and then draw too much current and get hot or burn out. There is a type of motor called a universal motor that can run on AC or DC. It is like a DC motor, but the field winding is switched by the commutator just like the main winding.

Q:What are the direct and alternating current motors used in daily life?

Friends, DC motors have toy motors, toy cars, toy planes, razors, rechargeable power tools, and in short, all batteries or batteries are DC motors. AC motor home pulverizer, threshing machine, ragweed machine, milling machine, water pump, submersible pump, booster pump, blower, electric fan, compressor, grinding machine and so on the use of electricity directly to work is AC motor.

Q:i salvaged a 1.6kw motor from a vacuum cleaner-wishing to make it into a blower but i want to use the impeller as a propeller- i can do this by changing the running direction of the motorhowever i do not know how to do this-there are two wires leading to the motor brown and blue these wires are also connected to a capacitor in Parallel they lead straight from the plugi have tried disconnecting the capacitor to see if i can hand start the motor in the opposite direction-however even when the capacitor is disconnected the motor still runs in the same direction there are no more wires coming out of the motor and the 2 brushes are connected to the field wires(the electromagnets around the armature)- can the direction of the motor be changed

Universal motors are usually series connected, meaning the armature and field are in series. You have to reverse the connections ro one of them, the armature or the field. The wiring will look like supply active, field in, field out, brush in (to armature), brush out, supply return. The capacitor is a electrical noise suppressor, just connected across the supply, or sometimes across the brushes. If it is shunt wound as you seem to describe (meaning the field is across the supply and so is the armature) then the solution is still the same, reverse one of them.