Does an a/c motor need a capacitor?
969269
Whether or not a motor needs a capacitor depends on the type of motor. There are at least 5 or 6 different types of single phase motor, some requiring capacitors, some not (pf correction aside).\n\nIt is likely that the device wired to the motor in the dishwasher is required where ever you use it. It is also usual for start capacitors to be mounted on the side of the motor but may not always be the case. A capacitor is normally cylindrical and will have a value in micro farad.\n\nTake a look at the link below and see if any of the options on it resemble what you have.\nhttp://www.tcf.com/TCFBlower/pdfs/engr_data/ED1100.pdf\n\nThey don't mention another type that is often used in domestic appliances but is clear to identify by the fact it has brushes and commutator, this type would not normally need any separate control\n\nI have even found a dc motor in a standard washing machine, obviously a dc motor requires some other circuitry to use on the mains. I don't know how common this would be to find since I don't take apart too many domestic appliances.
470470
I'd like to know exactly what you're trying to do. Using the wrong type of capacitor or one with the wrong values could explode and burn. I'm talking about a pretty violent explosion at 110 VAC!  A Snubber will not work because that is now what they are for. A snubber is used on the gate of SCRs to prevent false retriggering especially on high power circuits. What you need is a Thermistor. This is a flat round device with two wires coming out of the edge. The thermistor will be put in series between the power switch and the capacitor. At normal room temperatures the thermistor might have about 50 Ohms of resistance. When it warms up, (almost instantly), the resistance drops to about zero. This action limits and controls the initial power surge into the capacitor when the switch is thrown thereby preventing damage to the switch. You need to know the voltage and current load to select the right thermistor otherwise it becomes smoke.\n\nPlese use caution: Capacitors can store huge amounts of power and will COMPLETELY DISCHARGE IMMEDIATELY.\n\nA large capacitor, when shorted out, can blow a 1/4 inch screwdriver in half! Sounds cool but the missing part is burning molten metal flying at you! Please be Careful!
492687
Most house circuits are rated at 15 amps and the units you have found that list 115 volts, 15 amps are likely designed for such circuits.  That said, you must consider the total amps of other loads on the same circuit which may serve several other wall outlets, etc.  It is not a good idea to run other major units such as TV's or refrigerators on the same circuit serving your air conditioner.  Perhaps you can share the circuit with a clock or small lamp.  The air conditioner may draw maximum amps only during startup of the compressor (you can hear it groan).  If the circuit trips, shed other loads.  Avoid using extension chords for the air conditioner (even heavy duty chords increase voltage drop at the plugs).  One neighbor discovered that his house voltage was often lower than it should be and the power company added a booster for him.  Low voltage draws more current (amps).  A qualified electrician may be able to upgrade your circuit to 20 amps, depending on the house wiring, to avoid trips.  Good luck.
174043
of course you can, provided you are willing to withstand a little noise while it works.\n\nI run a ceiling fan on a inverter, when the power is off.\n\nBut your switch may not work, as the waveform will change, so the formfactor, nad the motor will not work as it works in mains.
810481
First make sure the capacitor is discharged.( Connect a large screwdriver across the terminals of the capacitor).\nUsing an analog ohmmeter set to the 100K or 1000K scale,connect its leads across the capacitor, the ohmmeter needle should make a fast movement upscale and, after a very short time, should start moving slowly downscale toward the "0" value.This shows a good capacitor.Hope this help.
905984
Not just any A/C motor will.\n\nCurrent is generated by ,,"Waving a MAGNET past a COIL"\n\nUsing a NON-Magnet produces nothing.\n\nMost A/C motors do not have permanent magnets.\n\nA/C Motor's "magnetism" is typically created by the Supply Current---Electromagnetism\n\nA/C motors can be converted to generate,,but it's not so simple as just spinning the shaft of a DC motor or any permanent magnet motor.\n\nThere's stuff all over the net which explains what type A/C motor is easiest/best to convert,,and what's required.\n\nhttp://users.aber.ac.uk/iri/WIND/TECH/MISC/MotorsAsGenerators.html\n\nhttp://www.otherpower.com/otherpower_wind_alternators.html
297080
Not sure I understand your question, but I think you could just parrelel it with your existing fan, instead of taking it off of the circuit board.  That is what I did when I added a duct booster fan to a long heat run in my house.  Those just have a fractional horsepower induction motor on them, so they dont take much electricity.
849597
Both inductors and capacitors store energy, in the form of magnetic or electric fields, respectively, so they have some possibility of discharging that energy in a dangerous way. Shorting out a large capacitor, for example, would produce a large current. Overheating an inductor (too much current) might cause the coil to fail, and then the magnetic field decay would produce a voltage spike I think. I would assume the risks with small components are quite small.
126697
U have the best answer from howstuffworks.com. \nAbout the circuit it’s better buy a cheep hair dryer from the market and disassemble it,  have look at it. For the exact description of the hair dryer and it inner circuit’s values  \nCircuit on the PCB board may also depend on the manufacture also \n\n\nIn general i t contains an AC power code which is attached to a  switch for switching it ON and OFF and also contains a  capacitor and transistors to step down the AC power of 220V or 110 V to the capacity of the motor and the heating coil, so the can be shared by the heating coil in front and the motor placed at the back of hair dryer…
533546
You need two of those as fans. Connect them in series.\n\nOr...\n\nIf you don't have two of it, get an appliance which has the same rating and connect them in series.\n\nOr...\n\nPlug it to a voltage half its rating.
505914
westinghouse, General Electric,are the best motors to have,if you're replacing a motor take your old one to a distributor to match it up shaft and coupling.will it be a ran at intervals or 24 hours? be sure to check the amps to make sure it doesn't overseed what you're repacing.use the yellow pages in your phone book to locate a dealer near you...you can buy a cheaper motor like an appco but it won't give you the reliable service like Westinghouse or Ge brand make sure you buy one that's designed for your application and if it's going to be an inside motor or outside motor get a sealed bearing motor if you have a choice don't use a indoor motor outside wetness could cut the life of it short.Hoped this helped you some....
842836
The best answer you can get is by going to howstuffworks.com. They have a very detailed description.\n\nBut basically, capacitors store electric energy and release it when it is needed most. A capacitor has two metal plates inside it, to hold the charge, and a material called a dielectric, which could be just about anything that is non-conductive, to keep the plates from touching each other. (I think that's what you were asking about the material between the capacitor.)\nThe one plate connected to the positive power loses electrons to the power source, and the other is connected to the negative, and gains electrons, thereby becoming electrically charged.\nA capacitor can be used to smooth out a DC voltage, supply extra power to a motor on start-up, or a large number of other things.\nBy the way, capacitance is measured in Farads, or, more commonly, micro-farads, nano-farads and pico-farads, which are very small parts of a farad. 10 to the power of -6, -9, and -12, respectively.
292834
Sure, it's called a Non-Polarized Capacitor. Available at any electronics shop.
977381
Can you get your hands on a Flux Capacitor?
831976
Yes, you'll need a filter to get rid of the ripple. The voltage will be all in one polarity but will go from some peak to zero volts. You'll need a minimum of a capacitor in there if you want something close to a DC voltage.
511307
well you need the power factor as well, From O/P KW to I/P KW by I/P KW = O/P KW / Efficiency; I/P KVA = I/P KW / power factor; I/P Current = I/P KVA / (V3 x 480); V3 is a 3 phase motor is used. so simple.
178800
To make a motor you need 28 guage copper wire that will have a dark tinted laquer on it. You cannot see it except it is usually darker than copper. In other words you can sand it off when you need to solder it or make a connection. You can buy this wire at radio shack I think.