As we are using Induction principle for AC-AC conversion,can we use principle of  capaciotor for DC-DC  conver
485074
We convert AC-DC but why (or how) would you convert AC-AC? At the most there may be a half wave or full wave rectifier but that has nothing to do with induction. I sure can't understand your question.
926622
The CT will only work on an AC circuit so I don't see where it would make any difference.  The only thing that would is to have another phase too close and the magnetic fields might cancel each other. Since the current being measured is AC the output from the CT will also be AC and shouldn't matter on the leads.
772408
Here is a place to start but the best place is a good library. Many great books have been written by drive engineers with different approaches to old problems. http://www.joliettech.com/dc_drives_principles_of_operatrion.htm\n\nAs you probably know dual converter drives are simply 4 quadrant drives capable of controlling hauling and overhauling loads in both directions of rotation. \nThe latest technology in Thyristor drives uses what is called a 12 pulse system that creates an output the equivalent of six separate phases. It boasts operation as quiet as a 12 SCR dual converter system without the use of a ripple filter in the armature circuit. It uses a combination of 17 high power diodes and SCR's along with a multiple winding transformer in the output.
48905
There's a great article explaining thyristor operation and showing basic circuit diagrams here: http://www.ibiblio.org/obp/electricCircuits/Semi/SEMI_7.html\n\nThere was also a very good reference book called "SCR Manual Including Triacs and Other Thyristors" published by GE from the early 1960's into the late 1970's.  It's a highly prized source for many engineers, and you -may- be able to find one for sale, if you're lucky. (No, you can't have mine :-P )\n\nDo a Yahoo! search for "thyristor circuit diagram" and you'll get thousands of results. :)
712486
This is very complicated.\nMutual Induction means that the current in one circuit is getting into another circuit (and also the reverse), probably through transformers. And possibly from one wire to another nearby wire.\nThis can be a big problem in an Xray machine, if a power wire causes interference with a low voltage signal wire.  \nIf this is your problem, MOVE the WIRES APART more.
103176
You might ask another student or the teacher for help.\n\nThe specifics of making a convertor depend on exactly what she bought.\n\nLet's assume she bought 4 diodes and a capacitor.\n\nShe can use the diagram below to hook up her diodes (see link) and then simply add the capacitor across the output of the diodes, being sure to keep the plus and minus attached to the proper corner of the diode "square" arrangement.\n\nBest of Luck!
528925
Alternating current and direct current. They are not compatible.
38072
because the capacitor impedence = 1/ jwc ... for the dc current .. the frequency is equal to zero .. and w = 2(bi)f ... > w=0 .. the impedence = 1/0 = infinity ... so it's considered as an open circuit for DC
1095597
Reactance, like resistance, tells you how a capacitor responds (reacts) to a current or voltage. From the reactance, you can find the V/I relationship. It is defined as X=1/wC where w is the radian frequency and C is the capacitance of the circuit.\n\nIt will be better if you can let us know your education level and we can describe according to your need.\n\nhttp://www.kodkodkod.com/database.htm\nhttp://www.kodkodkod.com/index_files/submitquestion.htm\n\nRegards,\n\nKodKodKod Learning Consulting
97533
+12VDC, -12VDC, +5VDC, -5VDC
220789
Are you trying to convert AC to DC?  If it is, you want to use a rectifier.
1126159
"Because it lacks a separate field circuit, an induction generator cannot produce reactive power.  In fact, it consumes reactive power, and an external source of reactive power must be connected to it at all times" [1].\n\nSo you are right that you will need a three-phase capacitor bank at the output terminals (delta-connected).\n\nHow to size the capacitors?\nThat depends on a few things.  Namely what kind of loads are going to be attached to it.  I presume this is going to be an emergency generator operating alone (most induction generators are used this way nowadays).  In that case, your capacitor bank will need to account for the generator consuming reactive power and the loads consuming reactive power.\n\nSo, if you know what you are going to connect to the generator, figure up an estimate of the total reactive power of your loads.  Then estimate how much reactive power your generator consumes (not sure how to do this; maybe estimate from your 7.5kW and 9.4kVA ratings?).\n\nFinally, to size your capacitors equate the total power consumed by gen and loads to this formula:\n\nestimated_3phase_power_consumed = 3*(line-to-line_volt)^2/X\nwhere X = 1/(2*pi*freq*C)\n\nSolve for C and there you go.  My source indicates that the output voltage for an induction generator can vary quite a bit with varying inductive load, so bear that in mind and maybe oversize the caps a bit.  Also, the types of capacitors should be able to withstand AC obviously and be rated within your expected operating temp, etc, etc.\n\nGood luck.
471780
I prefer you buying one.  But there are always schematics out there that show you how to create your own inverters.  \n\nhttp://www.aaroncake.net/circuits/inverter.htm
76334
In alternating current circuits, energy storage elements such as inductance and capacitance may result in periodic reversals of the direction of energy flow. The portion of power flow that, averaged over a complete cycle of the AC waveform, results in net transfer of energy in one direction is known as real power. That portion of power flow due to stored energy, that returns to the source in each cycle, is known as reactive power.
173670
V=It/C\n\nwhere\nI is current in amps\nV is voltage in volts\nt is time constant in seconds\n\nIn an ideal capacitor, this holds true.  Theoretically, an ideal capacitor has no leakage current and no inductance.
195649
Yes. In the simplest version, a 2-pole generator, each rotation of the armature causes two reversals of the current in it. By reversing the connection between the armature and the output twice per revolution, the commutator maintains a unidirectional flow at the output. As the first answerer mentioned there can be more ripple in the output of a slipring-diode setup than that of a commutator. Although this would not be true in a 2-pole generator, most practical generators are multipole. When the armature has more poles, the commutator has more segments; when the stator has more poles the commutator will be contacting more brushes. Either way the ripple is reduced.
1050520
Think about the simpliest capacitor. It is clear that two metal plates that don't touch won't let a DC current pass, right? But the spacing is very thin so that the plate's charges can effect one another. When you first put current (even DC) to a discharged capacitor, it charges up and for a brief time it does conduct current. How long? Well it will charge to 2/3 of the total voltage in RC seconds (where R is the resistance of the circuit). So when AC current is "fast" enough, the cap is constantly in a charge/discharge state and current flows. The effective resistance (reactance) of the cap is 1/(2*pi*F*C). So the resistance goes down as the capacitance and the frequency rises.\n\nThe inductor, on the other hand is just a coil of wire. Again, it is easy to imagine that it will conduct DC. But when you first apply current (even DC) to a coil, the magnetic field will interact with the coil and produce an opposing voltage. This only occurs when the magnetic field is forming or collapsing (remember, magnetic fields that do not move do not produce electricity). So right when you change the current, the inductor will "resist" the change, but if the current doesn't change, it is just a wire. The reactance of a coil is 2*pi*F*L, so the resistance increases with frequency and inductance.\n\nNow, combining inductors and capacitors is another interesting subject, but you didn't ask about that....