how do ac capacitor generators produce current?

Answer 1

It is relatively easy to devise a source (a “generator”) which produces a sinusoidally varying emf. A rotating coil in a magnetic field gives an important example; another is the sinusoidally varying potential across the inductor in an L-C oscillator, used in many situations to provide an emf for another circuit. This kind of oscillating source is called an AC (alternating current) generator. Its output is described by E = Emax sin!t .

Meters that measure the strength of sinusoidally varying voltages and currents do not
usually measure the maximum value. Instead they measure the rms (root-mean-square)
value. This is a statistical measure, defined for any varying quantity by:
Go here for the rest of the equations:
http://www.phy.duke.edu/~lee/P54/ac.pdf#search='ac%20capacitor%20generator'

here's another explanation:
The capacitor current due to an AC voltage or current source reverses direction periodically. That is, the AC current alternately charges the plates in one direction and then the other. With the exception of the instant that the current changes direction, the capacitor current is non-zero at all times during a cycle. For this reason, it is commonly said that capacitors 'pass' AC current. However, at no time do electrons actually cross between the plates, unless the dielectric breaks down or becomes excessively 'leaky' in which case it would probably malfunction, burn out, or even explode.

Since the voltage across a capacitor is the integral of the current, as shown above, with sine waves in AC or signal circuits this results in a phase difference of 90 degrees, the current leading the voltage phase angle. It can be shown that the AC voltage across the capacitor is in quadrature with the AC current through the capacitor. That is, the voltage and current are 'out-of-phase' by a quarter cycle. The amplitude of the voltage depends on the amplitude of the current divided by the product of the frequency of the current with the capacitance, C.

http://en.wikipedia.org/wiki/Capacitor

Answer 2

Generator Capacitor

Answer 3

What is an AC capacitor generator? It might be an LRC circuit.
Start with a charged capacitor (C). The charge on the plates wants to recombine. Rig things so that in order to do so, it has to travel through an inductor (L). When it passes through the inductor, it creates a magnetic field, and as it starts to peter out, the collapsing magnetic field tends draws more charge from the (neutral) capacitor plate, therefore charging it up the opposite way. At some point, the magnetic field has totally collapsed, the capacitor is charged up as much as it will be in the opposite sense, and the process then goes back the other way. The motion eventually damps out (this is what the R does), but until it does you have an alternating current.

The differential equation for such a circuit looks just like that for a swinging pendulum: the "over-withdrawal" effect is analogous to the tendency of the falling mass to keep going and swing up the opposite way. The inductor provides the current's "inertia."

Answer 4

All capacitors are AC devices. They pass AC current through a given circuit, and can also store voltage for a time.

Answer 5

they're meant to generate countless modern, yet I even ought to invite this. in the adventure that they are so tremendous why can't i bypass all the way down to the ironmongery save and purchase one as a lower back up generator for the ice storms that kills the electricity now and again?

Answer 6

I am not convinced that any of the responders actually understand the question. I certainly don't, and I'm a physicist.