New Current

There is pulsed DC and other various types of pulse-width-modulated currents:

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

DC (Direct current) and AC (Alternating current) are the only types of system used in electrical power.

DC – Electron flows (or tends to flow) in only one direction

AC - Electron flows (or tends to flow) in both direction (alternating nature)

- MS

Exactly right ! GA to you.

To belabour a point to the point of boredom, electrons move from -ve to +ve, which, being -ve, make the Current go from +ve to -ve. Clear?

To belabour a point to the point of boredom, electrons move from -ve to +ve, which, being -ve, make the Current go from +ve to -ve. Clear?

As mud

Just try explaining it to your average student!

Currently it is so. Uni-polar magnetic pulse will unhinge it all.

Sick guy......

GA

We do deal with some unusual kinds of current, in the sense that the current does not consist of a sea of electrons in a conductor following Ohm's law to move and create current. Some examples of special types of current are, holes in a semiconductor, avalanche electrons, chemical ions moving in a fluid, ions moving through pores and hence across membranes in a biological cell, depolarization along a neuron, displacement charge, and on and on. And once we bring changing magnetic fields into the picture, well.

If you want to restrict yourself to conventional current like AC and DC, what about a brief pulse, like a lightning strike, I wouldn't call that AC or DC exactly. It's very intense, doesn't have equal positive and negative parts like AC, and it certainly isn't DC.

Thanks for all answers. So conclusion is there is no way/chance/idea for a new foam of electricity.

...or even "a new form of electricity."

What about EDDY CURRENT. From the name it is obviously of unpredictable value and could be ac or dc. It is a very important consideration across all aspects of engineering - ignore it's effects at your peril!

Yes.

An interesting thing about all these forms of current, is that with the right tools one can "convert" or see the current as a conventional current in common circuitry. For example, chemical ion flow is not a current in the conventional sense, but with the right electrode, one can measure this as a current.

This is what happens with a patch-clamp amplifier measuring currents across a membrane, "currents" through pores that pass specific ions. In some cases these pores must be enabled, or opened, by one or more other specific ions attaching to the inside terminal of the pore.

All of these ions, remember, are single chemical atoms or molecules, and are not per-se the electron flow that we call current. But if we de-ionize them, by supplying or removing an electron, now by measuring the flow of these electrons we can measure the ion flow. It's conventional to describe the ion flow through the membrane as a current, and measure it in pA or nA, etc.

Very interesting, to say the least. If I ever get into trouble with currents flowing, and I will, I'll be locking forward to a reply from you. Wish you were here, Ky.

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