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Or how it can be sufficiently efficient, to make it worthwhile. The losses will be tremendous.
As I've said before (and attracted some flak :), I don't think it's true 'efficiency' that you're talking about but, rather 'effectiveness'.

As I've said, inductive coupling can be useless as a means of effectively transferring electrical energy, but nevertheless n may be very 'efficient'.
 
As I've said before (and attracted some flak :), I don't think it's true 'efficiency' that you're talking about but, rather 'effectiveness'.

No, I really meant 'losses', energy just wasted, heating the environment, the surroundings, and the vehicle chassis due to eddy currents.
 
No, I really meant 'losses', energy just wasted, heating the environment, the surroundings, and the vehicle chassis due to eddy currents.
As I keep saying, there are not necessarily any major 'losses' (wasted energy) - which, if present, would represent true 'efficiency problems'.

However a system of inductive coupling can be very ineffective (very little energy transferred, hence very 'slow') without there being appreciable 'losses' (i.e. 'poor efficiency'). In the real world, there will obviously always be some actual losses (hence less than 100%efficiency),but not necessarily very much.
 
He's strawmanning again.
I didn't understand why you said that the first time, and nor do I understand why you have repeated.

As you quoted, Harry referred to " 'losses', energy just wasted, heating the environment" - which, if it occurred, would indeed be an indicator of poor efficiency. However, as I keep saying, yet no-one seems to understand, 'ineffective' transfer of energy by (weak) inductive coupling does NOT necessarily have to be associated with such losses/wastage (i.e. poor efficiency, in the true meaning of the word).

To cite a sort-of analogy, a power source capable of providing only a few mA, but at an appropriate voltage, would be a very 'ineffective' way of charging a car battery (since it would 'take forever' to charge the battery) but that doesn't mean that it couldn't be very 'efficient'.

I'm used to people here being quite upset by the incorrect use of terminology, which is why I pointed out that people appeared to be using the words 'efficient' and 'efficiency' to refer to things other than what those words actually mean. The energy transferprocess we've been talking about may,of course, in some cases be inefficient as well as 'ineffective', but that is not necessarily the case.
 
And by the correct use it seems.
It rather seems so:)
Or inefficient but effective.
Perhaps, but that gets a little more complicated, since some people would probably say that 'effective' encompasses at least some degree of 'efficient' - i.e. a power transfer system might be 'effective' in the sense that it delivered the required amount of energy to the load, but if it were very inefficient, such that a lot of supplied power was 'wasted', rather than transferred to the load, some might well question whether it really was an 'effective' (or, at least, sensible!) way of doing things.
 

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