Silly question about voltage and current

[MileHigh]

Cheers.

[Farmhand]

So in the mean time can it be established that the discharge from a coil is forward emf ? Not Back emf ? That would be a big step.

Cheers

[MarkE]

This is how coils behave when connected to switching circuits.

[TinselKoala]

Yes please. If we use the term "current" can we agree to stick to the established convention of the direction of "travel"? And if we are talking about charges, then let's call them charges and accept that they go the other way around the circuit. But if we are analyzing circuit behaviour from the standpoint of electromagnetism, power dissipation, and all that, we should stick with the established convention, even though we know it is "wrong".  Drive on the left side of the road if you are in Britain or Japan, please, and if you are on Earth.... current (consider "conventional" as always implied) goes from positive  to negative.

[TinselKoala]

Ok fix the mosfet orientation - the mosfet is not what we are discussing here. This is how a discussion turns into miles of senseless posts.

We are talking about the bemf of a negatively pulsed coil and its polarity not the mosfet orientation, so its wrong, I told you I took it from a schematic that was handy.

Indeed. If we get the _basics_ wrong, it is difficult to make any progress at all. Posting wrong schematics and then trying to discuss them as if they were right, or that the wrong parts don't matter, makes it very difficult for us poor hidebound folks that build and experiment. And it can really_really_ lead people to stray very far from reality if it's not nipped in the bud, so to speak.

Would you like to see some good examples of this? Just go over to
http://www.energy-shiftingparadigms.com/index.php and read the "papers" that are posted there.