Quote from: Dave45 on February 08, 2014, 11:20:23 AM
I was wondering when you would wake up  just kidding

The first pic in the series is supposed to be showing the current through the coil not the diode, I made the pics in a hurry, working on my house today.

It's the second stage that has the error... (I added a revised image as an edit to the prior message)

The second image shows the collapsing pos field moving through the diode, its pos so moves through the diode in the voltage direction, this shows us the field has a pos polarity, if the backspike had a neg polarity the diode would have to be reversed.

This is the whole reason for the freewheeling diode to reroute the backspike away from the driver, by its orientation we can see the collapsing field is pos.

Quote from: Dave45 on February 08, 2014, 12:32:12 PM
The second image shows the collapsing pos field moving through the diode, its pos so moves through the diode in the voltage direction, this shows us the field has a pos polarity, if the backspike had a neg polarity the diode would have to be reversed.

This is the whole reason for the freewheeling diode to reroute the backspike away from the driver, by its orientation we can see the collapsing field is pos.

not really; you can keep the same notation of negative current and negative current...  why confuse it with two different notations of current?
the electron motion will still be in the same direction;

If we pulse a coil and catch the bemf we get pos energy - cold current - pure voltage Iv heard it called many names but it has no use, well it can be collected in a cap and used but if we use that pos energy to pulse a coil the bemf from the pos pulse should be neg current and that we can use, besides the fact that Carlos's circuit lets the primary ring back and forth.

Its just an idea a train of thought the pos and neg cloud accumulation on the electrodes of the air purifier is what brought it on, if we want to collect energy from the ambient we have to study it.

I have most of the parts needed to try Carlos's circuit, I have to order some caps then I will give it a shot.

all the best
dave

Evil prevails when good men do nothing

try to connect the earth to the core