Silly question about voltage and current

[Farmhand]

I know if I were switching a coil to turn it on and off which waveform I would prefer to see.

Look at all that current in the snubbed to supply shot, maybe I should do a Rosemary and claim OU on that. Circulating continuous current. hehehehe.

It's a heater ! 

..

P.S. The previous test I tried this on had a charging circuit which allowed me to make a bad probe placement which simply did not read the current through the diode back to the supply rail. Operator error. Thanks to Milehigh I know see what I think is a real result and it still back up my dislike of the practice of coil snubbing to the supply. So I am happy in two ways. I realized a mistaken result and also keep my dislike of coil snubbing for a good reason.

My apologies MilHigh, and Thanks. 

..

[forest]

Now, please FOCUS, this is very simple question : if electrons movement is the reason for electric current then why it require CLOSED CIRCUIT ? Take a charged electrolytic capacitor with HUGE energy stored (like those big ones used for power factor correction) , connect negative terminal to some place having less electrons like maybe other capacitor positive terminal), then measure how much electrons moved to that empty place by simple voltmeter. I think you would find nothing changed, capacitor still charged ,energy still there, electrons won't move easily...


Waiting for your comments

[MarkE]

Now, please FOCUS, this is very simple question : if electrons movement is the reason for electric current then why it require CLOSED CIRCUIT ? Take a charged electrolytic capacitor with HUGE energy stored (like those big ones used for power factor correction) , connect negative terminal to some place having less electrons like maybe other capacitor positive terminal), then measure how much electrons moved to that empty place by simple voltmeter. I think you would find nothing changed, capacitor still charged ,energy still there, electrons won't move easily...


Waiting for your comments

If you do not apply a potential across something, why do you expect charge to move?

[Dave45]

Very funny Dave. If I were to use a cartoon to describe your viewpoint, the head would be stuck up a different hole.

Im sorry the sarcasm was rude, just take a little time study electron flow, the direction it moves through a diode, the bemf and the direction it moves through a diode.
You will realize the bemf has an opposite polarity, this imply's that a neg pulsed coil will have a pos return and a pos pulsed coil will have a neg return.
Study ionization, the plarity of the electrodes, the ion clouds formed around the electrodes, how that relates to a pos and neg pulsed coil.

Alternating current is more that it imply's, a coil pulsed with alternating current receives a pos and neg pulse.
Check out static neutralizers and you will see how your neutralizing any extra energy you may be drawing from the ambient by powering a transformer with both legs.
Split the pos and neg so they cant neutralize each other.

[MarkE]

Im sorry the sarcasm was rude, just take a little time study electron flow, the direction it moves through a diode, the bemf and the direction it moves through a diode.
You will realize the bemf has an opposite polarity, this imply's that a neg pulsed coil will have a pos return and a pos pulsed coil will have a neg return.
Study ionization, the plarity of the electrodes, the ion clouds formed around the electrodes, how that relates to a pos and neg pulsed coil.

Alternating current is more that it imply's, a coil pulsed with alternating current receives a pos and neg pulse.
Check out static neutralizers and you will see how your neutralizing any extra energy you may be drawing from the ambient by powering a transformer with both legs.
Split the pos and neg so they cant neutralize each other.

Dave why don't you study up on things like solenoid drivers?  Low-side only, high-side only, and "X" drivers have been in the market for decades.  Variants of single sided drives using bi-voltage, single sided diode clamps, zener clamps, and simultaneous two switch switching are old hat.  If you are listening to music on any kind of computer, or portable device, the Class D amplifier that is driving your speakers or headset is switching the output up to 1 million times per second.  Class D amplfiers do not pull energy out of the ambient environment.  Engineers carefully design the PCB layout and EMI filtering so that they do not emit excessive RF into the environment.