More negative than actual ground

[Steve Watson]

Is it possible to produce a circuit that operates at a _lower_
potential than actual ground so that electrons flow from ground into
it ... instead of the convention whereby electrons flow from a higher
potential into ground?

By "actual ground" I mean a rod physically in the ground, not a
relative ground created by dividing a positive voltage, as in a dual
rail supply.

For example, if an AC driven transformer (with a split secondary) is
wired with its center output tap to ground, does one side of the
winding draw electrons into ground and the other side draw them away?

Steve Watson

 

[Steve Watson]

Electrons flow from lowest potential to highest potential. So if a
potential is lower than ground, electrons flow from there into ground
and not from ground.

So, I have a handful of electrons ... what in circuit design is
strangely termed a "positive" potential/voltage relative to ground. If
I drop them, they are absorbed as they fall on the (more positively
charged) ground, because electrons are negatively charged and
opposites attract.

Now that those negative electrons are part of the ground potential,
how can they be extracted with a "negative" potential/voltage that is
actually more positively charged than the electrons such that the
electrons will be attracted to it?

Is that the right question?

Or, to put it another way: the negative electrons, represented by
higher voltage, are attracted to the positive ground. By what
practical method can this process be inverted?

Eg. to create a zone of electron depletion that it is more positively
charged than ground.

Steve Watson

 

[Sjouke Burry]

[email protected] (Steve Watson) wrote in @news.tpg.com.au:

So, I have a handful of electrons ... what in circuit design is
strangely termed a "positive" potential/voltage relative to ground. If
I drop them, they are absorbed as they fall on the (more positively
charged) ground, because electrons are negatively charged and
opposites attract.

Now that those negative electrons are part of the ground potential,
how can they be extracted with a "negative" potential/voltage that is
actually more positively charged than the electrons such that the
electrons will be attracted to it?

Is that the right question?

Or, to put it another way: the negative electrons, represented by
higher voltage, are attracted to the positive ground. By what
practical method can this process be inverted?

Eg. to create a zone of electron depletion that it is more positively
charged than ground.

Steve Watson

Lure them out by itty bitty positrons.

 

[Fred Abse]

Is it possible to produce a circuit that operates at a _lower_ potential
than actual ground so that electrons flow from ground into it ...
instead of the convention whereby electrons flow from a higher potential
into ground?

By "actual ground" I mean a rod physically in the ground, not a relative
ground created by dividing a positive voltage, as in a dual rail supply.

View in monospace font:


Voltage negative of ground
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GND

For example, if an AC driven transformer (with a split secondary) is
wired with its center output tap to ground, does one side of the winding
draw electrons into ground and the other side draw them away?

You *could* say that.

It's better for most purposes to forget about electrons, and think in
terms of voltages and currents.

Just remember that voltages around a closed loop add up to zero, and
currents flowing into a single point (node) also add up to zero.

 

[Martin Riddle]

Only in a "progressive" world

...Jim Thompson
--

Maybe just in New York.

Hey, I heard we are boycotting Arizona Ice Tea again.

Cheers

 

[Jamie]

Figures.

From Wikipedia:

AriZona Beverages USA (often labeled AriZona) is a producer of various
flavors of iced tea, juice cocktails and energy drinks from the United
States, based in Woodbury, New York. <<<<<<<<<<<<<<<<<<<<<<

Martin, How to you manage to stand to live in NY, when all around you
are village idiots ?

...Jim Thompson

maybe he didn't notice?

Jamie

 

[Martin Riddle]

maybe he didn't notice?

Jamie

No they are quite noticeable.
We were once mainly Republican, but that ended when Fairchild and
Grumman close up shop.
Upstate NY was always Democratic.
Nowadays, I think most of the Democrats are Generation X'ers, mostly
clueless and expect everything to be handed to them on a plate.
That shouldn't last too long tho, The 'Great Recession' might just clean
them out.

Cheers