Newbie question about electrolysis

[polypod]

Okay, i've been watching the videos and have even watched my friend create hydrogen with electrolysis, but there's something I'm just not clear on.
Using the "resonance" methods where one is sending pulses of dc current, resulting in high volts/low amps seems to be the most effective electrolysis method, but HOW MUCH ENERGY is it using compared to HOW MUCH ENERGY is being produced? Are there advantages to combusting hydrogen that makes the spent electricity worth it?
Please can someone clue me in on how the electricity spent to release the hydrogen compares to the output, either via hydrogen to electricity(with fuel cell) or via combustion?
The videos say they're using around 10 watts to produce what I see, which looks like a decent amount of hydrogen, but is it really worth it?

[Aaron]

electrolysis vs electrostatics

Hi Polypod,

Efficiency would depend on the cell itself.

The one technology that I see people replicate over and over that beats "100% efficiency" is water fuel cell technology using pulsed DC. There is a lot of potential sitting in the water itself that is freed up so the energy isn't coming from nowhere.

Faraday's Law of Electrolysis says you can only get so much freed up gas from water from a certain input. Pulsed DC beats this quite often.

Pulsed DC isn't electrolysis... it is part electrolysis and part high voltage electrostatic separation of water (build high voltage at 2 plates) and it pulls the water molecule apart like tug of war. So actually Faraday's law doesn't even apply since that is really describing gas output based on current. At the far end, there is pure electrostatic separation of water with virtually no current at all.