i got this one
https://produto.mercadolivre.com.br/MLB-1283333761-tda8954-210wx2-hifi-amplificador-digital-de-alta-potncia-du-_JM#position=12&type=item&tracking_id=155c2ae3-2b7c-4ad5-9cc8-03e58228ca87 for now , it take a few days to arrive..
my plan is to try oscillating two cells like i explained.. and use their potential agains each other to generate the dc current and gas...
i will use two step down isolating transformers... the amplifier has the amplitude control already build in... 200 w per channel at 8ohm load with 40v i guess... so it can give 5 amps out
not sure if it will be enough.. driving in series is not as simple as is in parallel.. in series you have to deal with the current inline...
in series z goes to zero while in parallel z goes up in resonance..
but in parallel we cannot say if the resoance is electrical or ionic... applying voltage to the capacitor having virtually no inductance would be the desirable situation to detect the resonance... i guess a resistor bridge is what i will use.. to limit the voltage being applied by the supply in the milivolt range to the cell
for this a resistor may be used in parallel with the cell and or another resistor(s) in series... this will limit the voltage applied to the cell
lets say they primary has a 100uh it would be 3,14 ohm at 5khz for example however if the secondary has a short condition it will go even lower and it can damage the amplifier..
so i will try to use series and parallel resistor arrangement to keep the resistance to a minimum predetermined value at the input!...