The container is now air tight. This allowed me to start doing some electrolyser efficiency tests. By attaching a small hose between the container and a small flask containing some water I could see how fast the bubbles would form, by varying pulse width and frequencies (both the carrier signal width/frequency and also the gating signal width/frequency).
From the tests carried out so far I could not see a relationship between frequency/pulse width and the ammount of gas formed. I could only see that as the current increases, the more gas is produced (i.e.: the rate at which the bubbles appear in the water flask is greater). And the current increase depends on the pulse width alone (or not entirely - considering that the WFC behaves like a capacitor, current will also depend on the frequency).
The experiment setup, including the water flask, where the gas output goes:
The bubbles containing H2 and O2 mixed-up:
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