I suspect I'm boring you all with all this repetition. But I need to make this point as poyntedly clear as possible. To anyone who wishes to simulate that waveform - I propose that it may be achieved if you assume the following circuit.
Two rechargeable batteries are in parallel. A resistor with a small associated inductance is in series with the drain of battery one - with a switch and with a positively biased diode where the cathode is against the positive terminal of battery 2.
A second rail leads from the positive of battery 2. A resistor with a small associated inductance is also placed in series with the drain of battery 2 - with a switch and with a positively biased diode where the cathode is against the positive terminal of battery 1.
The switches work in antiphase that only one battery can deliver energy at any one time. You can use a solid state MOSFET type with a body diode driven by a 555 or by a functions generator. I think you'd need one switch for each rail - but have no idea how you determine the 'on' 'off' time of them both. Hopefully you guys will know.
A common rail links the negative of both batteries. A shunt resistor is in series with both negative rails in order to determine rate of current flow.
I am not sure what is required to ensure that both batteries sustain a different pd to each other. I'm afraid you guys will need to sort that out.
The switches work in antiphase. If the battery 1 is closed, then battery 2 is open. And when battery 2 is closed battery 1 is open.
I'm reasonably satisfied that the waveform across either battery and the shunt resistor will correspond to the this one where the two waveforms are in antiphase to each other
If so, then I'd modestly propose that our own circuit seems to indicate that there's an alternate energy supply source.
It seems I've confused everyone. Abject apologies. The circuit described here is only theorised. I've never built it. Our circuit is substantially the same as it's ever been. Here I've proposed that this be tested only to see if a second supply will then generate the waveforms that we're getting. I thought it would be an articulate means of proving that our resistor/element is also an energy supply source. That speaks to the 'thinking' which is my best euphemism for 'thesis'. Apologies for the mix up. Clearly my writing is worse than ever I realised.
What I'm hoping Poynty - is that the waveforms will now move in antiphase. It'll be an interesting study.