I'm way over my head with this and need a poke in the right direction.
I'm building a small hobby LiPo charger (I'm aware of the risks with a LiPo battery packs regarding usage, charging and discharging). And I figured, why not build in a
>4.1v dumper circuit that grounds out any voltage above 4.1v but still feeds the 4.1v through the rest of the circuit.
I tried to do this with a transistor, hoping I could utilize a gate voltage of ~4.1v and drain the source. This would (obviously?) "break" the monitor output to the right seeing as there's less resistance to ground through the transistor, thus cutting off the monitor? Even that I would be fine with. But running a simulator (NI Multisim) I'm getting a weird voltage combination instead of a over-voltage dump.
This is the monitoring part in the LiPo charger, where each Vs# is the individual cell-stack in the LiPo (5 Series LiPo pack in the example).
How can I feed excessive voltage to ground, but still feed 0-4.1v to the monitor gate to the right?
My end goal is also to combine all these voltage monitoring gates into 1 serial/digital mechanism so that I can feed the 5 voltages to a single Arduino port, would this be possible in any way shape or form?