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ZS1100A : IOT Power Meter
In General Discussions
Julian Higginson
Jun 17, 2020
an exponential function would make the most sense to me, but I also appreciate that's a lot harder to do. Identifying critical features and finalising their parameters for a product is always a tricky thing... this is why I was just asking what the capabilities were rather than trying to demand new features. To be honest, the area where I'm more concerned with output impedance is smaller batteries like the CR2032. The resistance you'll see from big batteries isn't usually going to be a limiting factor for pretty much anything I want to do. (And depending on what you're actually doing here to realise this feature, you might find the heat dissipation in an emulation resistor to be a big problem even for low resistances once the supply is pushing its current limits) But that said - I'm more than capable of adjusting whatever you ship to suit my usage if it's possible... particularly if it's supported and encouraged. :-) And even if I can't modify the unit itself, I can run the supply to a basic open load output level at whatever state of charge I want to investigate, I can always just put a resistor inline with my DUT anyway... the most I'd be missing there is recording the voltage drop in the application and being able to see it change over sustained end of life discharge. But this kind of edge behaviour is something that's easy enough to investigate for a set charge state. Another option, is if you had an API to allow integration of your application with other software, then it would be easy enough for me to make my own digitally controllable resistance to suit myself, hook it up by its own USB port, then write a really simple python program that just read the battery state of discharge from your application, and drive the impedance from there. So many possibilities really. Maybe better not to risk too much right now.... Whatever you come up with, my order is placed, and I'm looking forward to having this massive improvement over the nordic power profiler that I've been using most recently
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Julian Higginson
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