PD or Iota for my upgrade?
I'm thinking about a converter and battery upgrade. The batteries will be wet cell lead acid 6 volt Possible T-105s or the 230AH, EGC2 from Sam's club. I'll probably go for four. (Does nayone have...
Forum Discussion
KendallP wrote:
These converters have been debated for years.
Yes, and the debates have been very helpful. I have a full set of photos of the PD9280 circuit board, top and bottom and I've been working through the components - matching them to the patents and figuring out what's the same and what's changed.
I've located a few points in the circuit where I can tweak the output voltage, if I want, by adding a component or two. That's what the pendant does (or more accurately, the pendant tells the microcontroller on the board to do - the pendant is just a switch and an LED).
I'd like to build the real time streaming output circuit for the TriMetric so I can do charge tests without having to be there writing down numbers.
Then I'd like to confirm for myself whether there's any difference between a resistive load and a battery. I'd like to check teh AC voltage dependence of the PD.
Finally, if I see anything I don't like about the PD performance I'm getting, I'd like to find out why and consider tweaking the circuit. A higher output voltage to 14.6 or 14.8 should be pretty simple. I'd sort of like to add temperature compensation, and - if I think it's necessary - remote battery voltage monitoring.
So far, I'm pretty happy with the PD9280 performance. With 3' short 1/0 cables I'm seeing 80 amps when the battery will accept that, so many of these tests/changes are going to be long term projects. We'll be going on a 3+ week vacation in September, and I'm in the middle of a few other projects for the DW. It's amazing what "improvements" she can want in the weeks before we leave.
