I haven't got my replacement psu yet, but I hope it will arrive this week.
I don't have a tracking nr, so I don't really know.
But anyway, I started building my charger.
This is basically what it will look like.
It will have a knob for adjusting voltage and current, a switch to be able to read the voltage from one psu or both in series.
I earlier tried to take voltage inside a psu for the control board (V&A), but it didn't end well..
Fried both the psu and control board. So now I plan to use this external supply.
Now to the new problem, I need about 12v for the wattmeter too.
It has a + &- for the high voltage, and the same for the low. But I wanted to be careful and measured between them.
And I find that both - are connected together
A solution is to use separate 12v supply's for the meter and control bord. I probably can fit 2 in there, but really?
2 supply's for a few mA.. I'm trying to figure out if it can be done easy with one. What if I put a diode on the - on the low side to the wattmeter? Would that be enough to protect the control board, and the psu´s on the other end of the can bus?