Quote:
|
Originally Posted by GriffinRU
Nice info, Brian!
At what freq. ESC running do you know? Also, is it difficult to measure or identify series resistor (in FET's gate) value? I think I have a clue why both of them have problems at higher voltages.
Meanwhile looks good on paper, but input capacitance a little bit high.
|
No, I don't know the resistor value nor the frequency. As it is, I could barely make out the number because just the top of the FET was peeking out. Judging by the compact cluster of FETs on the power board and the number of connections between the two boards, the gate resistors are probably on the "brains" board - and there's no way I was gonna risk a brand new ESC by unsoldering the two PCBs apart - especially since they are multi-layer PCBs. :) It would be nice though if someone did and took some very hi-res pics of all sides of all PCBs. Maybe someone who has a bunch of these things and one or two are questionable anyway *cough*glassdoctor*cough* ?
I just thought it was quite interesting to note that the Quark and the MM use the same FETs. So, any "issue" specific to one ESC is solely due to programming, and possibly a choice in support components.