So many questions, so little time ( I have no technical knowledge).....
Quote:
Originally Posted by BrianG
Ah, the trans cap contains voltage clamping transorbs. How much energy can the circuit safely shunt before heating up too much? Can you release specs on the transorb devices (or at least the device part number so I can look it up)? I wonder how it would perform if one were to upgrade the cap from the stock 10v 5600uF to something in the range of 35v ~1000uF (trying the keep the physical size close to the same).
Also, the cap is only rated for 10v, which limits the battery voltage to 2s or 7 cells max. Too bad there wasn't a higher voltage version, something in the 25v range for people with 3s to 5s systems.
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Adnan answers:
We use two 12 volt Trans sorbs and they are rated at 1500 Watt each (SMCJ12A). Replacing the capacitor we use (for our BL controllers) is not a good idea as we use 30 volt MOSFETS for the lowest possible RDS rating and we design with a safety margin of 2 to 1 with respect to voltage break down rating.
This is done to protect the MOSFETS from voltage spike damage especially during hard braking. The capacitor we use (5600uF) is very low ESR and high ripple current capable device that prevent high voltage spikes under heavy load conditions.
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