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Old 07-23-2012, 06:33 PM   #5815 (permalink)
electricstorm
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I will be mating the control board and the power board either today or tomorrow. I hope to take it back to class and demonstrate it to fellow students per my instructor's request. We will be using a 12 volt lead-acid battery and a starter motor.

My question is:

For this test, do I need a pre-charge resistor before applying full power? If not, at what voltage would I need to add one and what value and wattage do you recommend? I am sure the answer is in this thread somewhere, but for the moment, it eludes me!

When a pre-charge resistor is needed, again, what value seems to work and how long do you set the pre-charge time on the controller for? I am planning to run it on a 120v DC battery pack when I install it into the vehicle.

Jim.
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