Mitch Haley wrote: > Fortunately, we can now do banks of FETs which can handle hundreds of amps > per > transistor, with resistance measured in milliohms.
Yep! Good times :) > For instance, here's an electric motor throttle rated to handle 1200A > continuous > at 12v, with .0005 ohm resistance across the transistors, and the whole > controller weighs 1.4oz, but it does not include a reverse function, but I > believe it had regenerative braking, and it costs $80. Just imagine what you > could do if you were willing to pay $300-500 for a large speed control to > operate an automobile. I call BS. 1200A requires HUGE HUGE wires. That controller is only really capable of 20-30 amps more likely. That peak current is probably for uS and is probably severely overstated as well. A 40kW motor only makes 53 horsepower... so that is probably a good starting size. 40kW is a LOT of juice. The higher voltage you can get the better. The ones in hybrids run at 300+ volts. Before we got our battery pack for ChallengeX we had a trailer full of lead acid batteries to emulate the 320V batter pack on the way. John _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
