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Serum · 05.02.2007, 01:57 PM

You have any idea why capacitors are on controllers? not to protect the controller. They protect the batteries from the fast pulses the BL controller uses to spin the rotor.

Batteries will get a high internal resistance on pulse loads.. (on both discharge and charge) (throttle/brake) voltage will drop, batteries will get hot. They just can't deliver the juice on the high frequency the controller works on. Not talking about acceleration peaks but the switching frequency. Not to mention the pollution it will cause in the HF region..

Best way to protect the controller is to use trancil diodes on the motor side.

	(#50)
Serum RC-Monster Admin Offline Posts: 10,480 Join Date: Feb 2005	05.02.2007, 01:57 PM You have any idea why capacitors are on controllers? not to protect the controller. They protect the batteries from the fast pulses the BL controller uses to spin the rotor. Batteries will get a high internal resistance on pulse loads.. (on both discharge and charge) (throttle/brake) voltage will drop, batteries will get hot. They just can't deliver the juice on the high frequency the controller works on. Not talking about acceleration peaks but the switching frequency. Not to mention the pollution it will cause in the HF region.. Best way to protect the controller is to use trancil diodes on the motor side.