I was measuring the no load current of a Towerpro TP5330-9T. I was using a current/Voltage source. at 30V the motor didn't run smooth at startup so I added a capacitor. I thought it would help, but in fact after a few seconds the capacitor blew with a big bang. How come? I was using a cc hv110 controller.
ps: the numbers I obtained: resistance = 0.034 Ohm, no load current @ 12V = 1.2A, @ 22V = 1.6A, @30V = 1.8A