Originally posted by Soviet
WITH NO POWER TO THE FETS, THE CURRENT "GATES" ARE NOT OPEN !
THERE IS NO "BACKFEED" CURRENT.
SPEEDOS ARE ELECTONICALLY NOT DESIGNED TO ALLOW CURRENT FLOW WHEN INACTIVE.
AGAIN...FETS WITHOUT POWER ARE ELECTRICALLY INCAPABLE OF ALLOWING CURRENT FLOW.
Get a FET from Radioshack. Turn your multimeter to Ohm continuity test. Place + and _ leads on the FETS two legs. Zero current flow...not even high resistance...simply ZERO current flow.
A FET requires it's target design voltage delivered from the proper circuit before it is able to operate.
PURE
PLAIN
SIMPLE.
I understand, no power is going through the FETs but there is still power to portions of the board and current flow, very little but it is there. Ever left a charged battery connected to the esc, it will be drained in a day or two.
My point is that unless at least one power wire is disconnected there is still over 9 volts getting to portions of the esc. Simply switching off the esc will not totally protect it.