posting this to the beginners section because i think i'm missing something basic..
so, we were messing around with the electronics of a car engine. the turbo pressure valve actuator got stuck in a position and the ecu refused to move it after barely trying
moving it manually was out of the question, we tried applying power to it
(SPOILER ALERT: at the end it got unstuck and all has gone back working as if nothing happened
)
one of the motor input at gnd and because we didn't want to blow something up, the other to the battery, thought a multimeter in amp mode.
BRYMEN 867s, 1kV 600 mA fuse for the mA range. didn't work. later i checked and the fuse blew open. I was actually expecting it but...
BRYMEN 867s, 1kV 11A fuse for the 10A range. didn't work either. the fuse is ok by the way and verified that the multimeter works in the Amp range
UNI-T UT33D, 200mA fuse, mA range. it worked. the motor moved. fuse didn't blow up. tried several times.
but why?