-- card: 48428 from stack: in -- bmap block id: 48907 -- flags: 0000 -- background id: 3551 -- name: -- part contents for background part 16 ----- text ----- 169 -- part contents for background part 3 ----- text ----- duty cycle -- part contents for background part 4 ----- text ----- The percentage of the time of a complete cycle of a pulse wave which it spends in the up-portion of it's cycle.