off-on
off-position
off-queue
off-road
off-set
offset
off-shift
off-sight
off-site
off-size
  off-state
off-station
off-sulphur
off-system
offtake
off-the-machine
off-the-shelf
off-tune
off-tuned
off-wire
OFL

    off-state voltage

    напряжение в закрытом состоянии