Comment on [Question] Metal Sign on Railroad Says "790Hz"
in_my_honest_opinion@piefed.social 5 days ago790hz is the switching signal, as the contacts corrode the resistance increases so they have to be tested on a schedule.
Comment on [Question] Metal Sign on Railroad Says "790Hz"
in_my_honest_opinion@piefed.social 5 days ago790hz is the switching signal, as the contacts corrode the resistance increases so they have to be tested on a schedule.